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What type of wavefront will emerge from a point source and distant light source?
Wiki User
∙ 14y ago
For a point in space (or from a distant light object), spherical waves are emitted.
From a point source on the surface of a liquid, circular waves will come out.
In both cases the source will be the focus of the emitted waves.
Wiki User
∙ 14y ago
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Why do people say looking at stars is like looking in the past?
Because the speed of light is finite (around 186,000 miles per second) and the stars are so distant, it takes a long time for the light to reach the telescope from the stars - at least 4.2 years. Many objects are millions of light years distant, meaning that what we see in the sky is from the distant past.
Is earth a source of light?
no
What are the two regions of Earth's shadow during an eclipse?
There are actually three identified shadow regions in an eclipse; Umbra, penumbra, and antumbra.The umbra is the region where the light is totally obscured.The penumbra (partially shadowed) is the region of partial eclipse - the light is diminished, but not totally.The antumbra is that rather more distant region in the Umbra, where the light source may be perceived as a circle. A lesser known term.
Is lightning a light source?
yes
What is the main source of energy that heats your earth?
Our main source of energy is the light and heat from the Sun.
Why are the light rays coming from a distant object are assumed to be parallel?
Instead of parallel rays, consider the light as a wave front. It leaves the source in a spherical wavefront. At a certain distance the sphere is so large and the curvature of the wavefront becomes so small that it can be considered locally flat, and behaves optically as though it were flat. At that point, the flat wave front is equivalent to parallel rays (which are perpendicular to the front).
What will be the shape of wave front of light coming from a point source place at infinity?
plane wavefront
Do the properties of light change when it undergoes diffraction?
No, the light remains the same light; but it is spread out in a different wavefront.
How far in light years is the most distant know source in the universe?
I dont know can someone answer it ?
How is a rainbow related to light?
Rainbow is formed when light from a distant source falls on a collection of water drops such as in rain, spray, or fog.This is how rainbow related to light.
When was Light a Distant Fire created?
Light a Distant Fire was created in 1988.
How many pages does Light a Distant Fire have?
Light a Distant Fire has 432 pages.
What effect does a plane mirror have on the speed of light?
A mirror has no effect on the speed of light, but it has a radical effect on thevelocity of the wavefront, because it reverses the direction of the normalcomponent of the velocity.
How rainbow are formed?
Rainbow is formed when light from a distant source usually the Sun falls on a collection of water drops such as in rain, spray, or fog.
When was Distant Light - The Hollies album - created?
Distant Light - The Hollies album - was created on 1971-10-08.
What cause changes in the light coming from distant stars and galaxies?
The apparent redshift is caused by the Doppler Effect; the frequency of waves is increased by an approaching source and decreased by a leaving source. Since the fgrequencies we see from stars are slightly lower than they should be, we know that the stars and other objects are moving away. The Doppler Effect causes changes of light emanating from distant stars and galaxies.
Are lightsabers a chemical light source?
Yes. Plasma is created through the use of a Diatium power cell, and then is sent through focusing crystals, causing a blade to emerge from the emitter.
