A Small Gas Laser of the Type Used in Classrooms

question 184

Short Answer

A small gas laser of the type used in classrooms may radiate light at a power level of 2.0 mW. If the wavelength of the laser light is 642 nm, how many photons does it emit per second? (c = 3.0 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

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Definitions:

Axon Terminals

The distal terminations of an axon, responsible for transmitting signals to other neurons or muscle cells through synapses.

Dendrites

Branch-like extensions of neurons that receive signals from other neurons.

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Cell Body

The part of a neuron that contains the nucleus and most of the cytoplasm, serving as the site for essential cellular functions.