Reply to post: Re: Theory?

Star's rosette orbit around our supermassive black hole proves Einstein's Theory of General Relativity correct

Jan 0 Silver badge

Re: Theory?

> originally 100% proof alcohol was concentrated enough that black powder would still ignite if soaked in the stuff

It's not "% proof", just proof or degrees/° proof, 100% alcohol is 175°, that's 75° over proof.

> Oh for the days

It's still not difficult to make your own black powder, 'though you can't walk into a chemists' shop like I did as a kid and walk out with three twists of paper containing charcoal, potassium nitrate and flowers of sulphur.

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