What kinds of meterial are called "black body"?

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What kinds of meterial are called "black body"?

2007-01-26 13:49:15 · 2 answers · asked by JAMES 4 in Science & Mathematics ➔ Physics

Is metal called black body? water?

2007-01-26 14:11:12 · update #1

2 answers

A black body can be any material. The only stipulation is that its emissivity is 1, i.e., that it be "black".

2007-01-26 13:58:19 · answer #1 · answered by arbiter007 6 · 0⤊ 0⤋

the idea behind a 'black body' is that it is a perfect emitter and a perfect absorber since black things radiate and absorb radiation at greater rates. Stars are said to be black bodies (although this is not necessarily true).

2007-01-26 14:02:18 · answer #2 · answered by william k 2 · 0⤊ 0⤋