To state:why the boundary of the lighted area is a hyperbola and how can one hold a flashlight to forms a hyperbola on the ground.
Answer to Problem 52E
The light from the source is generally blocked off to produce a cone of light, and then that cone is intersected with the wall, creating a
on a angle of grater than
Explanation of Solution
Given information:
From the figure provided in the question it is observed that the boundary of the lighted area is a hyperbola.
The light from the source is generally blocked off to produce a cone of light, and then that cone is intersected with the wall, creating a conic section. For typical arrangements of light fixtures, that section is generally a hyperbola.
To forms a hyperbola on the ground, the flashlight must be hold on a angle of grater than
Chapter 11 Solutions
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