If you haven’t seen it- this entry below addresses the semantics issue, which is the bulk of the problem of cold radiation.
https://physics.stackexchange.com/questions/193054/thermodynamics-possibility-of-cold-radiation A related and possibly more interesting problem is that of “cold electricity” which supposedly is a concept which goes back to Tesla (the guy not the car). Indeed “cold electricity” can be identified with hole carriers instead of electrons … but this is not the same as cold radiation (unless you want to define it that way)/ But if it is real, then maybe cold electricity should be called “holicity” 😊 From: Bob Higgins Could the "cold radiation" be considered something like hole carriers in a semiconductor? On Wed, Oct 14, 2020 at 1:29 PM H LV <hveeder...@gmail.com> wrote: In my estimation Rumford's theory is the seed of an alternate theory of radiation. It could still grow and blossom into a well developed mathematical theory of heat. I am interested in beat theory because it resonants (pun intended) with Rumford`s theory of hot and cold radiation, since both involve _differences_. A beat frequency is given by the difference of two frequencies and in Rumford`s theory two types of differences are important.The first is that the relative difference in temperature between two bodies determines which body is producing more hot or more cold radiation. The second is that the sign and magnitude of the difference between the received frequency and the oscillator's frequency determines whether the radiation increases or decreases the energy of the oscillator. Harry
