Miller and Urey Experiment: Stanley Miller (1953), a graduate student of Harold C. Urey designed an apparatus for simulating conditions prevalent on earth at the time of abiogenic evolution of organic substances. The apparatus had a spark chamber with two electrodes (for simulation of lightning), a flask for boiling (simulation for evaporation and circulation) and a condenser (simulation of raining and Haldane’s soup). A control apparatus was also prepared but without electrodes in the spark chamber. Miller used a mixture of methane, ammonia, hydrogen and water. The mixture was exposed to electric discharges, followed by condensation and then boiling. It … Continue reading Miller and Urey Experiment