Port-wine birthmarks, which are caused by malformed capillaries close to the skin, can be removed with laser pulses. Laser light of the right color will pass through the skin with little absorption but will be strongly absorbed by oxyhemoglobin in the blood of these capillaries, which destroys them withoutdamaging adjacent tissue. A typical system uses a series of 6900 W pulses of 585 nm laser light. Each pulse lasts 0.45 ms. How many photons are in each pulse?

Port-wine birthmarks, which are caused by malformed capillaries close to the skin, can be removed with laser pulses. Laser light of the right color will pass through the skin with little absorption but will be strongly absorbed by oxyhemoglobin in the blood of these capillaries, which destroys them withoutdamaging adjacent tissue. A typical system uses a series of 6900 W pulses of 585 nm laser light. Each pulse lasts 0.45 ms. How many photons are in each pulse?

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 53P

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