# physics

An American standard analog television picture (non-HDTV), also known as NTSC, is composed of approximately 485 horizontal lines of varying light intensity. Assume your ability to resolve the lines is limited only by the Rayleigh criterion, the pupils of your eyes are 4.80 mm in diameter, and the average wavelength of the light coming from the screen is 570 nm. Calculate the ratio of the minimum viewing distance to the vertical dimension of the picture such that you will not be able to resolve the lines.

1. 1.22*(lambda)/D = (H/480)/L

H is the screen height.
L is the viewing distance for which the line width on the screen equals the eye's limit of resolution.
D = eye pupil diameter.
lambda = avg. wavelength = 570*10^-9 m

Solve for the desired L/H

posted by drwls
2. 12312

posted by Anonymous
3. 13

posted by Anonymous

## Similar Questions

1. ### physics

Imagine an airplane passenger looking down on two automobiles side by side on the ground. According to the Rayleigh criterion, at what maximum altitude will the passenger just resolve them as two if their center-to-center
2. ### physics

Imagine an airplane passenger looking down on two automobiles side by side on the ground. According to the Rayleigh criterion, at what maximum altitude will the passenger just resolve them as two if their center-to-center
3. ### Language arts

In the first stanza, while lines rhyme? A. Lines 1 and 3. 1. It shall flash through coming ages, 3. And eyes now dim with sorrow B. Lines 2 and 4 2. It shall light the distant years; 4. Shall be brighter through their tears. C.
4. ### geometry

Martin drew a pair of perpendicular lines and a pair of parallel lines. Which of these statements best compares the pairs of perpendicular and parallel lines? Answer A: Perpendicular and parallel lines always have a common
5. ### physics

please check these: a laser can be used a. to treat glaucoma b. to measure distance c. to read bar codes d. all of the above D in a laser, all of the following forms of energy can be converted into coherent light except a.
6. ### math

If BC=2, AB=2 and B'C'=4 then compute A'B' the picture is a box starting lower left, the letters go A',B',C',P' clockwise. Then there are lines that go down to form a tip. In the middle going down those lines its just A,B,C,P.
7. ### Help Ms. Sue: Or anyone

Which lines contain examples of end rhyme? BTW I cannot put in the link its to hard to figure out. 1: lines 1 and 3 2: lines 2 and 3 3: lines 5 and 7 **** 4: lines 6 and 8
8. ### Math

There h horizontal lines and v vertical lines drawn in a plane. There are r ways to choose four lines such that a rectangular region is enclosed. Given that r is divisible by 1001. Find the minimum value of h+v. I am really not
9. ### CHEMISTRY

Why is the atomic emission spectrum of hydrogen composed of lines? What does each line indicate? Why do the lines become closer together from left to right in a typical diagram?
10. ### English

1. Write down #1 in the circle in the third picture. 1-1. Write down #1 in the circle of the third picture. 1-2. Write down #1 in the circle on the third picture. 1-3. Write down #1 in the circle related to the third picture. (Are

More Similar Questions