- #1

- 102

- 3

I have a little problem hope you will solution it .

Suppose there is a box that inside it is vacuum and Suppose box is massless .

Consider we import one million photons in the box

Now box has mass equal to m=E/c^2 and E is total energy of photons .

In this case , inside box should not occupy space because photons do not occupy space .

I know this example is not very good for particles but much same .

So i think just matter can occupy space because it has many properties and one of them is mass . right or wrong ?

Thanks