Physics
Physics, 25.02.2020 03:00, student176

Very short pulses of high-intensity laser beams are used to repair detached portions of the retina of the eye. The brief pulses of energy absorbed by the retina welds the detached portion back into place. In one such procedure, a laser beam has a wavelength of 810 nm and delivers 250 mW of power spread over a circular spot 510 μm in diameter. The vitreous humor (the transparent fluid that fills most of the eye) has an index of refraction of 1.34.A) If the laser pulses are each 1.5 ms, long, how much energy is delivered to the retina with each pulse?B) What average pressure does the pulse of the laser beam exert on the retina as it is fully absorbed by the circular spot?C) What is the wavelength of the laser light inside the vitreous humor of the eye?D) What is the frequency of the laser light inside the vitreous humor of the eye?E) What is the maximum value of the electric field in the laser beam?F) What is the maximum value of the magnetic field in the laser beam?

answer
Answers: 2

Other questions on the subject: Physics

image
Physics, 22.06.2019 04:00, Isaacochoa780
The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane
Answers: 2
image
Physics, 22.06.2019 12:00, chas8495
For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up
Answers: 2
image
Physics, 24.06.2019 00:30, Dede6308
Find an expression for the electric field e⃗ at distance x from the end of the rod. give your answer in component form. express your answer in terms of the variables q, l, x, unit vectors i^, j^, and appropriate constants.
Answers: 3
image
Physics, 24.06.2019 02:30, peanutpinkypiepdma46
Tweedeldum and tweedledee are carrying a uniform wooden board that is l = 3.00 m long and has a weight of w = 160 n . if tweedledum applies an upward force of magnitude f1 = 60.0 n at the left end of the board, at what point and with what magnitude f2 of force does tweedledee have to lift for the board to be carried?
Answers: 2
Do you know the correct answer?
Very short pulses of high-intensity laser beams are used to repair detached portions of the retina o...

Questions in other subjects: