Question

When we are dealing with paraxial rays (d/R<<2), how does the result depends on R? (d/2...

When we are dealing with paraxial rays (d/R<<2), how does the result depends on R? (d/2 can be ignored compared with R)

Please explain in details
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

A lens with spherical surfaces (i.e. surfaces that are a segment of a sphere) does not focus all parallel light rays onto a single point. Instead, there is a focal surface called a caustic. This causes spherical aberration. As long as the lens curvature is small(R small), i.e. the ray is near to the optical axis (paraxial rays), the aberration is small and we approximate the caustic by a single point. However, If R is large, the aberration is significant and the rays come to a focus at a different point.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
2 A) In many spectra, you will see an overlap of X-rays and gamma rays. What...
2 A) In many spectra, you will see an overlap of X-rays and gamma rays. What distinguishes X-rays from gamma rays? B) Explain how GPS can help you to locate your position. C) Why is a radio station not able to transmit microwaves? D) A doctor shows a patient an X-ray of a fractured bone. Explain how the image is produced. What kinds of materials can X-rays penetrate? What can X-rays not penetrate? E) Ultraviolet rays, X-rays, and gamma rays...
2.Assume that investment depends on both the interest rate and the level of GDP. We will...
2.Assume that investment depends on both the interest rate and the level of GDP. We will call the effect of output on investment (loosely) the “accelerator” effect. a. Compare the multipliers for an adverse demand shock on Y with and without the accelerator effect using (i) the algebraic solution for the multiplier and (ii) IS and LM curves. b. Does the addition of the accelerator affect the direct, positive or negative feedback effects? c. Also show how the addition of...
1. What does an r value of zero mean? Solution 2. When n = 2 and...
1. What does an r value of zero mean? Solution 2. When n = 2 and r = 1, are the data significant? Explain. Solution . 3. When n = 100 and r = –0.89, is there a significant correlation? Explain. Solution 4. When testing the significance of the correlation coefficient, what is the null hypothesis? Solution 5. When testing the significance of the correlation coefficient, what is the alternative hypothesis? Solution
When we talk about span a phrase that is often used is "does this set of...
When we talk about span a phrase that is often used is "does this set of vectors span R". What does this mean and what is it asking? Also, how do I discover if something does span R? Can you also provide a stepwise example of how to go about this?
How does [B] change when D is added to the following reaction at equilibrium? 2 A(g)...
How does [B] change when D is added to the following reaction at equilibrium? 2 A(g) + B(g) ↔ 2 C(g) + D(s) How does [B] change when D is added to the following reaction at equilibrium? 2 A(g) + B(g) ↔ 2 C(g) + D(s) [B] will not change. Cannot be predicted. [B] will increase. [B] will decrease.
1. What’s the rationale for producing a R&D budget? 2. How often should a R&D budget...
1. What’s the rationale for producing a R&D budget? 2. How often should a R&D budget be evaluated?
Explain how we can ensure that we're not violating the 4th assumption for Pearson r.
Explain how we can ensure that we're not violating the 4th assumption for Pearson r.
Which one of the following molecules does not have delocalized orbitals ? A) SO2 B) C6H6...
Which one of the following molecules does not have delocalized orbitals ? A) SO2 B) C6H6 C) C2H4 D) CO3-2 E) NO3- Please explain in details how can i solve this question!
When we immediately expense the capital investment instead of depreciating over time, how does this affect...
When we immediately expense the capital investment instead of depreciating over time, how does this affect the Capital Budgeting problem ? Does it mean that the depreciation for this will be 0 and subtract the cost of the asset from the income ? Please help me in understanding how this works.
1. If a test is robust, what does this allow us to do? 2.When we state...
1. If a test is robust, what does this allow us to do? 2.When we state that there is homogeneity of variance, precisely which variances are homogeneous? 3.If you underestimate sigma, the standard deviation of the population, the result is a. the t-statstic being too small b. a smaller probability of type i error c. the estimated standard error being too large d. all of the above e. none of the above
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT