LNK files use the same icon as their target file, with a small curled arrow to indicate that the file points to another location. When double clicked, the LNK file acts exactly the same as its original.
Photonics is the science of using light to generate energy, detect information, or transmit information. The main purpose of the photonics engineering field is to develop new and innovative products for medicine, telecommunications, manufacturing, and construction.
A photon is an individual piece of light. A photon is like a particle because they can be counted individually, and can hit surfaces one at a time. They are like waves because they are also characterized by wavelength and frequency, A photon is a particle of light.