What is measured in kgf cm2. Calculator for converting pressure in bar to MPa, kgf and psi. Why do you need a conversion calculator for pressure units

Quite often, when calculating water supply or heating parameters, it is necessary to convert bars to atm or atm to MPa, since various sources (reference books, technical literature, etc.) may indicate pressure values ​​in different units of measurement. For convenience, we present you a summary table for converting pressure measurement units:

Units

bar

mmHg.

mm water column

atm (physical)

kgf/m 2

kgf/cm 2
(technical
atm.)

Pa

kPa

MPa

1 bar 1 750,064 10197,16 0,986923 10,1972 ∙10 3 1,01972 10 5 100 0,1
1 mmHg 1,33322 ∙10 -3 1 13,5951 1,31579 ∙10 -3 13,5951 13,5951 ∙10 -3 133,322 133,322 ∙10 -3 133,32 ∙10 -6
1 mm water column 98,0665 ∙10 -6 73,5561 ∙10 -3 1 96,7841 ∙10 -6 1 0,1 ∙10 -3 9,80665 9,80665 ∙10 -3 9,8066 ∙10 -6
1 atm 1,01325 760 10,3323 ∙10 3 1 10,3323 ∙10 3 1,03323 101,325 ∙10 3 101,325 101,32 ∙10 -3
1 kgf/m 2 98,0665 ∙10 -6 73,5561 ∙10 -3 1 96,7841 ∙10 -6 1 0,1 ∙10 -3 9,80665 9,80665 ∙10 -3 9,8066 ∙10 -6
1 kgf/cm 2 0,980665 735,561 10000 0,967841 10000 1 98,0665 ∙10 3 98,0665 98,066 ∙10 -3
1 Pa 10 -5 7,50064∙10 -3 0,1019716 9,86923 ∙10 -6 101,972 ∙10 -3 10,1972 ∙10 -6 1 10 -3 10 -6
1 kPa 0,01 7,50064 101,9716 9,86923 ∙10 -3 101,972 10,1972 ∙10 -3 10 3 1 10 -3
1 MPa 10 7,50064 ∙10 3 101971,6 9,86923 101,972 ∙10 3 10,1972 10 6 10 3 1

The SI system includes:
Bar
1 bar = 0.1 MPa
1 bar = 10197.16 kgf/m2
1 bar = 10 N/cm2
Pa
1 Pa = 1000 MPa
1 MPa = 7500 mm. rt. Art.
1 MPa = 106 N/m2

Engineering units:
1 mmHg = 13.6 mm water column
1 mm water column = 0.0001kgf/cm2
1 mm water column = 1 kgf/m2
1 atm = 101.325 ∙ 103 Pa

Detailed list of pressure units:

  • 1 Pa (N/m 2) = 0.0000102 Atmosphere (metric)
  • 1 Pa (N/m 2) = 0.0000099 Standard atmosphere Atmosphere (standard) = Standard atmosphere
  • 1 Pa (N/m2) = 0.00001 Bar / Bar
  • 1 Pa (N/m 2) = 10 Barad / Barad
  • 1 Pa (N/m2) = 0.0007501 Centimeters Hg. Art. (0°C)
  • 1 Pa (N/m2) = 0.0101974 Centimeters in. Art. (4°C)
  • 1 Pa (N/m2) = 10 Dyne/square centimeter
  • 1 Pa (N/m2) = 0.0003346 Foot of water (4 °C)
  • 1 Pa (N/m2) = 10 -9 Gigapascals
  • 1 Pa (N/m2) = 0.01 Hectopascals
  • 1 Pa (N/m2) = 0.0002953 Dumov Hg. / Inch of mercury (0 °C)
  • 1 Pa (N/m2) = 0.0002961 InchHg. Art. / Inch of mercury (15.56 °C)
  • 1 Pa (N/m2) = 0.0040186 Dumov v.st. / Inch of water (15.56 °C)
  • 1 Pa (N/m 2) = 0.0040147 Dumov v.st. / Inch of water (4 °C)
  • 1 Pa (N/m 2) = 0.0000102 kgf/cm 2 / Kilogram force/centimetre 2
  • 1 Pa (N/m 2) = 0.0010197 kgf/dm 2 / Kilogram force/decimetre 2
  • 1 Pa (N/m2) = 0.101972 kgf/m2 / Kilogram force/meter 2
  • 1 Pa (N/m 2) = 10 -7 kgf/mm 2 / Kilogram force/millimeter 2
  • 1 Pa (N/m 2) = 10 -3 kPa
  • 1 Pa (N/m2) = 10 -7 Kilopound force/square inch
  • 1 Pa (N/m 2) = 10 -6 MPa
  • 1 Pa (N/m2) = 0.000102 Meters w.st. / Meter of water (4 °C)
  • 1 Pa (N/m2) = 10 Microbar / Microbar (barye, barrie)
  • 1 Pa (N/m2) = 7.50062 Microns Hg. / Micron of mercury (millitorr)
  • 1 Pa (N/m2) = 0.01 Millibar / Millibar
  • 1 Pa (N/m2) = 0.0075006 Millimeter of mercury (0 °C)
  • 1 Pa (N/m2) = 0.10207 Millimeters w.st. / Millimeter of water (15.56 °C)
  • 1 Pa (N/m2) = 0.10197 Millimeters w.st. / Millimeter of water (4 °C)
  • 1 Pa (N/m 2) = 7.5006 Millitorr / Millitorr
  • 1 Pa (N/m2) = 1N/m2 / Newton/square meter
  • 1 Pa (N/m2) = 32.1507 Daily ounces/sq. inch / Ounce force (avdp)/square inch
  • 1 Pa (N/m2) = 0.0208854 Pounds of force per square meter. ft / Pound force/square foot
  • 1 Pa (N/m2) = 0.000145 Pounds of force per square meter. inch / Pound force/square inch
  • 1 Pa (N/m2) = 0.671969 Poundals per sq. ft / Poundal/square foot
  • 1 Pa (N/m2) = 0.0046665 Poundals per sq. inch / Poundal/square inch
  • 1 Pa (N/m2) = 0.0000093 Long tons per square meter. ft / Ton (long)/foot 2
  • 1 Pa (N/m2) = 10 -7 Long tons per square meter. inch / Ton (long)/inch 2
  • 1 Pa (N/m2) = 0.0000104 Short tons per square meter. ft / Ton (short)/foot 2
  • 1 Pa (N/m2) = 10 -7 Tons per sq. inch / Ton/inch 2
  • 1 Pa (N/m2) = 0.0075006 Torr / Torr

