Answered: Consider a typical red laser pointer…

Consider a typical red laser pointer with wavelength 653 nm. What is the light's frequency in hertz? (Recall the speed of light c = 3.0 × 108 m/s)

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter5: Radiation And Spectra

Section: Chapter Questions

Problem 42E: What is the frequency of a red laser beam, with a wavelength of 670 nm, which your astronomy...

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Question

Consider a typical red laser pointer with wavelength 653 nm. What is the light's frequency in hertz? (Recall the speed of light c = 3.0 × 10⁸ m/s).

Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.

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