Explain Stanley - Miller’s spark discharge apparatus experiment on the origin of life with a neat labelled diagram.

Explanation

In 1953, S.L. Miller, an American scientist created similar conditions in a laboratory scale relevance to early earth.s atmosphere. He created electric discharge in a closed flask containing `CH_(4), NH_(3), H_(2)` and water vapour at `800^(@)C`.
The flask was completely evacuated, boiling water led to the formation of water vapour. Water vapour was passed across spark discharge chamber connected to electrodes and filled with mixture of gases. Steam carrying the mixture of gases were allowed to condense and water containing organic compounds were allowed to accumulate in trap. Under such simulated conditions similar to early earth.s atmosphere, Miller observed the formation of amino acids.