2006-12-05 00:23:19 · 6 answers · asked by abilash b 1 in Science & Mathematics ➔ Astronomy & Space
I'll bite. Darkness is dimensionless. It is expressed logarithmically, as a density. For example, dark sunglasses with a density of 1.0 will only let 10 percent of the light through, density 2.0 only lets 1 percent through, density 3.0 lets just 1/1000 through. If you do any arc welding, you'll want density 5, which is dark enough to look at the sun.
2006-12-05 03:04:12 · answer #1 · answered by rairden 4 · 1⤊ 0⤋
The Nemul
2006-12-05 08:32:10 · answer #2 · answered by Iridflare 7 · 0⤊ 0⤋
That's like saying, "What is the unit of coldness."
2006-12-05 08:38:40 · answer #3 · answered by JJ 7 · 0⤊ 0⤋
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2006-12-05 08:29:17 · answer #4 · answered by RZA 4 · 0⤊ 0⤋
light per one meter.
2006-12-05 09:57:37 · answer #5 · answered by Anonymous · 0⤊ 0⤋
undetermined.
2006-12-05 09:22:22 · answer #6 · answered by candy 2 · 0⤊ 0⤋