×
Get Full Access to Conceptual Physics - 12 Edition - Chapter 21 - Problem 42e
Get Full Access to Conceptual Physics - 12 Edition - Chapter 21 - Problem 42e

×

# The width of a laser beam is significant in reading CDs

ISBN: 9780321909107 29

## Solution for problem 42E Chapter 21

Conceptual Physics | 12th Edition

• Textbook Solutions
• 2901 Step-by-step solutions solved by professors and subject experts
• Get 24/7 help from StudySoup virtual teaching assistants

Conceptual Physics | 12th Edition

4 5 1 395 Reviews
19
5
Problem 42E

The width of a laser beam is significant in reading CDs and DVDs. The thinner the beam, the closer the series of pits can be. Why will blue laser light allow closer pits than red laser light?

Step-by-Step Solution:

Solution 42E Step 1 of 2: As the beam waist limited to a diameter of roughly of that wavelength, the size of the laser beam depends on the wavelength of the light. Also as the electromagnetic waves cannot read the structures much smaller than their own wavelength. Blue light(405 nm) has smaller wavelength compared to red light(700 nm). So blue light can form a narrow beam waist.

Step 2 of 2

##### ISBN: 9780321909107

The full step-by-step solution to problem: 42E from chapter: 21 was answered by , our top Physics solution expert on 04/03/17, 08:01AM. This full solution covers the following key subjects: laser, pits, beam, light, closer. This expansive textbook survival guide covers 45 chapters, and 4650 solutions. This textbook survival guide was created for the textbook: Conceptual Physics, edition: 12. Conceptual Physics was written by and is associated to the ISBN: 9780321909107. Since the solution to 42E from 21 chapter was answered, more than 1113 students have viewed the full step-by-step answer. The answer to “The width of a laser beam is significant in reading CDs and DVDs. The thinner the beam, the closer the series of pits can be. Why will blue laser light allow closer pits than red laser light?” is broken down into a number of easy to follow steps, and 37 words.

#### Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

The width of a laser beam is significant in reading CDs