Yes, you're right, I wasn't thinking. The online source I used (http://wqa.org/Glossary/joule.html) said that a Joule was "107" ergs, when it meant "10^7". In the back of my mind I was puzzled over the fact that this wasn't a round number, but I thought I must have misremembered what an erg was.
Can't trust everything you find online, I guess.
Hal
> According to my usual on-line reference
> (http://calc.entisoft.com/scripts/UnitsCGI.Exe), the correct conversion
> here is 1 erg = 2.39 x 10^-8 calorie, not 10^-2. That gives you a
> temperature change of only 0.0001 degrees C.
>
> Billy Brown, MCSE+I