🚀 go-pugleaf

Dear Ludwig,

    In thinking about the pepperoni vs bologna problem:  were the
conditions the same--I notice that the microwave is warm after warming a
cup of coffee for example.  Position also effects the heating in our
microwave.  In Pennsylvania dutch country ring bologna is a great deal
thicker than the pepperoni we have in our stores.  You mentioned that it
was the same.  If you cut the bologna then you had to remove the casing
which the pepporoni has on it.  Did you use the same thermometer and
measure the temperature at the same time after the oven went off?  I raise
these questions not to be critical of your activity but merely to describe
some variables other than the composition of the cylinders which might
effect some or all of the differences in temperature you observed.

    You suggest that the difference in the amount of ground bone which
attracts microwaves better than water.  I wonder if the difference is due
to a difference in average specific heat of the tubes.  You didn't report
room temperature but if we assume it at 25 celsius then the one tube
changed about 4 times more in temp. than the other.  If one is almost all
water then the specific heat is l and the other tube is about 1/4.  I
believe that fat or oil is about .5 so there are other variables
involved.....

    So under the same conditions, a glass of water will change half as many
degrees as a glass of oil or fat.  The same amount of heat is available but
it takes more heat energy to change water's temperature than the same mass
of oil.  Since oil is less dense than water, two glasses with the same
amount (volume) would show an even greater difference (100 ml of water =
100 gm but 100 ml of oil = about 90gm (I think)).

    So thanks for listening to my logic.  See you on line.


                        Kip Bollinger, pa@panet.mste.org