What Is Light?

Some important properties of light

1. Velocity in a vacuum

There have been many studies from scientists proving that the speed of light in a vacuum in particular and the speed of electromagnetic radiation in a vacuum, in general, is 299,792,458 m/s. They are denoted by “c” and are frame-independent.

Properties of interactions with various types of matter

Interaction according to function, including the cell layer that conducts nerve impulses and the cell that senses light. In terms of medicine, we will divide the retina into 10 layers according to its anatomical structure as well as its morphology.with the human eye

In the human eye, there are 3 types of light-sensitive cells that help us perceive 3 different spectral regions, that is, three different colors. Thanks to the combination of 3 signals at the same time from these 3 types of cells, it creates extremely rich color sensations. In addition to creating color images on the screen, we also use 3 lamps capable of emitting light in 3 extremely sensitive spectrum regions of humans.
Because red and green sensory cells have very close absorption spectrums, the human eye is capable of distinguishing a wide range of colors between green and red (such as yellow, orange, etc.). , green…). In addition, the blue and green sensory cells have absorption spectrums located far apart, so the human eye will not distinguish blue well.
About the human retina will be divided into 2 layers

For the eyes of creatures

Compared with humans, organisms will perceive more colors (for example, birds perceive 4 primary colors) or less (such as cows perceive 2 primary colors) than in other regions of the spectrum.
The eyes of living things are generally more sensitive to electromagnetic radiation with wavelengths in the range of 300nm to 1,200nm. This is the wavelength range that coincides with the intensity of the most intensely emitting region in the solar system.
Above is the most basic concept of light, if you need to find out any more specific information, please contact Bao Bao Garan immediately! We are always ready to serve.
Sunlight also contains some components that are harmful to the eyes, so when going out in the sun you need to wear goggles to protect your eyes well!