The equation of state from Jones–Wilkins–Lee is used to describe the detonation products of explosives. p = A ( 1 − − ω ω R 1 V ) exp ⁡ ⁡ ( − − R 1 V ) + B ( 1 − − ω ω R 2 V ) exp ⁡ ⁡ ( − − R 2 V ) + ω ω e 0 V