If EVERYTHING in the entire universe doubled in size every 24 hours would be able to notice? I mean could science prove that everything was gaining size if there was nothing that was not gaining size to compare it to?
If everything in the universe doubled in size every second it would be of no concern to us! As long as the growth in the universe was equal each time and the growth was equally dispersed, our units of measurements would not be affected and therefore would be of no concern to us.


If everything was to double in size in the entire universe and such a change could not be detected because there would be no point of fixed reference to compare then would it even be possible to double in size?
Precisely, If everything doubles equally then even our millimetres double in size and would leave the scale of measurement used by us humans untouched and as accurate as it was.

Anyway my question is simply, if light travels at 186,282,397 miles per second where does it go?
Light is moving heat energy which will tarvel until it reaches a surface. Should it meet with a reflective surface it will reflect and continue it's journey elsewhere. Should it meat with a conductive or dull surface it's energy will be absorbed. I.e the Earth conducts heat from the suns rays and therefore limits it's travelling power. Energy will be conducted by any solid particle really and that is why the suns heat energy is deecreased so much by the time it reachess Plutio etc.

I mean you turn a light bulb off and the light instantly vanishes, but the light that has already eminated from the bulb and shot off at 186,000,000 odd miles a second, where does it go to? And can it travel through walls?
As I explained light cannot travel through walls as heat energy is conducted and stored by natural materials, solids, gases, liquids and atmospheres.

If you shone a torch in a cave in pitch darkness would the light that eminated from the torch continue to travel for all eternity to somewhere or does it die and cease to exist? Scientists tell us that matter cannot be created or destroyed so I'm guessing something must happen to it.....but what?
It is absorbed by the cave walls/stone/water etc. A bigger light source would light the cave, a small torch will only emmitt enough heat energy to light a small region of the cave.


It is a well known fact that alcohol makes your breath stink. With this in mind why is it a major ingrediant in virtually every single mouthwash?
Ok, alcohol, does not cause bad breat exactly. It is the extra ingredients included that cause bad breath and odour. The alcohol humans consume rarely tastes like actual alcohol as pure alcohol would cause us to ga and vomit on in take.
What alcohol does do is linger in moist areas (i.e the mouth) for long periods of time. So when it is attached to hops and barley it causes beer breath, when attached to mint it leaves a nice fresh taste.


I believe thems some simple explanations.