№ 31.13

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Uploaded: 14.01.2016
Content: 31.13.rar (137,15 kB)


The point source of light consumes power 100 W and evenly emits light in all parties. Wave-length of the light of 589 нм. emitted here. Output-input of source of 0,1% ratio. To calculate the number of the photons emitted by a source for 1 second.

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