How do scientists know the nutrients and other substances in food?

Take home message

Scientists can detect amounts as small as one part in a trillion.

1,000 = one thousand
1,000,000 = one million
1,000,000,000 = one billion
1,000,000,000,000 = one trillion


Between now and 30,000 BC, there have been 1 trillion seconds.  Scientists can now detect amounts as small as one of those seconds.

Background

The following are examples of some of the techniques used to measure the nutrients in food:


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