Now i'm researching the size of photon....The silicon atoms size typical is 1.2 angstrom. is it possible can replaced the hardware by transfer current within transistor using photon instead of silicon atoms, If the photon size much smaller than silicon atom, it can minimize the IC feature size.
The diameter of the photon is around 10-5 Angstrom, so much smaller than diameter of an atom
Hi Ting Ting Chong,
A photon has size but probably not in the rigid sense that we think about with macroscopic objects. Although photons exhibit properties of particles (and we know the size and mass of subatomic particles such as protons etc.), they also exist as a wave. This is known as wave particle duality.
A 2-d surface can´t have volume so it´s meaningless in such a space, but area isn´t. The radius for photons in this (mathematical) space is never more than the same constant value (but the two components vary sinusoidally about a zero point, so that the area is also cycled this way, from zero to a constant value, and the cycle time, or frequency, determines the energy of a particular photon), this (maximum constant amplitude) appears to be related to its apparent velocity, somehow.
The energy is not related to the distance traveled, unless the photon interacts with another photon (or an electrical or magnetic field, or collides with an electron or other charged bit of matter). In other words you could say that the energy in a photon is bounded by (integrable over) a single period of its cycle (or something similar), like a packetised bit of energy, rather than the integral of all the periods it has cycled through on its journey."
So although the photon appears to exist without physical volume or geometrical size, we can measure the region where the wave's magnitude is non-negligible. This happens at about half a fermi, or roughly 0.5x10-15m.
Thankyou
If we declare that light is constituted of photons , also photons are emitted from radiative recombination , impossible that photons from the sun (continuous source ) to be similar to those coming from radiative recombination from a III-V semiconductor one , the latter has a definite recombination lifetime , so photon spectrally has a rise time , fall time , etc all that during the recombination lifetime ,, so definitely its spatial length will be the speed of light multiplied by the recombination lifetime "assuming it started to propagate at the onset of its recombination",, this will certainly result on its non monochromaticity or it will have a spectral distribution ,, does anyone know if such a study have been studied ,, thatnks
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