What I wanted to know was this, what is the speed of light in beer?
Don't ask why I asked this question just accept the fact that I asked it.
It turns out that Wolfson Alpha does not know, Google does not no directly.
Had to do some serious searching but I am pleased to say i now know the answer !
It is 0.74 times the speed of light in a vacuum so about 137000 miles a second compared to 186000
Neat?
I think that the darker of heavier beer the speed will be even less but I don't have a clue how you would go about working that out.
I am just pleased that my question was answered.