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1 megapascal [MPa] = 10.1971621297793 kilogram-force per square meter. centimeter [kgf/cm²]

Initial value

Converted value

pascal exapascal petapascal terapascal gigapascal megapascal kilopascal hectopascal decapascal decipascal centipascal millipascal micropascal nanopascal picopascal femtopascal attopascal newton per square meter meter newton per square meter centimeter newton per square meter millimeter kilonewton per square meter meter bar millibar microbar dyne per sq. centimeter kilogram-force per square meter. meter kilogram-force per square meter centimeter kilogram-force per square meter. millimeter gram-force per square meter centimeter ton-force (kor.) per sq. ft ton-force (kor.) per sq. inch ton-force (long) per sq. ft ton-force (long) per sq. inch kilopound-force per sq. inch kilopound-force per sq. inch lbf per sq. ft lbf per sq. inch psi poundal per sq. foot torr centimeter of mercury (0°C) millimeter of mercury (0°C) inch of mercury (32°F) inch of mercury (60°F) centimeter of water. column (4°C) mm water. column (4°C) inch water. column (4°C) foot of water (4°C) inch of water (60°F) foot of water (60°F) technical atmosphere physical atmosphere decibar walls per square meter barium pieze (barium) Planck pressure seawater meter foot sea ​​water (at 15°C) meter of water. column (4°C)

More about pressure

General information

In physics, pressure is defined as the force acting on a unit surface area. If two equal forces act on one larger and one smaller surface, then the pressure on the smaller surface will be greater. Agree, it is much worse if someone who wears stilettos steps on your foot than someone who wears sneakers. For example, if you press the blade of a sharp knife onto a tomato or carrot, the vegetable will be cut in half. The surface area of ​​the blade in contact with the vegetable is small, so the pressure is high enough to cut that vegetable. If you press with the same force on a tomato or carrot with a dull knife, then most likely the vegetable will not cut, since the surface area of ​​the knife is now larger, which means the pressure is less.

In the SI system, pressure is measured in pascals, or newtons per square meter.

Relative pressure

Sometimes pressure is measured as the difference between absolute and atmospheric pressure. This pressure is called relative or gauge pressure and is what is measured, for example, when checking the pressure in car tires. Measuring instruments often, although not always, indicate relative pressure.

Atmosphere pressure

Atmospheric pressure is the air pressure at a given location. It usually refers to the pressure of a column of air per unit surface area. Changes in atmospheric pressure affect weather and air temperature. People and animals suffer from severe pressure changes. Low blood pressure causes problems of varying severity in humans and animals, from mental and physical discomfort to fatal diseases. For this reason, aircraft cabins are maintained above atmospheric pressure at a given altitude because the atmospheric pressure at cruising altitude is too low.

Atmospheric pressure decreases with altitude. People and animals living high in the mountains, such as the Himalayas, adapt to such conditions. Travelers, on the other hand, should take the necessary precautions to avoid getting sick due to the fact that the body is not used to such low pressure. Climbers, for example, can suffer from altitude sickness, which is associated with a lack of oxygen in the blood and oxygen starvation of the body. This disease is especially dangerous if you stay in the mountains for a long time. Exacerbation of altitude sickness leads to serious complications such as acute mountain sickness, high altitude pulmonary edema, high altitude cerebral edema and extreme mountain sickness. The danger of altitude and mountain sickness begins at an altitude of 2400 meters above sea level. To avoid altitude sickness, doctors advise not to use depressants such as alcohol and sleeping pills, drink plenty of fluids, and rise to altitude gradually, for example, on foot rather than by transport. It's also good to eat plenty of carbohydrates and get plenty of rest, especially if you're going uphill quickly. These measures will allow the body to get used to the oxygen deficiency caused by low atmospheric pressure. If you follow these recommendations, your body will be able to produce more red blood cells to transport oxygen to the brain and internal organs. To do this, the body will increase the pulse and breathing rate.

