Radiation through a vacuum

by Keith Hamburger

It's a beautiful day and you're outside enjoying the warm sunshine. A few minutes later a cloud moves over the sun and you feel a chill. After the cloud moves on you warm up again and continue enjoying your day. It's ...read more

by Steve Lussing

It is wrong to think of space as being completely devoid of anything. The noted Italian astronomer Paolo Maffei has suggested that the density of matter in the deepest regions of space between the galaxies is in the order...read more

by Brent

I began my work by finding the equation for heat lost through radiation. After some searching, I discovered that the equation was Q/t=eA(Ts^4-Tsur^4), where e is the emissivity constant of the radiating object, is the Ste...read more