Dear Pat
According to this page it looks as though the joule was adopted into SI in
1960. It apparently had previously been adopted by the IEC in 1889, the year
of Joule's death (maybe named in honour because of that).
http://www.sizes.com/units/joule.htm
Regards
Phil Hall
----- Original Message -----
From: "Pat Naughtin" <[EMAIL PROTECTED]>
To: "U.S. Metric Association" <[email protected]>
Sent: Sunday, January 08, 2006 12:55 AM
Subject: [USMA:35601] When was the joule introduced to SI?
Dear All,
Can anyone give me the definitive date that the joule was introduced into
the SI as the unit for energy. I suspect that it was at the same time as the
newton, but I¹m having trouble finding the right reference.
I have searched the BIPM web site but with no luck.
Cheers and thanks,
Pat Naughtin
Geelong, Australia
