If I understand Gene aright, he would ask that automobile speedometers be
graduated in metres per second rather than km/h.  He wrote me on 2002-07-13
at 13:53

>Joe,
>
>In defense of Bob Bushnell, neither his statements nor your statements
>are "nonsense" except your opinion that his statement on Wh is nonsense.
>
>In fact, on page 121 of the BIPM Brochure, we find that the joule is
>*defined* as the newton meter, not as the watt second, as you imply.
>
>The watt second, an equivalent but less fundamental form of the joule,
>and the watt hour, not even a coherent SI form, are not even mentioned
>in this CIPM Resolution of 1946.
>
>Contrary to your implication, Bob does not assert that the joule, the
>watt, and the watt second are exclusively for electrical applications.
>
>Bob's statements are clear.  The joule is preferred for all forms
>of energy.  However, Bob would "allow" the watt hour only for its
>traditional use; for the measurement of *electrical* energy.
>
>If I had the authority, I would declare the watt hour illegal by a date
>certain for any kind of energy bought or sold in interstate commerce.
>
>Gene.
>..........................................
>> Robert Bushnell wrote on July 12
>
>> >Madan; ... you tell Claire to give energy in units of TWH.
>> >
>> >This is wrong.  The watt hour is allowed only for electricity.
>> >
>> >Energy is given in multiples of joule...
>
>Joe Reid responded on July 12:
>> Nonsense!  The watt is the SI derived unit for all kinds of power -
>> mechanical, electrical or thermal.  Agreed that the joule is the SI
>> derived unit of energy and is equal to the watt second, again not
>> exclusively electrical.  The watt hour is a non-SI unit accepted for
>> use with the International System...

Joseph B.Reid
17 Glebe Road West
Toronto  M5P 1C8             Tel. 416 486-6071

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