First medical aid in such cases is provided immediately. It is important to move the patient to a lower altitude where the atmospheric pressure is higher, preferably to an altitude lower than 2400 meters above sea level. Medicines and portable hyperbaric chambers are also used. These are lightweight, portable chambers that can be pressurized using a foot pump. A patient with altitude sickness is placed in a chamber in which the pressure corresponding to a lower altitude is maintained. Such a chamber is used only for providing first aid, after which the patient must be lowered below.

Some athletes use low pressure to improve circulation. Typically, this requires training to take place under normal conditions, and these athletes sleep in a low-pressure environment. Thus, their body gets used to high altitude conditions and begins to produce more red blood cells, which, in turn, increases the amount of oxygen in the blood, and allows them to achieve better results in sports. For this purpose, special tents are produced, the pressure in which is regulated. Some athletes even change the pressure in the entire bedroom, but sealing the bedroom is an expensive process.

Spacesuits

Pilots and astronauts have to work in low-pressure environments, so they wear spacesuits that compensate for the low pressure environment. Space suits completely protect a person from the environment. They are used in space. Altitude-compensation suits are used by pilots at high altitudes - they help the pilot breathe and counteract low barometric pressure.

Hydrostatic pressure

Hydrostatic pressure is the pressure of a fluid caused by gravity. This phenomenon plays a huge role not only in technology and physics, but also in medicine. For example, blood pressure is the hydrostatic pressure of blood on the walls of blood vessels. Blood pressure is the pressure in the arteries. It is represented by two values: systolic, or the highest pressure, and diastolic, or the lowest pressure during a heartbeat. Devices for measuring blood pressure are called sphygmomanometers or tonometers. The unit of blood pressure is millimeters of mercury.

The Pythagorean mug is an interesting vessel that uses hydrostatic pressure, and specifically the siphon principle. According to legend, Pythagoras invented this cup to control the amount of wine he drank. According to other sources, this cup was supposed to control the amount of water drunk during a drought. Inside the mug there is a curved U-shaped tube hidden under the dome. One end of the tube is longer and ends in a hole in the stem of the mug. The other, shorter end is connected by a hole to the inside bottom of the mug so that the water in the cup fills the tube. The principle of operation of the mug is similar to the operation of a modern toilet cistern. If the liquid level rises above the level of the tube, the liquid flows into the second half of the tube and flows out due to hydrostatic pressure. If the level, on the contrary, is lower, then you can safely use the mug.

Pressure in geology

Pressure is an important concept in geology. Without pressure, the formation of gemstones, both natural and artificial, is impossible. High pressure and high temperature are also necessary for the formation of oil from the remains of plants and animals. Unlike gems, which primarily form in rocks, oil forms at the bottom of rivers, lakes, or seas. Over time, more and more sand accumulates over these remains. The weight of water and sand presses on the remains of animal and plant organisms. Over time, this organic material sinks deeper and deeper into the earth, reaching several kilometers below the earth's surface. The temperature increases by 25 °C for every kilometer below the earth's surface, so at a depth of several kilometers the temperature reaches 50–80 °C. Depending on the temperature and temperature difference in the formation environment, natural gas may form instead of oil.

Natural gemstones

The formation of gemstones is not always the same, but pressure is one of the main components of this process. For example, diamonds are formed in the Earth's mantle, under conditions of high pressure and high temperature. During volcanic eruptions, diamonds move to the upper layers of the Earth's surface thanks to magma. Some diamonds fall to Earth from meteorites, and scientists believe they formed on planets similar to Earth.

Synthetic gemstones

The production of synthetic gemstones began in the 1950s and has been gaining popularity recently. Some buyers prefer natural gemstones, but artificial stones are becoming more and more popular due to their low price and lack of hassles associated with mining natural gemstones. Thus, many buyers choose synthetic gemstones because their extraction and sale is not associated with human rights violations, child labor and the financing of wars and armed conflicts.

One of the technologies for growing diamonds in laboratory conditions is the method of growing crystals at high pressure and high temperature. In special devices, carbon is heated to 1000 °C and subjected to pressure of about 5 gigapascals. Typically, a small diamond is used as the seed crystal, and graphite is used for the carbon base. From it a new diamond grows. This is the most common method of growing diamonds, especially as gemstones, due to its low cost. The properties of diamonds grown in this way are the same or better than those of natural stones. The quality of synthetic diamonds depends on the method used to grow them. Compared to natural diamonds, which are often clear, most man-made diamonds are colored.

Due to their hardness, diamonds are widely used in manufacturing. In addition, their high thermal conductivity, optical properties and resistance to alkalis and acids are valued. Cutting tools are often coated with diamond dust, which is also used in abrasives and materials. Most of the diamonds in production are of artificial origin due to the low price and because the demand for such diamonds exceeds the ability to mine them in nature.

Some companies offer services for creating memorial diamonds from the ashes of the deceased. To do this, after cremation, the ashes are refined until carbon is obtained, and then a diamond is grown from it. Manufacturers advertise these diamonds as mementos of the departed, and their services are popular, especially in countries with large percentages of wealthy citizens, such as the United States and Japan.

Method of growing crystals at high pressure and high temperature

The method of growing crystals under high pressure and high temperature is mainly used to synthesize diamonds, but recently this method has been used to improve natural diamonds or change their color. Various presses are used to artificially grow diamonds. The most expensive to maintain and the most complex of them is the cubic press. It is used primarily to enhance or change the color of natural diamonds. Diamonds grow in the press at a rate of approximately 0.5 carats per day.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question in TCTerms and within a few minutes you will receive an answer.

The car owner regularly has to service wheel tires - this is replacement and inflation. When buying a modern air pump, many motorists are confused by the strange “PSI” indicator. This is especially true for Chinese units. If you have a budget compressor at home, you can see that it says “300 PSI.” This is an alternative pressure indicator used in European countries.

In the photo there is a pneumatic pump - necessary when servicing rubber

The most common indicator for a driver from a CIS country is Atmospheres (Atm). In order not to make a mistake with tire inflation, you need to be able to convert PSI to atmospheres. Convenient tables and simple ratios help with this. As for PSI, this is an indicator of air pressure in the wheels; three letters hide the expression pounds per square inch - lbf/in². China indicates pressure in this way because it is suitable for most modern foreign cars.

Atm to PSI conversion explained; PSI to Bar; PSI in kg/cm²

A translation may not be required if the driver has a foreign car at his disposal - on the bodies of foreign cars, the pressure is indicated in PSI, the most common indicators for passenger cars are 29 and 35. However, “Russified” foreign cars that are produced in the CIS, come out with the “technical atmosphere” indicator. A striking example is Renault Logan or Kia Rio. The most convenient way is to convert to one indicator, which is 1 Bar (a unit of pressure and gravity):

  • If you convert 1 Bar to 1 Atmosphere, the figure will be approximately the same
  • When converting PSI to Bar, you get the following ratio: 1 Bar = 14 PSI
  • 1 Atmosphere equals 14 PSI

Video about optimal tire pressure

In the case when pressure is measured in Bar on pneumatic pumps, you need to remember that this indicator corresponds to the generally accepted Atmospheres in the CIS, and the minimum spread is not taken into account.

Conversion can be made from PSI to kg/cm²:

  • 1 pound equals 0.453 kilograms. This is not an exact figure, but for technical work it is suitable
  • 1 square inch is equal to 6.4516 cm²

Having these two indicators, you can find out how many kg/cm² are in PSI. Result: 1 PSI = 0.0702 kg/cm²

Accordingly, 20 PSI will be equal to 1.4 kg/cm²

These two indicators have a ratio: 7.03*10-2

An alternative indicator of tire pressure in Europe is PSI.

In order not to waste time calculating the proportion, you can use a simple table that shows the values ​​for the pressure in the tires of a car - here the driver will find various options for measuring pressure. There are also convenient unit calculators where you can also convert Bar to PSI. If you want to find out how many atmospheres there should be in a particular tire, you can perform an independent calculation, the reporting point will be 1 PSI = 0.07 Atm.

Sometimes it may be necessary to convert PSI to kg/cm² or vice versa. The calculation here will be more complicated, so it will be easier and more rational to use a ready-made table, which contains the main indicators for cars, bicycles, motorcycles and mopeds. Instead of Bar, you can substitute atmospheres - the indicator will not change. These ratios and the table should give a clear answer to the question: “how to convert PSI to Atm?”

Psi kPa kg/cm2 bar
20 138 1.4 1.4
21 145 1.5 1.4
22 152 1.5 1.5
23 159 1.6 1.6
24 165 1.7 1.7
25 172 1.8 1.7
25.5 176 1.8 1.8
26 179 1.8 1.8
26.5 183 1.9 1.8
27 186 1.9 1.9
27.5 190 1.9 1.9
28 193 2.0 1.9
28.5 197 2.0 2.0
29 200 2.0 2.0
29.5 203 2.1 2.0
30 207 2.1 2.1
30.5 210 2.1 2.1
31 214 2.2 2.1
31.5 217 2.2 2.2
32 221 2.2 2.2
32.5 224 2.3 2.2
33 228 2.3 2.3
33.5 231 2.4 2.3
34 234 2.4 2.3
34.5 238 2.4 2.4
35 241 2.5 2.4
35.5 245 2.5 2.4
36 248 2.5 2.5
36.5 252 2.6 2.5
37 255 2.6 2.6
37.5 259 2.6 2.6
38 262 2.7 2.6
38.5 265 2.7 2.7
39 269 2.7 2.7
39.5 272 2.8 2.7
40 276 2.8 2.8
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Length and distance converter Mass converter Converter of volume measures of bulk products and food products Area converter Converter of volume and units of measurement in culinary recipes Temperature converter Converter of pressure, mechanical stress, Young's modulus Converter of energy and work Converter of power Converter of force Converter of time Linear speed converter Flat angle Converter thermal efficiency and fuel efficiency Converter of numbers in various number systems Converter of units of measurement of quantity of information Currency rates Women's clothing and shoe sizes Men's clothing and shoe sizes Angular velocity and rotation frequency converter Acceleration converter Angular acceleration converter Density converter Specific volume converter Moment of inertia converter Moment of force converter Torque converter Specific heat of combustion converter (by mass) Energy density and specific heat of combustion converter (by volume) Temperature difference converter Coefficient of thermal expansion converter Thermal resistance converter Thermal conductivity converter Specific heat capacity converter Energy exposure and thermal radiation power converter Heat flux density converter Heat transfer coefficient converter Volume flow rate converter Mass flow rate converter Molar flow rate converter Mass flow density converter Molar concentration converter Mass concentration in solution converter Dynamic (absolute) viscosity converter Kinematic viscosity converter Surface tension converter Vapor permeability converter Water vapor flow density converter Sound level converter Microphone sensitivity converter Converter Sound Pressure Level (SPL) Sound Pressure Level Converter with Selectable Reference Pressure Luminance Converter Luminous Intensity Converter Illuminance Converter Computer Graphics Resolution Converter Frequency and Wavelength Converter Diopter Power and Focal Length Diopter Power and Lens Magnification (×) Converter electric charge Linear charge density converter Surface charge density converter Volume charge density converter Electric current converter Linear current density converter Surface current density converter Electric field strength converter Electrostatic potential and voltage converter Electrical resistance converter Electrical resistivity converter Electrical conductivity converter Electrical conductivity converter Electrical capacitance Inductance Converter American Wire Gauge Converter Levels in dBm (dBm or dBm), dBV (dBV), watts, etc. units Magnetomotive force converter Magnetic field strength converter Magnetic flux converter Magnetic induction converter Radiation. Ionizing radiation absorbed dose rate converter Radioactivity. Radioactive decay converter Radiation. Exposure dose converter Radiation. Absorbed dose converter Decimal prefix converter Data transfer Typography and image processing unit converter Timber volume unit converter Calculation of molar mass Periodic table of chemical elements by D. I. Mendeleev

