# Charles' Law

Now we know:  (P_1\ \ V_1)/T_1=(P_2\ \ V_2)/T_2

and we know Charles' law = Pressure constant

If we choose ONE for the value of P

(NOTE: It doesn't really matter what value you choose, they will cancel each other out being the same)

then  (1xxV_1)/T_1=(1xxV_2)/T_2

is the same as

V_1/T_1=V_2/T_2

This is Charles' law