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Difference in arrival time of the two pulses

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Question 1: A very short pulse of light is emitted from a laser radar, and is reflected back from an object 1 km away. How long after the transmitted pulse is the received pulse? Consider a similar experiment on the cornea of an eye. We expect two reflections, one from the front of the cornea and one from the back. The cornea thickness for this patient is 500 µm and we'll assume the index of refraction is 1.4. What is the difference in arrival time of the two pulses? Do you think this will work?

Question 2: List three materials that are mostly specular reflectors for visible light. List three that are mostly diffuse, and three that exhibit both effects to a noticable degree.

Question 3: One way we can estimate the distance to an object is by triangulation. If a small object is very far away, rays of light from it are nearly parallel. As we bring the object closer, the angles of the rays (normal to the wavefronts) to our two eyes become different. What is the difference between these angles for an object at 10 m? What is it at 10 cm?

Reference no: EM132441521

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