Before we study Luminous and Non-Luminous objects,
Let’s learn What are Visible and Invisible Objects and how we see objects
What are Visible and Invisible Objects?
Objects which we can see are called Visible Objects
Objects which we are not able to see are called Invisible Objects
Why are we able to see Objects?
When light from an object enters our EYE,we are able to see an object
This light may be emitted by object or may be reflected by It
What are Luminous and Non Luminous Objects?
If light is emitted by object,the object is called Luminous Object
Sun emits its own light
Other examples are Stars, Torch, Candle, Filament of a Bulb, Hot red Iron, Fireflies
Non Luminous or Illuminated Objects
Some objects do not have their own light, they reflect light of other objects
These objects are called Non Luminous Objects
Moon - Moon reflects the light from the sun
Other examples are Earth and other Planets, Paper, Tree
What make things visible?
Or we can also say
(How are we able to see different objects?)
This flow chart explains it well
We are able to see an object when light from an object enters our eyes
This light can be
Emitted by object(These are called Luminous Object)
Reflected by Object(These are called Non Luminous Object)