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Nuclear reactions.
quantum
quantum
energy
This is the activation energy.
australia
If the photon is having very less frequency (say v=1Hz) ,then the Energy of such photon will be the smallest one. It can be inferred that the smallest unit of light energy will correspond to the smallest frequency of such quanta. But from the uncertainty principle it limits the energy of a quanta.
Yes, a huge amount
The term quantum is taken from Latin and simply means amount or quantity. In the field of quantum mechanics it has been determined that there is a specific amount of matter, energy, space, or time, which is the smallest possible amount. In other words, energy comes only in certain packages. It cannot be subdivided without limit, into ever smaller amounts. This is not unlike the fact that there is a smallest amount of any given chemical element. The smallest amount of oxygen you can have is one oxygen atom. You can cut it in half, but if you do, it isn't oxygen anymore. However, you can't cut one quantum of energy in half. One quantum of energy is the smallest amount of energy that you can have. No smaller amount is possible. Physicists will express this idea by saying that energy is quantized.
Those are called radio waves.
radiation effect
The amount of work used to produce energy