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Pressure

Среда, 14 Марта 2012 г. 01:28 + в цитатник


 

This is a tabulated listing of the orders of magnitude in relation to pressure expressed in pascals.

Magnitude

Pressure

lbf/in2 or dB

Item

10−17 Pa


 

10 aPa

 

Pressure in outer space in intergalactic voids (the lowest pressure ever measured)[1][2]

10−15 Pa


 

1-10 fPa

 

Pressure in outer space between stars in the Milky Way[1][3]

10−12 Pa


 

1 pPa

 

Lowest pressure obtained in laboratory conditions[4]

10−11 Pa


 

 

40 pPa

 

Atmosphere of the Moon at lunar day,[5][6] very approximately (4×10−11 Pa)[citation needed]

10−10 Pa


 

100 pPa

 

Atmosphere of Mercury, very approximately (1×10−10 Pa)[7]

800 pPa

 

Atmosphere of the Moon at lunar night,[5][6] very approximately (80×10−11 Pa)[citation needed]

10−9 Pa


 

< 1 nPa

 

Vacuum expected in the beam pipe of the Large Hadron Collider's Atlas experiment[8]

~1 nPa

 

Approximate solar wind pressure at Earth's distance from the Sun[9] (variable)[citation needed]

10−8 Pa


 

10 nPa

 

Pressure inside a vacuum chamber for laser cooling of atoms (magneto-optical trap)[citation needed]

10-700 nPa

 

Atmospheric pressure in low Earth orbit[10][11]

10−7 Pa


 

100 nPa

 

Upper limit of ultra high vacuum[12][13]

10−6 Pa


 

1 µPa

 

Reference pressure for sound in water[14]

1 µPa

 

Pressure inside a vacuum tube (very approximate)[citation needed]

10−5 Pa


 

10 µPa

 

Radiation pressure of sunlight on a perfectly reflecting surface at the distance of the Earth.[15]

20 µPa

0 dB

Reference pressure for sound in air[16]

±20 µPa

0 dB

Threshold of human hearing[16]

10−4 Pa


 

     

10−3 Pa


 

1-100 mPa

 

Vacuum pressures used for molecular distillation[17]

10−2 Pa


 

     

10−1 Pa


 

100 mPa

 

Upper limit of high vacuum[12][18]

~200 mPa

 

Atmospheric pressure on Pluto (1988 figure; very roughly)[19]

1 Pa


 

1 Pa

 

Pressure exerted by a US dollar bill resting flat on a surface[20]

1 Pa

 

Upper limit of molecular distillation, where the mean free path of molecules is larger than the equipment[citation needed]

10 Pa


 

10 Pa

 

Pressure increase per millimeter of a water column at Earth mean sea level[21]

10 Pa

 

Pressure due to direct impact of a gentle breeze (~9 mph)[22][23][24]

86 Pa

 

Pressure from the weight of a U.S. penny lying flat[25]

102 Pa


 

±100 Pa

~130 dB

Threshold of pain pressure level for sound. Prolonged exposure may lead to hearing loss.[citation needed]

100 Pa

 

Pressure due to direct impact of a strong breeze (~28 mph)[22][23][26]

120 Pa

 

Pressure from the weight of a U.S. quarter lying flat[27][28]

133 Pa

 

1 torr ≈ 1 mmHg[29].

±300 Pa

±0.043 psi

Lung air pressure difference moving the normal breaths of a person (only 0.3% of standard atmospheric pressure)[30][31]

400 to 900 Pa

0.06 to 0.13 psi

Atmospheric pressure on Mars, < 1% of atmospheric sea-level pressure on Earth[32]

610 Pa

0.089 psi

Partial vapour pressure at the triple point of water (611.73 Pa)[33]

103 Pa


 

+1-10 kPa

 

Typical explosion peak overpressure needed to break glass windows (approximate)[34]

2 kPa

 

Pressure of popping popcorn (very approximate)[35][36]

2.6 kPa

0.38 psi

Pressure to make water boil at room temperature (22 °C) (20 mmHg)[37]

5 kPa

0.8 psi

Blood pressure fluctuation (40 mmHg) between heartbeats for a typical healthy adult[38][39]

6.9 kPa

1 psi

1 pound-force per square inch[29]

+9.8 kPa

+1.4 psi

Lung pressure that a typical person can exert (74 mmHg)[40]

104 Pa


 

10 kPa

1.5 psi

Pressure increase per meter of a water column[21]

10 kPa

1.5 psi

Decrease in air pressure when going from Earth sea level to 1000 m elevation[citation needed]

+13 kPa

+1.9 psi

High air pressure for human lung, measured for trumpet player making staccato high notes[41]

< +16 kPa

+2.3 psi

Systolic blood pressure in a healthy adult while at rest (< 120 mmHg) (gauge pressure)[38]

+19.3 kPa

+2.8 psi

High end of lung pressure, exertable without injury by a healthy person for brief times[citation needed]

+34 kPa

+5 psi

Level of long-duration blast overpressure (from a large-scale explosion) that would cause most buildings to collapse[42]

+70 kPa

+10 psi

Pressure for paint exiting an HVLP (low-pressure) paint spray gun[43]

70 kPa

 

Pressure inside an incandescent light bulb[44]

