Kirchhoff's law of thermal radiation rarefied material such as air, or transparent material, through which observations can be made. The interface is not a material body and can neither emit nor absorb. It is a mathematical surface belonging jointly to the two media that touch it. It is the site of refraction of radiation that penetrates it and of reflection of radiation that does not. As such it obeys the Helmholtz reciprocity principle. The opaque body is considered to have a material interior that absorbs all and scatters or transmits none of the radiation that reaches it through refraction at the interface. In this sense
There's a New Sound never "kid themselves properly (or) let their voices go") by making appearances on "The Ernie Kovacs Show" and recording a full-length album, "Music to Suffer By", in the same style she used for "Fish." "There's a New Sound" was later featured often on the Dr. Demento show and performed by Scooter on "The Muppet Show". There's a New Sound "There's a New Sound" was a 1953 novelty song by Tony Burrello and Tom Murray. Burrello, a songwriter and jazz pianist, and Murray started writing novelty songs after they were unsuccessful in having their more serious-minded songs recorded by prominent musicians.