Orders of magnitude (pressure)

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Orders of magnitude
area
angular velocity
charge
currency
data
density
energy
frequency
length
magnetic flux density
mass
numbers
power
pressure
specific energy density
specific heat capacity
speed
temperature
time
volume
Conversion of units
physical unit
SI
SI base unit
SI derived unit
SI prefix
Planck units


Magnitude Pressure Item
10-15 Pa 1 fPa Interstellar space pressure (approximate)
10-9 Pa 1 nPa Atmospheric pressure on the Moon (approximate)
10-6 Pa 1 µPa Pressure inside a vacuum tube (approximate, varies). Reference pressure for sound in water.
20 µPa Threshold of human hearing - the smallest RMS pressure fluctuation that the human ear can hear in a noiseless environment, at frequencies between 1 kHz and 5 kHz.

Reference pressure for sound in air.
100 µPa Near earth outer space pressure (approximate)
10-3 Pa 0.5 Pa Atmospheric pressure on Pluto (1988 figure; very roughly)
1 Pa 1 Pa Pressure exerted by a UK five pound note resting on a surface [1]
10 Pa Pressure increase per millimeter of a water column1
10 Pa Pressure inside an incandescent light bulb (approximate)
100 Pa Threshold of pain. Sounds above this amplitude are unbearable and can cause ear pain. Prolonged exposure may lead to hearing loss.
103 Pa 1 kPa Atmospheric pressure on Mars, 1 % of atmospheric sea-level pressure on Earth
10 kPa Pressure increase per meter of a water column1, or the drop in air pressure when going from earth sea level to 1000 m elevation
101.325 kPa Standard atmospheric pressure (1 bar) for earth sea level
180 to 250 kPa Pressure in an automobile tire
106 Pa 0.8 to 2 MPa Pressure used in boilers of steam locomotives
9 MPa Atmospheric pressure on Venus (90 bar)
10 MPa Pressure washers force out water at this pressure
12 MPa Pressure exerted by a 60kg woman wearing stilettos
20 MPa Pressure of a typical aluminium scuba tank (200 bar)
100 MPa Pressure at bottom of Mariana Trench, about 10 km below ocean surface (1000 bar)
400 MPa Chamber pressure of .50 BMG weapon discharge
109 Pa 9 GPa Pressure at which octaoxygen forms [2] (90000 bar)
10 GPa Pressure at which diamond forms[citation needed]
96 GPa Pressure at which metallic oxygen forms[3] (960000 bar)
100 GPa Theoretical tensile strength of a carbon nanotube (CNT)
380 GPa Pressure inside the core of the Earth (3.8 million bar)
1012 Pa 530 TPa Pressure inside an Ivy Mike-like nuclear bomb (5.3 billion bar)
1015 Pa 6.4 PPa Pressure inside a W80 warhead detonation (64 billion bar)
25 PPa Pressure inside the core of the Sun.[4] (250 billion bar)
10111 Pa 4.63 × 10113 Pa The Planck pressure

1 At earth mean sea level.

[edit] Citations

  1. ^ "Microbe experiment suggests we could all be Martians", The Guardian 2007-01-13, accessed 2008-03-23
  2. ^ Fujihisa et al. (2006)
  3. ^ azonano.com 2008
  4. ^ Williams, David R. (September 1, 2004). Sun Fact Sheet. NASA. Retrieved on 2008-01-23.

[edit] References