1 megapascal [MPa] = 0.101971621297793 kilogram-force per square meter. millimeter [kgf/mm²]

Initial value

Converted value

pascal exapascal petapascal terapascal gigapascal megapascal kilopascal hectopascal decapascal decipascal centipascal millipascal micropascal nanopascal picopascal femtopascal attopascal newton per square meter meter newton per square meter centimeter newton per square meter millimeter kilonewton per square meter meter bar millibar microbar dyne per sq. centimeter kilogram-force per square meter. meter kilogram-force per square meter centimeter kilogram-force per square meter. millimeter gram-force per square meter centimeter ton-force (kor.) per sq. ft ton-force (kor.) per sq. inch ton-force (long) per sq. ft ton-force (long) per sq. inch kilopound-force per sq. inch kilopound-force per sq. inch lbf per sq. ft lbf per sq. inch psi poundal per sq. foot torr centimeter of mercury (0°C) millimeter of mercury (0°C) inch of mercury (32°F) inch of mercury (60°F) centimeter of water. column (4°C) mm water. column (4°C) inch water. column (4°C) foot of water (4°C) inch of water (60°F) foot of water (60°F) technical atmosphere physical atmosphere decibar walls per square meter barium pieze (barium) Planck pressure seawater meter foot sea ​​water (at 15°C) meter of water. column (4°C)

More about pressure

General information

In physics, pressure is defined as the force acting on a unit surface area. If two equal forces act on one larger and one smaller surface, then the pressure on the smaller surface will be greater. Agree, it is much worse if someone who wears stilettos steps on your foot than someone who wears sneakers. For example, if you press the blade of a sharp knife onto a tomato or carrot, the vegetable will be cut in half. The surface area of ​​the blade in contact with the vegetable is small, so the pressure is high enough to cut that vegetable. If you press with the same force on a tomato or carrot with a dull knife, then most likely the vegetable will not cut, since the surface area of ​​the knife is now larger, which means the pressure is less.

In the SI system, pressure is measured in pascals, or newtons per square meter.

Relative pressure

Sometimes pressure is measured as the difference between absolute and atmospheric pressure. This pressure is called relative or gauge pressure and is what is measured, for example, when checking the pressure in car tires. Measuring instruments often, although not always, indicate relative pressure.

Atmosphere pressure

Atmospheric pressure is the air pressure at a given location. It usually refers to the pressure of a column of air per unit surface area. Changes in atmospheric pressure affect weather and air temperature. People and animals suffer from severe pressure changes. Low blood pressure causes problems of varying severity in humans and animals, from mental and physical discomfort to fatal diseases. For this reason, aircraft cabins are maintained above atmospheric pressure at a given altitude because the atmospheric pressure at cruising altitude is too low.

Atmospheric pressure decreases with altitude. People and animals living high in the mountains, such as the Himalayas, adapt to such conditions. Travelers, on the other hand, should take the necessary precautions to avoid getting sick due to the fact that the body is not used to such low pressure. Climbers, for example, can suffer from altitude sickness, which is associated with a lack of oxygen in the blood and oxygen starvation of the body. This disease is especially dangerous if you stay in the mountains for a long time. Exacerbation of altitude sickness leads to serious complications such as acute mountain sickness, high altitude pulmonary edema, high altitude cerebral edema and extreme mountain sickness. The danger of altitude and mountain sickness begins at an altitude of 2400 meters above sea level. To avoid altitude sickness, doctors advise not to use depressants such as alcohol and sleeping pills, drink plenty of fluids, and rise to altitude gradually, for example, on foot rather than by transport. It's also good to eat plenty of carbohydrates and get plenty of rest, especially if you're going uphill quickly. These measures will allow the body to get used to the oxygen deficiency caused by low atmospheric pressure. If you follow these recommendations, your body will be able to produce more red blood cells to transport oxygen to the brain and internal organs. To do this, the body will increase the pulse and breathing rate.

