Hank explains absolute zero: -273.15 degrees Celsius - and the coldest place in the known universe may surprise you. A correction on our use of the phrase "degrees Kelvin" can be found in...
========== Absolute Zero is the holy grail of temperaturesBut even that we know exactly how cold that is-273.15 degrees celsiusReaching it has alluded us for centuries
and will continue to allude us probably foreverFor this frustration we have to thank Sir William Thomson, First Baron Kelvinwhen in the mid 1800 tested a new theory that heat is just molecules moving around in a substanceSo we wanted to get stuff as cold as he could get itSo he conducted experiments that drew heat from a warm substance toward a cooler oneand found that at some point all the kinetic energy could be drained from the warm substanceIt could no longer be cooled any furtherThis temperature wasn't like melting points or boiling points which change for every substanceIt was the same for everythingSo K...