Understanding How Light Travels and Objects Are Seen
Discover how light travels and how objects are seen through the eye. Learn about luminous and non-luminous objects, light sources, and the role of reflected light in vision.
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Presentation Transcript
How Light Travels Which is the odd one out and why?
How do you see an object? Light from the object enters your eye. Do you see all objects in the same way? There are two ways you see objects: You see some objects because they are light sources. You see other objects by reflected light.
A luminous object gives out light and can also be called a light source. How does light from a light bulb and other light sources reach your eye? Light travels in a straight line directly into your eye.
Objects that do not give out light are non-luminous. How does your eye see non-luminous objects such as a book? Light from the light source strikes the book and some of the light is reflected into your eye.
