Energy. Different amounts of energy in different photons depending on the frequency of radiation involved. When you have a case where radiation of one frequency is absorbed and radiation of a different frequency is emitted, you have something that can chop up photons and reassemble energy into new ones.
It is divisible. It may be that it can’t take up a form where there’s only one of whatever the stuff is, but there is nothing fundamental about a photon.
This really isn’t how physics works. The photons have not been disassembled and reassembled. They have been absorbed, adding their energy to the atom, and then the atom emits another photon, possibly of the same energy but possibly of another.
Edit: You can construct a photon with arbitrarily low energy simply by choosing a sufficiently large wavelength. Distance does not have a largest-possible-unit, and so energy does not have a smallest-possible-unit.
There is likely a minimum amount of energy that can be emitted, and a minimum amount that can be received. (Bear in mind that the direction in which a photon is emitted is all directions at once, and it comes down to probability as to where it ends up landing, so if it’s weak in one direction, it’s strong the opposite way.)
There is likely a minimum amount of energy that can be emitted, and a minimum amount that can be received.
Do you mean in the physical sense of “there exists a ΔE [difference in energy between two states of a system] such that no other ΔE of any system is less energetic”? Probably, but that doesn’t mean that that energy gap is the “atom” (indivisible) of energy. (If ΔE_1 is 1 “minimum ΔE amount”, or MDEA, and ΔE_2 is 1.5 MDEA, then we can’t say that ΔE_1 corresponds to the atom of energy. For a realistic example, see relatively prime wavelengths and the corresponding energies, which cannot both be expressed as whole multiples of the same quantity of energy.)
Energy. Different amounts of energy in different photons depending on the frequency of radiation involved. When you have a case where radiation of one frequency is absorbed and radiation of a different frequency is emitted, you have something that can chop up photons and reassemble energy into new ones.
“Energy” is a mass noun. Energy is not a bunch of little things things can photon in composed of.
It is divisible. It may be that it can’t take up a form where there’s only one of whatever the stuff is, but there is nothing fundamental about a photon.
This really isn’t how physics works. The photons have not been disassembled and reassembled. They have been absorbed, adding their energy to the atom, and then the atom emits another photon, possibly of the same energy but possibly of another.
Edit: You can construct a photon with arbitrarily low energy simply by choosing a sufficiently large wavelength. Distance does not have a largest-possible-unit, and so energy does not have a smallest-possible-unit.
There is likely a minimum amount of energy that can be emitted, and a minimum amount that can be received. (Bear in mind that the direction in which a photon is emitted is all directions at once, and it comes down to probability as to where it ends up landing, so if it’s weak in one direction, it’s strong the opposite way.)
Do you mean in the physical sense of “there exists a ΔE [difference in energy between two states of a system] such that no other ΔE of any system is less energetic”? Probably, but that doesn’t mean that that energy gap is the “atom” (indivisible) of energy. (If ΔE_1 is 1 “minimum ΔE amount”, or MDEA, and ΔE_2 is 1.5 MDEA, then we can’t say that ΔE_1 corresponds to the atom of energy. For a realistic example, see relatively prime wavelengths and the corresponding energies, which cannot both be expressed as whole multiples of the same quantity of energy.)