Early scientists were not able consider light
"moving" – they initially thought it shot out quickly from our eyes –
somewhat like laser shafts. Be that as it may, after some time, and with
additionally understanding the estimations of the movement of these wave-like
particles of light turned out to be increasingly exact. On account of the work
of Einstein on relativity, we now see light speed to be a speed confine which
can't be beaten by anything which has mass.
As per relativity, as a question moves quicker, its mass
increments, while its length contracts. As we get closer to the speed of light,
it takes increasingly energy to make the question move quicker, yet the protest
gets heavier and heavier significance it takes increasingly vitality increment
the speed. At the speed of light, such a protest would have a limitless mass,
while its length is 0 — which is hypothetically outlandish.
Likewise in the event that you needed to quicken a solitary
electron to 'light speed', you would require an unbounded sum energy because of
the electron winding up interminably substantial. There isn't sufficient energy
in the whole universe to drive only a solitary electron to the speed of light.
Presently light can go at light speed on the grounds that the
particles which make up light (called photons) have no mass, they are basically
unadulterated energy
Photons are quite unique. Not exclusively do they have no
mass, which gives them free reign with regards to hurdling about in vacuums
like space, they don't need to accelerate. The regular energy they have, going
as they do in waves, implies that the minute they are made, they are as of now
at top speed.
So, in light of the fact that they have no mass they can
only go at this speed.
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