Electromagnetic radiation total absorbance

Atomic matter is the blossoming of all matter, making up for its weakness in numbers by its force of expression. For humankind, it is the sensorial manifestation of the Universe, its crowning eloquence. Indeed, it stands out by its expression in light, in stark contrast to dark matter which is totally indifferent to electromagnetic radiation, neither absorbing nor emitting it, in this respect a featureless entity. 

Blackbody Radiation The process by which solar energy absorbed by the Earth is transformed into longer wavelengths and reradiated back into the atmosphere. In physics, a blackbody is a perfect adsorber of electromagnetic radiation that can be released at other wavelengths with no loss of total energy. 

A diode laser emits at a wavelength of 987 nm. (a) In what portion of the electromagnetic spectrum is this radiation fotmd (b) All of its output energy is absorbed in a detector that measures a total energy of 0.52 J over a period of 32 How many photons per second are being emitted by the laser ... 

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