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There are a set of constants that crop up in science again and again, usually in the explanations for various effects.

Here are a few of them:

- alpha - determines what happens every time a photon hits matter
- C - the speed of light
- D - the number of spatial dimensions in our world
- Epsilon - the nuclear efficiency
- the hubble constant - rate of expanion of the universe, thought to be about 51kps/megaparsec
- lambda - cosmic antigravity
- mu - the ratio of the proton's mass to the electron's mass
- N - the strength of the electrical forces holding atoms together divided by the gravity between them
- Omega - the ratio of the actual density of the universe to the critical density of the universe
- the photoelectric constant - the ratio of planck's constant to the electronic charge
- Pi - the ratio of the circumference of a circle to it's diameter
- h - Planck's constant
- Q - it determines how tightly galaxies and clusters of galaxies are bound together

A strange thing has occured. it now appears that alpha and mu had different values in the past, which has implications for quantum electro dynamics, and for physics generally. for example:

- The varience in mu has knock on effects for the strong nuclear force which binds atoms and quarks
- The varience of alpha has knock-on effects for the weak nuclear force which governs radioactive decay
- The varience of alpha has knock-on effects for the electromagnetic force which governs all electrical and magnetic interactions