Aslaam-o-Alaikum

In Science, we study, everything in the universe is made up of matter. Then Please clarify me, Is Shadow (Saaya) also a matter?
Please reply with logics . . .

Waiting for your replies . . .

Have a good time

Definition - Matter
Any particle which possesses mass, eg proton, electron. Particles which just carry energy e.g. photons, and possibly neutrinos, do not constitute matter.

Common Definition
The common definition of matter is anything that has both mass and volume (occupies space).

Conclusion
Form the above definitions we can say that even light not a form of matter. (as it consists of photons) Now, shadow is merely the absence of light so it cannot be considered as a form of matter.

__________________
When you have to shoot, shoot. Don't talk. ~ The Good, The Bad, and the Ugly

That's true that everything is made up of matter in the universe, but go thru the definition of matter first. Anything that has mass and volume is called matter.
Shadow is just an effect where there is no light, it's not matter.

Aslaam-o-Alaikum

Ok buddies. I want to tell u people that whenever somebody shared its thougts with others. Everybody rejects his views in the light of available concepts. But do u really not think that it needs research on the fact taht Is Shadow a matter or not.

What u say about it . . .

__________________
Acchhh...
Kya Ho Gaya Hai Yaar

I think this does not require a research
Shadow is merely an effect that is created due to the absence of light at any point (i.e. it's darkness). Now, the more sensible question would be if "darkness" is matter or not ? Here again we can say that darkness is merely the absence of light. Nothing reflects back to your eyes so all you see is darkness. It cannot be regarded as matter as matter needs to have some volume and occupy some space !

Now the statement that says "All universe is composed of matter" means something. This means that the constituting elements of the universe are some form of matter. Darkness, Light etc. they are not the constituting elements of the universe. They are just the effects that we observe due the physical phenomenon in the universe.

These are my personal views, You can do some research
As a starting point, try to search something about "Shadow Matter". There is a concept with this name.

__________________
When you have to shoot, shoot. Don't talk. ~ The Good, The Bad, and the Ugly

Buddy in order to reach any conclusion, first one should be clear about the true nature of light. Light has a dual nature and to explain a certain phenomenon you have to consider only that nature that could satisfy your observartions. There is no phenomenon that can fully satisfy both the natures of light. If light is being considered as a packet of energy, even then it should be kept in mind that energy and mass are interchangable. Our eyes are sensitive to only a certain range of wavelengths while we cann't detect a wide range of wavelenghts by unaided eye. So, in a shadow, only a particular band of wavelengths are missing. Hence, even an area marked as a shadow may have particles and energy that we are unable to detect and hence it can be classified as matter.

@Farish
okay..right.
studying nature of light, even has nothing to do with this question.
Thinking and raising question is quite a good excercise, it should always be encouraged. But here it lacks logical reasoning actually.
Therefore, I dont think this debate would lead us to any sound conclusion.
Considering even wavelenghts of light wont make shadow a matter as light with all its waveleghts passes through the vaccum also!!And we all know what vaccum is!
And matter has its own self existance in one form or another but shadow is just an effect of a physical body in absence of light...it has not even its own self existence....it completely depends upon some physical object to prove its existence.
Think. Being even part of the universe somehow, we can't term it as matter!
Regards.

__________________
The Me you have always known, the Me that's a stranger still.

SALAM... what is wave? is it matter? so what is shadow if wave is matter then shadow is also a matter b/c interference of light make a shadow..... any one can help me to solve this prob..

You're talking about a light wave; No, it's not a form of matter.
Light waves are tiny packets of photons and a photon is a basic unit of all forms of electromagnetic radiations. Now in turn electromagnetic radiation is ubiquitous phenomenon (note it's a phenomenon, not matter)

So in conclusion we can say that light and all other things associated with it (e.g shadow) are phenomena not matter.

The details are interesting you may like to try some googling over it.

__________________
When you have to shoot, shoot. Don't talk. ~ The Good, The Bad, and the Ugly