It's not actually as imprecise as it sounds. A 40W light bulb might produce 1W o...

klodolph on Feb 11, 2016 | parent | context | favorite | on: What 50,000 watts of RF energy sounds like through...

It's not actually as imprecise as it sounds. A 40W light bulb might produce 1W of light and 39W of heat. Watt is the normal unit of measure for radiant flux, and the lumen is nothing more than "luminous flux" which is radiant flux weighted according to its spectrum.