A word of caution if you’re planning to try this cryocooler method for making liquid nitrogen: not only does it involve toxic and flammable gasses and pressures high enough to turn the works into a ...

THAT Regnault made a number of experiments similar to some of those described by Joule and Kelvin in their papers on the thermal effects of fluids in motion does not seem to be commonly known; at all ...

Anyone who's taken a hands-on course in electric circuits knows that resistors warm when conducting current. The amount of heat is proportional to the product of the resistance and the square of the ...