# [time-nuts] Mass vs BTU Function

J. Forster jfor at quik.com
Thu Jan 27 20:47:05 UTC 2011

```The heat capacity of an object is the "Heat Capacity" = M * Cp

M = Mass
Cp = Specific Heat (at constant pressure)

M = Vol * SG

SG = Specific Gravity ( = density/density of water)

So, Heat Capacity = Vol * SG * Cp

If you want to know how much heat is required to change tempo:

Heat = Vol * SG * Cp * (delta T)  - all in same unit system of course.

-John

===================

> List,
>
>
> If one has a given cube, say 2 x 2 x 2 inches.  And one has the choice of
> aluminum, copper, or lead (just for an example).  Will each store or hold
> the same amount of BTUs or does the density make a difference?
>
> IF the density makes a difference, can someone give me the approximate
> difference?
>
> The practical end of this question is consideration of thermal mass
> surrounding an oscillator,
>
> TIA
>
> Perrier
>
>
>
>
>
>
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```