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If a beam of light is emitted from a light source that is moving backwards at the speed of light would light be emitted?
Wiki User
∙ 14y ago
It is not possible for any physical object to accelerated to the speed of light. But in one particular extreme it is possible to slow the speed of light according to the Bose-Einstein Condensate. The question better stated would be "Would an independent observer see light emanating from a source that is traveling backwards at the speed of light?" Yes. Light always travels at the same rate. No matter how fast you are traveling, any light that you emit will always travel at a constant rate. (note that it's not possible for a physical object to actually travel at the speed of light in a vacuum).
Wiki User
∙ 14y ago
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What measures the exact frequency of the light emitted when an electron changes levels?
spectroscope
What does black consist of?
The absence of visible light. If no light (or only a little light) is emitted from a particular direction, then when you look in that direction you will see black.
What quantum leaps would be associated with the greatest energy of emitted light?
n = 5 to n = 1
How do you calculate the energy of violet light emitted by a hydrogen atom with a wavelength of 410.1nm?
4.85*10^-19
Light is emitted as an electron transitions from a higher energy orbital to a lower energy orbital How long does it take for the actual transition to take place?
It takes no time as electrons can not exist in an inbetween state of charge
When light waves are emitted by a moving source scientists can measure?
When light waves are emitted by moving source scientists can measure the Doppler effects. It is a source of energy that produces light.
What can scientist measure when light rays are emmitted by a moving source?
Scientist measure when light rays are emitted by a moving source the speed of light. Depending on the moving force they can also measure bending light.
Is a candle a light source?
Yes a candle is a light source. Actually, the unit for intensity of light (candela) is based on the light emitted by a candle.
What type of wavefront will emerge from a point source and distant light source?
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.
What does reflection involve?
Light being emitted from a source and bouncing off an object
What energy is removed or given off?
Light and heat are emitted from an energy source...
Where does light travel to?
Light emitted by any light source - say, by a lamp, or by the Sun - travels in all directions.
What is blueshift?
A blueshift is a change in the wavelength of light, in which the wavelength is shorter than it was when it was emitted at the source.
When light waves are emitted by moving sources scientists can measure?
the Doppler effect! d('_')b
What are red shift lines?
when a luminous source is relatively moving away, the light emitted from the source is almost stretched (the frequency of the waves decrease). In other words, enough redshift will cause violet light to become red due to a decrease in frequency. Light which is already red will turn to infra-red, microwaves, and radio waves. If the redshift is very very very high (this does not usually happen in the universe), even x-rays and gamma-rays can be red shifted to radio waves. Similarly, when the source is moving relatively closer, the light emitted will be blue shifted: the frequency will increase. This is called the Doppler shift or the Doppler effect.
What will happen to emitted photons after the light source cease?
This is yet to be proven With the only response related to astronomical objects that “supposedly have ceased” but to date that is a statement that is unverifiable. Many have this assumption because of other provable systems like heat and sound but light maybe in a category yet explored. A hypothesis to be proved is: “light ceases to exist when it has no source”. Maybe this can be proved with lasers…
Why is mercury used in streetlights?
The light emitted by excited mercury gas is predominantly in the visible spectrum and as a light source is relatively efficient.