First medical aid in such cases is provided immediately. It is important to move the patient to a lower altitude where the atmospheric pressure is higher, preferably to an altitude lower than 2400 meters above sea level. Medicines and portable hyperbaric chambers are also used. These are lightweight, portable chambers that can be pressurized using a foot pump. A patient with altitude sickness is placed in a chamber in which the pressure corresponding to a lower altitude is maintained. Such a chamber is used only for providing first aid, after which the patient must be lowered below.

Some athletes use low pressure to improve circulation. Typically, this requires training to take place under normal conditions, and these athletes sleep in a low-pressure environment. Thus, their body gets used to high altitude conditions and begins to produce more red blood cells, which, in turn, increases the amount of oxygen in the blood, and allows them to achieve better results in sports. For this purpose, special tents are produced, the pressure in which is regulated. Some athletes even change the pressure in the entire bedroom, but sealing the bedroom is an expensive process.

Spacesuits

Pilots and astronauts have to work in low-pressure environments, so they wear spacesuits that compensate for the low pressure environment. Space suits completely protect a person from the environment. They are used in space. Altitude-compensation suits are used by pilots at high altitudes - they help the pilot breathe and counteract low barometric pressure.

Hydrostatic pressure

Hydrostatic pressure is the pressure of a fluid caused by gravity. This phenomenon plays a huge role not only in technology and physics, but also in medicine. For example, blood pressure is the hydrostatic pressure of blood on the walls of blood vessels. Blood pressure is the pressure in the arteries. It is represented by two values: systolic, or the highest pressure, and diastolic, or the lowest pressure during a heartbeat. Devices for measuring blood pressure are called sphygmomanometers or tonometers. The unit of blood pressure is millimeters of mercury.

The Pythagorean mug is an interesting vessel that uses hydrostatic pressure, and specifically the siphon principle. According to legend, Pythagoras invented this cup to control the amount of wine he drank. According to other sources, this cup was supposed to control the amount of water drunk during a drought. Inside the mug there is a curved U-shaped tube hidden under the dome. One end of the tube is longer and ends in a hole in the stem of the mug. The other, shorter end is connected by a hole to the inside bottom of the mug so that the water in the cup fills the tube. The principle of operation of the mug is similar to the operation of a modern toilet cistern. If the liquid level rises above the level of the tube, the liquid flows into the second half of the tube and flows out due to hydrostatic pressure. If the level, on the contrary, is lower, then you can safely use the mug.

Pressure in geology

Pressure is an important concept in geology. Without pressure, the formation of gemstones, both natural and artificial, is impossible. High pressure and high temperature are also necessary for the formation of oil from the remains of plants and animals. Unlike gems, which primarily form in rocks, oil forms at the bottom of rivers, lakes, or seas. Over time, more and more sand accumulates over these remains. The weight of water and sand presses on the remains of animal and plant organisms. Over time, this organic material sinks deeper and deeper into the earth, reaching several kilometers below the earth's surface. The temperature increases by 25 °C for every kilometer below the earth's surface, so at a depth of several kilometers the temperature reaches 50–80 °C. Depending on the temperature and temperature difference in the formation environment, natural gas may form instead of oil.

Natural gemstones

The formation of gemstones is not always the same, but pressure is one of the main components of this process. For example, diamonds are formed in the Earth's mantle, under conditions of high pressure and high temperature. During volcanic eruptions, diamonds move to the upper layers of the Earth's surface thanks to magma. Some diamonds fall to Earth from meteorites, and scientists believe they formed on planets similar to Earth.

Synthetic gemstones

The production of synthetic gemstones began in the 1950s and has been gaining popularity recently. Some buyers prefer natural gemstones, but artificial stones are becoming more and more popular due to their low price and lack of hassles associated with mining natural gemstones. Thus, many buyers choose synthetic gemstones because their extraction and sale is not associated with human rights violations, child labor and the financing of wars and armed conflicts.

One of the technologies for growing diamonds in laboratory conditions is the method of growing crystals at high pressure and high temperature. In special devices, carbon is heated to 1000 °C and subjected to pressure of about 5 gigapascals. Typically, a small diamond is used as the seed crystal, and graphite is used for the carbon base. From it a new diamond grows. This is the most common method of growing diamonds, especially as gemstones, due to its low cost. The properties of diamonds grown in this way are the same or better than those of natural stones. The quality of synthetic diamonds depends on the method used to grow them. Compared to natural diamonds, which are often clear, most man-made diamonds are colored.

Due to their hardness, diamonds are widely used in manufacturing. In addition, their high thermal conductivity, optical properties and resistance to alkalis and acids are valued. Cutting tools are often coated with diamond dust, which is also used in abrasives and materials. Most of the diamonds in production are of artificial origin due to the low price and because the demand for such diamonds exceeds the ability to mine them in nature.

