Question

What are the characteristics of the energy that we see as visible light? Provide an example illustrating how these characteristics are expressed when someone sees a rainbow. What types of things (situations and/or objects) can interfere with these characteristics?

Answer 1

What are the characteristics of the energy that we see as visible light? Provide an example illustrating how these characteristics are expressed when someone sees a rainbow. what types of things can interfere with these characteristics?

Visible light is electromagnetic radiations, that would be visible to the eye. Visible light has 400-700nm wavelength and has a frequency range of approximately 430-750 THz. In the visible range, the Electromagnetic radiations contain packets of light referred to as quanta or photons. The colours in the visible spectrum start from violet at the longest wavelength and red at the shortest wavelength. The speed of light is 3 × 10 ⁸ m/s. Rainbow is a phenomenon that occurs by a combiation of situations referred to as reflection, dispersion of light and refraction. These are in the form of multicircular arc. Rainbows are always seen in the direction opposite to the sun.

When sunlight would be encountering raindrop, some part of the light would be reflected and the remaining amount of the light would enter the raindrop. After this, when some amount of light would hit the back of the raindrop, it would be reflected from their back. This internal light reflection would reach the surface, and before exiting the drop, there would be a second internal reflection and refraction. The most intense light is observed if reflection is at 42°. This angle does not depend on the size of the drop, but in the refractive index. This can differs if there is interference between the light rays. If there is a change in the paths of the light.