80 kPa

12 psi

Pressure inside vacuum cleaner at sea level on Earth (80% of standard atmospheric pressure)[citation needed]

87 kPa

13 psi

Record low atmospheric pressure for typhoon/hurricane (Typhoon Tip in 1979) (only 86% of standard atmospheric pressure)[45]

105 Pa


 

100 kPa

15 psi

1 bar (14.5 psi)[46], approximately equal to the weight of one kilogram (1 kilopond) acting on one square centimeter[29]

101 kPa


 

15 psi

Standard atmospheric pressure for Earth sea level (14.7 psi)[29]

150 to > 550 kPa

25 to > 80 psi

Impact pressure of a fist punch (approximate)[citation needed][47]

+180 to +250 kPa

+26 to +36 psi

Air pressure in an automobile tire relative to atmosphere (gauge pressure)[citation needed]

+200 to +1,500 kPa

+30 to +220 psi

Air pressure in a bicycle tire relative to atmosphere (gauge pressure)[citation needed]

300 kPa

50 psi

Water pressure of a garden hose[48]

300 to 700 kPa

50 to 100 psi

Typical water pressure of a municipal water supply in the US[49]

400 to 600 kPa

60 to 90 psi

Air pressure in a champagne bottle[50]

520 kPa

75 psi

Partial vapour pressure at the triple point of carbon dioxide[51]

+690 to +830 kPa

+100 to +120 psi

Air pressure in a heavy truck/bus tire relative to atmosphere (gauge pressure)[citation needed]

800 kPa

 

Vapor pressure of water in a kernel of popcorn when the kernel ruptures[52]

106 Pa


 

0.8 to 2 MPa

120 to 290 psi

Pressure used in boilers of steam locomotives[citation needed]

2.8 to 8.3 MPa

400 to 1200 psi

Pressure of carbon dioxide propellant in a paintball gun[53]

5 MPa

700 psi

Water pressure of the output of a coin-operated car wash spray nozzle[48]

5 MPa

700 psi

Military submarine max. rated pressure (est.) of Seawolf class nuclear sub, at depth of 500 m[54][55]

6.9-27 MPa

1000-4000 psi

Water spray pressure used by pressure washers[56]

9.2 MPa

1300 psi

Atmosphere of Venus (92 bar)[57]

107 Pa


 

> 10 MPa

> 1500 psi

Pressure exerted by a 45-kg woman wearing stiletto heels when a heel hits the floor[58]

15 MPa

2200 psi

Power stroke maximum pressure in diesel truck engine when burning fuel[citation needed]

21 MPa

3000 psi

Pressure of a typical aluminium scuba tank of pressurized air (210 bar)[59]

20 MPa

2900 psi

Typical pressure used for hydrogenolysis reactions[60]

69 MPa

10000 psi

Water pressure withstood by the DSV Shinkai 6500 in visiting ocean depths of > 6500 meters[61]

70 to 280 MPa

10000 to 40000 psi

Maximum chamber pressure during a pistol firing[62]

108 Pa


 

110 MPa

16000 psi

Pressure at bottom of Mariana Trench, about 11 km below ocean surface (1100 bar)[63]

100 to 300 MPa

15000 to 44000 psi

Pressure inside reactor for the synthesis of high-pressure polyethylene (HPPE)[64]

400 MPa

58000 psi

Chamber pressure of late 1910s .50 Browning Machine Gun discharge[citation needed]

240 to 620 MPa

35000 to 90000 psi

Water pressure used in a water jet cutter[65]

109 Pa


 

1 GPa

 

Extremely high-pressure chemical reactors (10 kbar)[citation needed]

1010 Pa


 

10 GPa

 

Pressure at which octaoxygen forms at room temperature (100,000 bar)[66]

18 GPa

 

Pressure needed for the first commercially successful synthesis of diamond[citation needed]

24 to 110 GPa

 

Stability range of enstatite in its perovskite-structured polymorph, possibly the most common mineral inside the Earth[citation needed]

40 GPa

 

Quantum mechanical electron degeneracy pressure in a block of copper[67]

96 GPa

 

Pressure at which metallic oxygen forms (960,000 bar)[66]

1011 Pa


 

100 GPa

 

Theoretical tensile strength of a carbon nanotube (CNT)[citation needed]

130 GPa

 

Intrinsic strength of monolayer graphene[68]

> 300 GPa

 

Pressure attainable with a diamond anvil cell[69]

360 GPa

 

Pressure inside the core of the Earth (3.64 million bar)[70][71]

1012 Pa


 

     

1013 Pa


 

     

1014 Pa


 

540 TPa

 

Pressure inside an Ivy Mike-like nuclear bomb detonation (5.3 billion bar)[72][73]

1015 Pa


 

6.5 PPa

 

Pressure inside a W80 nuclear warhead detonation (64 billion bar)[72][74]

1016 Pa


 

25 PPa

 

Pressure inside the core of the Sun (250 billion bar)[75]

57 PPa

 

Pressure inside a uranium nucleus (8 MeV in a sphere of radius 175 pm)[76]

1034 Pa

0.3 to 16×1034 Pa

 

Pressure range inside a neutron star[77]

10113 Pa

4.6×10113 Pa

6.7×10109 psi

The Planck pressure (4.63x10108 bar), not reached except shortly after the Big Bang or in a black hole



 


 


 

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