# Correct mathematical notation for Volumetric Heat Capacity

1. Dec 23, 2015

### penderway

What is the correct notation for Volumetric Heat Capacity? I see it written both ways (Wiki for example). I'm pretty sure one is more correct but which is it?

(1) Btu/ft³·°F
or
(2) Btu/(ft³·°F)

2. Dec 23, 2015

### JorisL

Technically the second is more correct.

That is, we take that Btu/ft³·°F = ${Btu} \over {ft^3\cdot °F}$ while according to the standard mathematical rules it actually says Btu/ft³·°F = $\frac{Btu}{ft^3}\cdot °F$.
The second option avoids this possible confusion by using parentheses.

However when using units it often happens that you neglect this technicality, because you know what the units are supposed to say.

3. Dec 23, 2015

### penderway

Much appreciated.

4. Dec 24, 2015

### penderway

5. Dec 24, 2015

### JorisL

Sure, don't doubt yourself ;-)