ROBERT BOYLE

    Robert Boyle 
                         "He observed that volume of a                                                              given mass of a gas is inversely
                                   proportional to its pressure                                                                  provided the temperature                                                                    remains constant."


Mathematically, Boyle's law can be stated as

P \propto \frac{1}{V}
or
 PV = k
where P is the pressure of the gas, V is the volume of the gas, and k is a constant.
The equation states that product of pressure and volume is a constant for a given mass of confined gas as long as the temperature is constant. For comparing the same substance under two different sets of condition, the law can be usefully expressed as

P_1 V_1 = P_2 V_2

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