Examples
| pressure (Pa) | pressure (Torr) | mean free path | molecules per cm3 | |
|---|---|---|---|---|
| Standard atmosphere, for comparison | 101.325 kPa | 760 | 66 nm | 2.5×1019 |
| Vacuum cleaner | approximately 80 kPa | 600 | 70 nm | 1019 |
| liquid ring vacuum pump | approximately 3.2 kPa | 24 | 1.75 μm | 1018 |
| Mars atmosphere | 1.155 kPa to 0.03 kPa (mean 0.6 kPa) | 8.66 to 0.23 | ||
| freeze drying | 100 to 10 Pa | 1 to 0.1 | 100 μm to 1 mm | 1016 to 1015 |
| rotary vane pump | 100 Pa to 100 mPa | 1 to 10−3 | 100 μm to 10 cm | 1016 to 1013 |
| Incandescent light bulb | 10 to 1 Pa | 0.1 to 0.01 | 1 mm to 1 cm | 1015 to 1014 |
| Thermos bottle | 1 to 0.01 Pa | 10−2 to 10−4 | 1 cm to 1 m | 1014 to 1012 |
| Earth thermosphere | 1 Pa to 100 nPa | 10−2 to 10−9 | 1 cm to 100 km | 1014 to 107 |
| Vacuum tube | 10 µPa to 10 nPa | 10−7 to 10−10 | 1 to 1,000 km | 109 to 106 |
| Cryopumped MBE chamber | 100 nPa to 1 nPa | 10−9 to 10−11 | 100 to 10,000 km | 107 to 105 |
| Pressure on the Moon | approximately 1 nPa | 10−11 | 10,000 km | 4×105 |
| Interplanetary space | 10 | |||
| Interstellar space | 1 | |||
| Intergalactic space | 10−6 |
Read more about this topic: Vacuum
Famous quotes containing the word examples:
“Histories are more full of examples of the fidelity of dogs than of friends.”
—Alexander Pope (1688–1744)
“No rules exist, and examples are simply life-savers answering the appeals of rules making vain attempts to exist.”
—André Breton (1896–1966)
“There are many examples of women that have excelled in learning, and even in war, but this is no reason we should bring ‘em all up to Latin and Greek or else military discipline, instead of needle-work and housewifry.”
—Bernard Mandeville (1670–1733)