Word: exit
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...machines. To test a bit of evidence whose chemical composition is unknown, investigators place it in a gas chromatograph--essentially a high-intensity oven--where it's vaporized. The resulting gas is funneled into a coil-shaped structure lined with chemicals that cause the components in the gas to exit at different rates. These components are then sorted by atomic weight and converted into a graph. Investigators then compare the readout with a reference library, determining what the evidence is made...
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