# Search results

1. ### I Is space compressible?

I was asking some Big Bang related question on Reddit and someone replied "The big bang is an explosion of space itself. A shock wave requires an explosion propagating into pre-existing material. Not only was there no pre-existing material, there was no pre-existing space to hold it. This all...
2. ### Integer solutions to ax^2 + bx - cy^2 - dy = 0

Homework Statement I am a hobbyist looking for solutions to ax^2 + bx - cy^2 - dy = 0 where all variables are integers and are non-zero. Is there a method of doing this effectively? Homework Equations The Attempt at a Solution I can look at the numbers produced by ax^2 + bx vs cy^2 + dy and...
3. ### Best colour to make paint UV resistant

Hi I am looking to repaint my windows. I've noticed that black paint lasts very well generally. I don't really want my windows black. Is there anyway I can reduce uv damage to the binder in the paint by adding some UV blocking colour? I've googled UV blocking pigments but it doesn't seem to come...
4. ### NASA Interest thread: Nasa warps space time

Not kidding http://mysteriousuniverse.org/2015/04/nasa-may-have-accidentally-developed-a-warp-drive/ Astounding, is it true?
5. ### Any signs of fundamental blocks of energy?

I would just like to ask a basic question as to whether there is any sign of there being a minimum energy block size which may hint at a fundamental particle building unit, or whether there is just a continuum of energies as far as we know so far.
6. ### Sinusoidal path of light video

Can you explain the sort of sinusoidal path here: http://i.imgur.com/vN7PJCu.gif
7. ### Can evaporation take place in this scenario?

This is extemely important to me! In an isolated system of a very large box half filled with water, a small soaked sponge is placed just above the surface of the water. Will the sponge eventually dry? At first I thought not. But the molecules in the vapour above the water might have a higher...
8. ### Non-linear inertia from rest seems common?

It seems to me that there are many instances of 'initial stickiness' when you move an object. Pushing a book over a table for example might be initially hard due to adhesive forces to the table which have formed over time - a plastic coating forming some kind of seal with a varnish is the...
9. ### Are quarks really in isocoles triangle positions?

I have not had any luck in finding out how much is known about the actual positions of quarks in protons and neutrons. I am confused by the brief snippets of information I have managed to find. First by the fact that an electron is fired at a nucleon and that its path can reveal the prescence...