The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2.0*10^-17 J of energy to trigger a series of impulses that eventually reach the brain. How many photons of red light (700nm) are needed? How many photons of blue light(475 nm) are needed? Remember, E=hv allows calculation of the energy of a single photon

The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2.0*10^-17 J of energy to trigger a series of impulses that eventually reach the brain. How many photons of red light (700nm) are needed? How many photons of blue light(475 nm) are needed? Remember, E=hv allows calculation of the energy of a single photon

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 75P

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