Miller apparatus and prebiotic synthesis
Videonummer 11936715
| Miller-Urey experiment. This experimental apparatus was devised by scientists Stanley Miller and Harold Urey in 1953. It was designed to test the idea that conditions on the primitive Earth favoured the formation of organic compounds, such as amino acids, that enabled life to evolve. The experiment uses water, methane, ammonia and hydrogen to simulate Earth's early atmosphere. The experiment is enclosed in a loop, with one flask (bottom left) half-full of liquid sterile water simulating the ocean. Another flask (top right) contains a pair of electrodes and simulates the atmosphere. The liquid water is heated to make it evaporate and travel upwards. Sparks fired between the electrodes simulate lightning. The evaporated water is then cooled by a condenser, causing it to trickle back into the first flask. When this cycle was left to operate continuously for several days, Miller and Urey found several amino acids and other organic compounds now found in living organisms. For an unlabelled version of this animation, see K004/2025. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Biocosmos / Francis Leroy & Sempot Amaury |
| Modell-Rechte: | nicht erforderlich |
| Länge: | 38 Sekunden |
| Seitenverhältnis: | 16:9 |
| Restrictions: | - |
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