Some companies offer services for creating memorial diamonds from the ashes of the deceased. To do this, after cremation, the ashes are refined until carbon is obtained, and then a diamond is grown from it. Manufacturers advertise these diamonds as mementos of the departed, and their services are popular, especially in countries with large percentages of wealthy citizens, such as the United States and Japan.

Method of growing crystals at high pressure and high temperature

The method of growing crystals under high pressure and high temperature is mainly used to synthesize diamonds, but recently this method has been used to improve natural diamonds or change their color. Various presses are used to artificially grow diamonds. The most expensive to maintain and the most complex of them is the cubic press. It is used primarily to enhance or change the color of natural diamonds. Diamonds grow in the press at a rate of approximately 0.5 carats per day.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question in TCTerms and within a few minutes you will receive an answer.

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1 pascal [Pa] = 1.01971621297793E-07 kilogram-force per square meter. millimeter [kgf/mm²]

Initial value

Converted value

pascal exapascal petapascal terapascal gigapascal megapascal kilopascal hectopascal decapascal decipascal centipascal millipascal micropascal nanopascal picopascal femtopascal attopascal newton per square meter meter newton per square meter centimeter newton per square meter millimeter kilonewton per square meter meter bar millibar microbar dyne per sq. centimeter kilogram-force per square meter. meter kilogram-force per square meter centimeter kilogram-force per square meter. millimeter gram-force per square meter centimeter ton-force (kor.) per sq. ft ton-force (kor.) per sq. inch ton-force (long) per sq. ft ton-force (long) per sq. inch kilopound-force per sq. inch kilopound-force per sq. inch lbf per sq. ft lbf per sq. inch psi poundal per sq. foot torr centimeter of mercury (0°C) millimeter of mercury (0°C) inch of mercury (32°F) inch of mercury (60°F) centimeter of water. column (4°C) mm water. column (4°C) inch water. column (4°C) foot of water (4°C) inch of water (60°F) foot of water (60°F) technical atmosphere physical atmosphere decibar walls per square meter barium pieze (barium) Planck pressure seawater meter foot sea ​​water (at 15°C) meter of water. column (4°C)

More about pressure

General information

In physics, pressure is defined as the force acting on a unit surface area. If two equal forces act on one larger and one smaller surface, then the pressure on the smaller surface will be greater. Agree, it is much worse if someone who wears stilettos steps on your foot than someone who wears sneakers. For example, if you press the blade of a sharp knife onto a tomato or carrot, the vegetable will be cut in half. The surface area of ​​the blade in contact with the vegetable is small, so the pressure is high enough to cut that vegetable. If you press with the same force on a tomato or carrot with a dull knife, then most likely the vegetable will not cut, since the surface area of ​​the knife is now larger, which means the pressure is less.

In the SI system, pressure is measured in pascals, or newtons per square meter.

Relative pressure

Sometimes pressure is measured as the difference between absolute and atmospheric pressure. This pressure is called relative or gauge pressure and is what is measured, for example, when checking the pressure in car tires. Measuring instruments often, although not always, indicate relative pressure.

Atmosphere pressure

Atmospheric pressure is the air pressure at a given location. It usually refers to the pressure of a column of air per unit surface area. Changes in atmospheric pressure affect weather and air temperature. People and animals suffer from severe pressure changes. Low blood pressure causes problems of varying severity in humans and animals, from mental and physical discomfort to fatal diseases. For this reason, aircraft cabins are maintained above atmospheric pressure at a given altitude because the atmospheric pressure at cruising altitude is too low.

Atmospheric pressure decreases with altitude. People and animals living high in the mountains, such as the Himalayas, adapt to such conditions. Travelers, on the other hand, should take the necessary precautions to avoid getting sick due to the fact that the body is not used to such low pressure. Climbers, for example, can suffer from altitude sickness, which is associated with a lack of oxygen in the blood and oxygen starvation of the body. This disease is especially dangerous if you stay in the mountains for a long time. Exacerbation of altitude sickness leads to serious complications such as acute mountain sickness, high altitude pulmonary edema, high altitude cerebral edema and extreme mountain sickness. The danger of altitude and mountain sickness begins at an altitude of 2400 meters above sea level. To avoid altitude sickness, doctors advise not to use depressants such as alcohol and sleeping pills, drink plenty of fluids, and rise to altitude gradually, for example, on foot rather than by transport. It's also good to eat plenty of carbohydrates and get plenty of rest, especially if you're going uphill quickly. These measures will allow the body to get used to the oxygen deficiency caused by low atmospheric pressure. If you follow these recommendations, your body will be able to produce more red blood cells to transport oxygen to the brain and internal organs. To do this, the body will increase the pulse and breathing rate.

First medical aid in such cases is provided immediately. It is important to move the patient to a lower altitude where the atmospheric pressure is higher, preferably to an altitude lower than 2400 meters above sea level. Medicines and portable hyperbaric chambers are also used. These are lightweight, portable chambers that can be pressurized using a foot pump. A patient with altitude sickness is placed in a chamber in which the pressure corresponding to a lower altitude is maintained. Such a chamber is used only for providing first aid, after which the patient must be lowered below.

