Isnt the Criteria to define existance of an object that it must have volume?

Question

If dark matter exists should it also have volume?

Answer 1

What about Dark Matter ?

Existance is based on the Human Senses; therefore, it can never be defined by humans because we can only define items that we can create a concept of by using out senses.

The speed of Light is being used as a base because we can sense it. There are many faster things that we will never ever know about.

Answer 2

I'm not sure about the volume defining whether or not an item exists. If something exists and has a finite density (and non-zero mass) then it will have volume, but that's a conclusion, not a definition.

Dark matter does have volume. People always talk about dark matter as though it is something strange and completely different to normal matter - it isn't. It's just rocks and stuff floating around in the universe that we can't see because they're in darkness. Dark matter is neccessary to make the laws of gravitation work, there is no question of whether or not dark matter exists, just of how much of it there is.

Answer 3

No, I would not consider volume as a criteria for existence. In fact, the concept of volume has little meaning in the world of particle physics.

From a scientific standpoint, I would suggest the definition for existence would be that the "object" in question must have some property that allows it to interact with other objects in the Universe.

For example, mass is a property that allows gravitational interaction. Charge allows for interaction with other charged particles and with electromagnetic fields.

Conversely, if you posit an object with NO properties allowing interaction, then that object would never be detectable and would have no role in or interaction with any other part of the Universe. Scientifically, therefore, the posited object does not exist.

Answer 4

I suppose that criterion must be mass, but any object that has mass must have non-zero volume, so you could put it this way too. Anyways, it is believed that the dark matter component has vastly more mass than the "visible" component of the universe. And as mass is directly proportional to volume, i guess the volume of dark matter should be more too.

Answer 5

yes

Answer 6

s

Answer 7

no.