Light and Colors
Edit Date: 2017-06-04 23:20:19


We can see colors as a result of the interaction between light and matter. Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). The main source of light on Earth is the Sun. We can see also the visible colors of the light by rainbow which is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky.

Take a look into the attached video for more information about light and its interaction with matter to obtain colors, then answer the following question below.


 BLOSSOMS lesson:

Could  the compound p-amino-o-Cresol be used as a hair dye?


Question Created By: Amona Abu-Younis Ali
Creation Date: 2017-05-22 14:36:40
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