What's up? The word "deposition" in the following quotation from the article on microwave ovens in Wikipedia seems to have a meaning that I am not familiar with and that I do not find in MW Unabridged or American Heritage Dict:
Depending on water content, the depth of initial heat deposition may be several centimetres or more with microwave ovens, in contrast to broiling/grilling (infrared) or convection heating—methods which deposit heat thinly at the food surface.
(Maybe I am making too much of it and the writer just means how far the heat penetrates. If so, I think he/she is guilty of using fancy language instead of plain English in order to sound oh-so-technocratic.)