>> And not constant either, at that. > Bugger. > http://www.everything2.com/index.pl?node_id=29831&lastnode_id=11221 I stand corrected as I was being imprecise. I was referring to a) the speed of light is depending an material, and b) the speed of light seems to not be constant over time even in a given material.
However, the *definition* of a lightyear certainly *is* constant so you are correct. Karsten -- GPG key ID E4071346 @ wwwkeys.pgp.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346 - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
