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Excitation and deexcitation: Day 1, P1
Atoms can be excited
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When lasers were invented in the 1960s, no one realized how universal they would become in our everyday lives. Now, however, they are used to read disks in MP3 players, to read barcodes for purchases and to print in laser printers. But how do lasers work? In this activity you will learn how exciting atoms and then de-exciting them can produce light that can then be used in our everyday technology.
(get an illustration? We could also choose a different type of machine if this is too close to the TV one.)
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