Nuclear resonance

A fluorite crystal containing atoms of the radioactive substance thorium-229, which was used to precisely measure the absorption spectrum of atomic nuclei at the PTB institute in Braunschweig, Germany. Previously, researchers had to capture several atomic nuclei in each experiment and test them with a single radiation frequency, which took a long time to achieve accurate measurements. The PTB measurement used a crystal in which about a quadrillion (a thousand trillion) atoms are embedded, allowing many tests to be performed simultaneously using precise laser beams. Credit: PTB

The dark side of time: A nuclear clock may reveal dark matter

A nuclear clock is the next big promise in measurement. Weizmann Institute of Science scientists have devised a method that allows us to harness tomorrow's technology to search for dark matter today.
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