Light Rays & Light Beams

• The narrow path in which light is transmitted known as a light ray 

  

•  A light beam is made up of a collection of light rays.          

Reflection is when light bounces off an object. If the surface is smooth & shiny, like glass, water, or polished metal, the light will reflect at the same angle as it hit the surface.

                          

Refraction is the bending of a wave when it enters a medium where its speed is different. 

The refraction of light when it passes from a fast medium to a slow medium to a slow medium bends the light ray toward the normal to the boundary between the two media. 

   

                                       

 

Each color has a different wavelength. Red has the longest wavelength.

When all the waves are seen together, they make white light