Some athletes use low pressure to improve circulation. Typically, this requires training to take place under normal conditions, and these athletes sleep in a low-pressure environment. Thus, their body gets used to high altitude conditions and begins to produce more red blood cells, which, in turn, increases the amount of oxygen in the blood, and allows them to achieve better results in sports. For this purpose, special tents are produced, the pressure in which is regulated. Some athletes even change the pressure in the entire bedroom, but sealing the bedroom is an expensive process.

Spacesuits

Pilots and astronauts have to work in low-pressure environments, so they wear spacesuits that compensate for the low pressure environment. Space suits completely protect a person from the environment. They are used in space. Altitude-compensation suits are used by pilots at high altitudes - they help the pilot breathe and counteract low barometric pressure.

Hydrostatic pressure

Hydrostatic pressure is the pressure of a fluid caused by gravity. This phenomenon plays a huge role not only in technology and physics, but also in medicine. For example, blood pressure is the hydrostatic pressure of blood on the walls of blood vessels. Blood pressure is the pressure in the arteries. It is represented by two values: systolic, or the highest pressure, and diastolic, or the lowest pressure during a heartbeat. Devices for measuring blood pressure are called sphygmomanometers or tonometers. The unit of blood pressure is millimeters of mercury.

The Pythagorean mug is an interesting vessel that uses hydrostatic pressure, and specifically the siphon principle. According to legend, Pythagoras invented this cup to control the amount of wine he drank. According to other sources, this cup was supposed to control the amount of water drunk during a drought. Inside the mug there is a curved U-shaped tube hidden under the dome. One end of the tube is longer and ends in a hole in the stem of the mug. The other, shorter end is connected by a hole to the inside bottom of the mug so that the water in the cup fills the tube. The principle of operation of the mug is similar to the operation of a modern toilet cistern. If the liquid level rises above the level of the tube, the liquid flows into the second half of the tube and flows out due to hydrostatic pressure. If the level, on the contrary, is lower, then you can safely use the mug.

Pressure in geology

Pressure is an important concept in geology. Without pressure, the formation of gemstones, both natural and artificial, is impossible. High pressure and high temperature are also necessary for the formation of oil from the remains of plants and animals. Unlike gems, which primarily form in rocks, oil forms at the bottom of rivers, lakes, or seas. Over time, more and more sand accumulates over these remains. The weight of water and sand presses on the remains of animal and plant organisms. Over time, this organic material sinks deeper and deeper into the earth, reaching several kilometers below the earth's surface. The temperature increases by 25 °C for every kilometer below the earth's surface, so at a depth of several kilometers the temperature reaches 50–80 °C. Depending on the temperature and temperature difference in the formation environment, natural gas may form instead of oil.

Natural gemstones

The formation of gemstones is not always the same, but pressure is one of the main components of this process. For example, diamonds are formed in the Earth's mantle, under conditions of high pressure and high temperature. During volcanic eruptions, diamonds move to the upper layers of the Earth's surface thanks to magma. Some diamonds fall to Earth from meteorites, and scientists believe they formed on planets similar to Earth.

Synthetic gemstones

The production of synthetic gemstones began in the 1950s and has been gaining popularity recently. Some buyers prefer natural gemstones, but artificial stones are becoming more and more popular due to their low price and lack of hassles associated with mining natural gemstones. Thus, many buyers choose synthetic gemstones because their extraction and sale is not associated with human rights violations, child labor and the financing of wars and armed conflicts.

One of the technologies for growing diamonds in laboratory conditions is the method of growing crystals at high pressure and high temperature. In special devices, carbon is heated to 1000 °C and subjected to pressure of about 5 gigapascals. Typically, a small diamond is used as the seed crystal, and graphite is used for the carbon base. From it a new diamond grows. This is the most common method of growing diamonds, especially as gemstones, due to its low cost. The properties of diamonds grown in this way are the same or better than those of natural stones. The quality of synthetic diamonds depends on the method used to grow them. Compared to natural diamonds, which are often clear, most man-made diamonds are colored.

Due to their hardness, diamonds are widely used in manufacturing. In addition, their high thermal conductivity, optical properties and resistance to alkalis and acids are valued. Cutting tools are often coated with diamond dust, which is also used in abrasives and materials. Most of the diamonds in production are of artificial origin due to the low price and because the demand for such diamonds exceeds the ability to mine them in nature.

Some companies offer services for creating memorial diamonds from the ashes of the deceased. To do this, after cremation, the ashes are refined until carbon is obtained, and then a diamond is grown from it. Manufacturers advertise these diamonds as mementos of the departed, and their services are popular, especially in countries with large percentages of wealthy citizens, such as the United States and Japan.

Method of growing crystals at high pressure and high temperature

The method of growing crystals under high pressure and high temperature is mainly used to synthesize diamonds, but recently this method has been used to improve natural diamonds or change their color. Various presses are used to artificially grow diamonds. The most expensive to maintain and the most complex of them is the cubic press. It is used primarily to enhance or change the color of natural diamonds. Diamonds grow in the press at a rate of approximately 0.5 carats per day.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question in TCTerms and within a few minutes you will receive an answer.