What is the spot use for cd players what is the spot size, Physics

+44 141 628 6080
[email protected]

What is the spot use for cd players what is the spot size

CD players use an object with NA = 0.45, and laser wavelength A=780nm, whereas the new Blu-Ray disc players use NA= 0.85, λ = 405nm.

a) What is the spot use for CD players

b) What is the spot size for Blu-Ray players.

c) Calculate the ratio of the focal spot area for the Blu-Ray disc player compared to CDs (ie., Ratio= A _Blu-Ray, A_CD)

d) Assuming that the total information on use disc scales inversely with spot area, what would this predict for the number of Gigabytes for a Blu-Ray disc (CD ROMS are 700 MB (1 MB = 1 million byte)?

e) Is the spot-size reduction itself enough to explain the increased data storage of BluRay discs?

f) What else could account for the difference?

View Complete Question

Request for Solution File

Ask an Expert for Answer!!

Physics: What is the spot use for cd players what is the spot size

Reference No:- TGS01303254

Expected delivery within 24 Hours

Have a Question? (oR Write a Review)

Write atleast 100 words!!

Asked Questions

How code of suburbs differs from the code of street

Q1. Explain how the Code of the Suburbs differs from the Code of the Street? Q2. Explain your general thoughts on the book.

Cases of local communities using modern technology

Question: Cases of local communities using modern technology to preserve and revive their traditions:

Symbolic interactionism took off as a theoretical approach

Question: Symbolic interactionism took off as a theoretical approach to the study of deviance during the 1960s

What cases does female status tend to be highest

Question: In which of the following cases does female status tend to be highest? Group of answer choice

How are schools important in the struggle for power

Question: How are schools important in the struggle for power and status?

Problem regarding culturally relativistic

"Gender inequality is not some accidental, hit-or-miss affair. Rather, each society's institutions work together to maintain the group's particular form of

Discussion about cultural appropriation

This week watch the 3 short video clips below about cultural appropriation. These videos will redefine terms like cultural appropriation

Request for Solution File

Ask an Expert for Answer!!

Physics: What is the spot use for cd players what is the spot size

Reference No:- TGS01303254

Have a Question? (oR Write a Review)

Recent Questions Asked Physics

Q : What are some of the factors that affect social mobility

Q : How should demmert account for each of these

Q : On a graph with time on the horizontal axis and yt on the

Q : Two players a and b take part in a sequential-move game a

Q : What is the spot use for cd players what is the spot size

Q : The market for beer is perfectly competitive the price of a

Q : Two folks found 100 on the street and have to decide how to

Q : What amount of impairment loss if any should web helper

Q : Review the available literature which will be presented