Light Shadows and Reflections
Luminous Objects:- Objects like the sun that give out or emit light of their own are called luminous objects.
Opaque:- If we cannot see through an object at all, it is an opaque object.
Transparent:- If we are able to see clearly through an object, it is allowing light to pass through it and is transparent.
Translucent:- There are some objects through which we can see, but not very clearly. Such objects are known as translucent.
Shadows:-
- Shadows are formed when an opaque object comes in the path of light.
- The shadow can be seen only on a screen.
- Shadows give us some information about shapes of objects
Pinhole Camera:- Pinhole camera can be made with simple materials and can be used to image the Sun and brightly lit objects.
Note:- the Sun gradually becoming darker as the eclipse starts. Never ever look directly at the Sun. That could be extremely harmful for the eyes.
Note:- Light travels in straight line. Mirror reflection gives us clear images.