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At 04:41 PM 1/1/2009, you wrote:
More important than a wattmeter is a precise method of turning the heateron
and off. RTP uses the Vernier pulser module. You really want studentsto
be able to compare change in temperature with the number of pulses ofheat.
muchFrom the point of understanding, knowing the exact amount of energy is
less important. And as mentioned before, just using Styrofoam cups makes
the process almost adiabatic.
John M. Clement
Houston, TX
Forgive me for wondering how knowing that there were x pulses of
unspecified length involved in heating a sample is superior to knowing
that
w watts were supplied for t seconds. Is this a case of less is more?
Brian Whatcott Altus OK Eureka!
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