What is the source of light and from where it is originating?

Question

If light is having birth then it is dying also. What is the time gap
between its birth and re-birth.

Answer 1

Its source is an atom giving up some energy in the form of a photon of light. Its end is when it is absorbed by another atom, increasing the energy of that atom. The time the photon exists may be a fraction of a second in the case of light from a lamp in your house where each photon hits an atom of a wall or person or other thing in the room. Or it could be billions of years in the case of a photon from the Sun that misses Earth and all the other planets, stars, asteroids and atoms of gas in outer space and travels across the universe without ever hitting any atom..

Answer 2

The time gap varies directly with the distance traveled. This difference can be measured by radar and displayed on a CRT display. The term RADAR was coined in 1941 as an acronym for Radio Detection and Ranging. A transmitter emits radio waves, which are reflected by the target, and detected by a receiver, typically in the same location as the transmitter.

Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of any wavelength. The elementary particle that defines light is the photon. The three basic dimensions of light (i.e., all electromagnetic radiation) are:

Intensity (or amplitude), which is related to the human perception of brightness of the light,
Frequency (or wavelength), perceived by humans as the color of the light, and
Polarization (or angle of vibration), which is only weakly perceptible by humans under ordinary circumstances.
Due to the wave-particle duality of matter, light simultaneously exhibits properties of both waves and particles. The precise nature of light is one of the key questions of modern physics.

Answer 3

Light is produced from other forms of energy being converted into light or nuclear events. For example, when neon has a current put through it in a sealed glass tube it glows, this is because the excess electrical energy is released by electrons in the form of visible light. Light energy doesn't die, but it can be absorbed by into other forms of energy. For example, when light hits ur black car a lot is reflected but some is absorbed as heat energy (you car becomes hot). You could say that some of the light is "dieing" in this way. The time gap therefore varies, there isn't a set amount of time. Light from a star 90 million light years away is a lot "older" when it might be absorbed then light from your cars headlights striking the same surface.

Answer 4

Light is not dying. Light comes to us on Earth after leaving stars billions of years ago. Light can eventually be absorbed by objects, solid and otherwise, but apart from that it simply continues. The light is created when atoms are fused into heavier atoms with a release of energy, which is the process that fuels stars.

Answer 5

When atoms colide in presence of a lot of energy genrally heat
They emit much of there enrgy and get converted to more heat and light
Light on the sun is generated in a similar way

Where as light from the moon is just by reflection

So stars and satellites follow this way

But our conventional ways of producing light is by converting one form of energy to another
In old bulb technique current passing thru a thin coil produces heat and light
In a much older technique burning things produces light
That thing can wary from the wood to gases or oils

Answer 6

There is no birth and death for light,as we humans have. Light is nothing but an electro-magnetic radiation. It can originate from any source: Example: Sun, Stars. Electric Bulb, Electric spark and so on

Answer 7

The time gap I'm assuming is when the quantum leap occurs in quantum mechanics. This leap from our universe to our parallel universe is taking place at the speed of light. Therefore the extinction period would be light speed divided by 2.

Answer 8

Llight quantum has the absolute speed c=1 in Vacuum.
No other particle can travel with the speed c = 1.
Other particle can travel only with the speed v=s/t.
But if quantum of light flies always rectilinearly c=1,
it is a mad one.
Is he really mad?
I don,t think so.
Light quantum travels slower in a gravitational field ( c<1).
And in nuclear light quantum has other speed (c>1)
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Answer 9

Light originates from the photons of the protonsand neutrons . in the atoms. Light which helps us to see eerything by reflectioin , is itself invisible !

Answer 10

well light is an energy.and energy is never born nor dies.it keeps on changing.let us take sun as an example.when the helium gas is reacts with hydrogen the chemical energy converts into light energy.