If light is made up of Photon which has some mass then how it can pass through Transparent Glass
Or if you say that light is Electromagnetic Energy then how it can not
escape from the Gravitational Force of Black hole. As we all know that
Gravitational force only act b/w 2 bodies that have some mass i.e
F=(G*M1*M2)/R^2. So What is Light Energy or Element which has some
mass
some photons pass through the structure of glass(arrangement of
atoms).some photons dont pass and strike the atoms of the
glass.photoelectric effect occurs which make the atoms emit rays(infra red
which cause heating).photons have mass and energy.
when light strikes the black hole the energy is emitted but
mass is sucked in.hence no photons are emitted so it is invisible but the energy may be released as radio or other waves
Photons are not fermions (matter particles) and so do not
behave as you may expect. To start with they always behave as a classical
wave and separate particles at the same time.
Whether or not a photon/wave goes though a material depends on the
electronic structure of the material.
(The existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei.) - to Grendle
many things with mass (not just photons) can travel through
seemingly solid objects - neutrinos for example. To understand this you
have to look at the composition of atoms from quanta. and realise that the
spaces between and within atoms are of relative orders of magnitude. Lights
main sensitivity is actually colour, i.e. many more photons are absorbed by
black than by white - which could go someway to explaining Hawking
radiation.
Don't get too deep here.
Hold a ''transparent'' piece of glass in bright sunlight & you will see
that it does, in fact, cast a shadow. That is because photons are being
blocked. The glass will also grow warm/hot, as the energy of the blocked
photons is transferred to the glass molecules (silica, mostly).
It is fairly apparent (though far from proven) that what we humans
perceive as light is a form of electromagnetic energy (no capitals please), but the nature of that energy is still debated - particles, wave forms, magical emanations . who has held a photon? We have experiments that indicate that light exerts mass . remember the little vanes in a glass bulb spinning in the light? . but still. As for ''Black Holes'' - they are still theory. No one has located one, for sure. Astronomers have seen what appears to be the effects of a super-massive non-radiating body on some distant galaxies, but what is causing that effect has yet to be determined - black holes, or giant space goats or what. So again, don't get in too deep. Light has some interesting properties that are fun to speculate about & figure out new uses for. It bends, impacts, heats, can be manipulated with prisms & mirrors, hurts like hell after a day at the beach, will burn satellites from orbit or transmit absolutely incredible amounts of data over a fiber optic line . But at the moment, no one (and don't let anyone tell you differently) NO ONE knows the full & absolute answer to ''WHAT IS LIGHT?'' Maybe you can help?
i have never understood this issue if light is mass-less how is
it bent by gravity ,,,,a paradox or a pair of doxe is ??
Tricky man. I think it has properties of both a wave and an
object with mass.
It may interest you to know though, that unless the glass is a special
kind, ie the sort they use for greenhouses, light does actually lose some
energy by travelling through glass. I think it is the ultraviolet element.
It is harder to get sun burn if a pane of glass is between you and the sun.
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