[quote=@thewizardguy]
[@AtomicNut]

Darn, it appears I have been Out-Physics'd.

So then how do you explain the phenomenon whereby a box containing light possesses a greater mass than a box that does not contain light?
[/quote]

I can answer this with my dumbass logic.

One box has less air in it, because that air is now light, making it less dense than the other.

Either that or the boxes are differently sized.

[sup]I'm not a physics major[/sup]