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Mar
3
answered “Dear radioactive ladies and gentlemen” - Letter by Wolfgang Pauli
Feb
29
revised In a Sterling Engine, does heat from the hot side transfer to the cold side?
added 6 characters in body
Feb
29
answered Is there a readily available (or at least not theoretical) material that reflects only infrared light?
Feb
29
comment In-flight damage to a supersonic jet
An interesting point is the speed you lose consciousness at very high altitudes. The oxygen partial pressure in your lungs is so low that your lungs essentially 'pump' oxygen OUT of your blood stream.
Feb
29
comment In-flight damage to a supersonic jet
@datenwolf - positive pressure masks are a little different though from the normal aircraft masks. I thought SR71/U2 had a ceiling of around 120,000ft but apparently it's 'only' 90,000 so their pressure suits are mostly for temperature and speed.
Feb
29
answered In a Sterling Engine, does heat from the hot side transfer to the cold side?
Feb
28
revised In-flight damage to a supersonic jet
added 336 characters in body
Feb
28
revised What happens when a supersonic airplane flies through a cloud?
deleted 3 characters in body
Feb
27
answered In-flight damage to a supersonic jet
Feb
27
answered What happens when a supersonic airplane flies through a cloud?
Feb
27
comment Example in the book: A simple accelerometer
There is a force, remember f = ma ?
Feb
25
answered Curved lines in a picture (Photography)
Feb
23
answered Does sending data down a fiber optic cable take longer if the cable is bent?
Feb
22
answered Long-Life High Altitude Balloon
Feb
21
answered Some questions about car radio and cellphone antennas
Feb
17
revised Shielding magnetic field without mu-metal
added 210 characters in body
Feb
17
answered Shielding magnetic field without mu-metal
Feb
13
revised Why is the optimum wheel size of a bicycle about the same as that of a car?
added 279 characters in body
Feb
13
answered Why is the optimum wheel size of a bicycle about the same as that of a car?
Feb
12
answered Atmospheric pressure inside a rigid vessel