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Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University

Miller-Urey Second Experiment

Caption: The apparatus used for Miller's "second," initially unpublished experiment. Boiled water (1) creates airflow, driving steam and gases through a spark (2). A tapering of the glass apparatus (inlay) creates a spigot effect, increasing air flow. A cooling condenser (3) turns some steam back into liquid water, which drips down into the trap (4), where chemical products also settle.

Credit: Ned Shaw, Indiana University

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