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Why the intensity of the light in a flashlight beam decreases as the flashlight moves farther away?
Wiki User
∙ 13y ago
Because the constant amount of light that the flashlight produces is spread out
over a larger area when it's farther away, so the intensity at every point is less.
Light decreases inversely to the square of the distance.
Wiki User
∙ 13y ago
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Why does the brightness of the light emitted by a flashlight decrease as the flashlight moves farther away from you?
Because the constant amount of light that the flashlight produces is spread outover a larger area when it's farther away, so the intensity at every point is less. The flashlight might attack you, so be careful. Also, if your earlobes are out of control, tape them down. Please.The torch light penetrate each so much light is not parallel, with the light propagation distance become far, spacing between the light light is more and more big, making smaller according to the density of light in the distance.
Increases or decreases the light intensity on a microscope?
2,7,9,5,10
What happens to the light intensity if you tripled the distance to the source?
For example, assume you are shining a flashlight at the wall. If you move twice as far from the wall, the spot of light will be twice the diameter. If the diameter doubles, then the area of the spot is 4 times as big. Thus, the same light is lighting 4 times as much wall. Thus, the intensity is 1/4 of the original intensity. The intensity varies with the inverse of the square of the distance.
Why does the intensity of light change with distance?
As light gets farther from the source, the same amount of light spreads out over a larger area.
Why intensity decreases as distance from the light source increase?
intensity increases as distance decreases. you cant explain that. scources- bill o'reily
Why does the Brightness of the Light Emitted by a Flashlight Decreases as the Flashlight moves farther away from you?
Because the constant amount of light that the flashlight produces is spread outover a larger area when it's farther away, so the intensity at every point is less. The flashlight might attack you, so be careful. Also, if your earlobes are out of control, tape them down. Please.The torch light penetrate each so much light is not parallel, with the light propagation distance become far, spacing between the light light is more and more big, making smaller according to the density of light in the distance.
Why does the brightness of the light emitted by a flashlight decrease as the flashlight moves farther away from you?
Because the constant amount of light that the flashlight produces is spread outover a larger area when it's farther away, so the intensity at every point is less. The flashlight might attack you, so be careful. Also, if your earlobes are out of control, tape them down. Please.The torch light penetrate each so much light is not parallel, with the light propagation distance become far, spacing between the light light is more and more big, making smaller according to the density of light in the distance.
Increases or decreases the light intensity on a microscope?
2,7,9,5,10
How does changing the light intensity effect photosynthesis and why?
By changing the light intensity the rate of photosynthesis will either increase or decrease because it is one of the factors that affects photosynthesis. If you increase the light intensity the rate increases but if you decrease the light intensity the rate decreases.
Why can a lazer light go farther than a flashlight?
Because The Miz said so.
What happens to the electricity to make its intensity decrease by distance as the inverse square law of coulombs Just What happens to electricity that decreases it's intensity?
There's no mystery to that. It simply spreads out.It's easy to understand if you think about using a flashlight at night. Point it at,let's say, a sheet of white paper.-- When the paper is close to the flashlight, the illuminated circle on the paperis small and bright.-- When the paper is farther from the flashlight, the illuminated circle is larger,and less bright.An easy way to describe it is: The same amount of light has to spread out overmore area, so the light at each point within the illuminated area is less intense.The diameter of the illuminated circle is growing directlyas its distance fromthe flashlight. But the intensity of the light depends on the area of the circle,so guess what . . . It falls off as the square of the distance.This is a pretty good math-proof analogy to the electrostatic field intensityat varying distances from a point charge.Does this do anything for you ?
What happens to the illuminance when you move away from the light source?
The intensity decreases.
Why does the intensity of light change with distance?
As light gets farther from the source, the same amount of light spreads out over a larger area.
What happens to the light intensity if you tripled the distance to the source?
For example, assume you are shining a flashlight at the wall. If you move twice as far from the wall, the spot of light will be twice the diameter. If the diameter doubles, then the area of the spot is 4 times as big. Thus, the same light is lighting 4 times as much wall. Thus, the intensity is 1/4 of the original intensity. The intensity varies with the inverse of the square of the distance.
Increasing the intensity of light decreases the rate of photosynthesis true or false?
false
What happens to the intensity of a bright fringe when the wavelength of the light is increased?
It decreases. This is because the same amount of energy is distributed over a larger area (wavelength increases, so fringe spacing also increases). Energy per unit area decreases and this is why intensity decreases.
Why does the limb of the Sun appears darker than the center?
When you face the flashlight towards you, you get the full intensity of the light while when you face it away from you you get some light but not all.
