The research examines changes of LCP with two definitions of photosynthetically active radiation (PAR: 400 -700 nm; ePAR: 400 - 750 nm) under two ...
6d
Science history: Carbon-14 is discovered, opening a window into past civilizations — Feb. 27, 1940
Martin Kamen and Samuel Ruben's discovery of the radioactive isotope carbon-14 in 1940 helped usher in a new era of dating ...
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