That scientific principle of diffraction of X-rays by crytals, discovered in 1913, by father and son William and Lawrence Bragg has made possible much of the...
An online poll identified X-ray crystallography as one of the top five most important innovations in science and technology from the last 100 years.
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Only one thing is impossible for God: To find any sense in any copyright law on the planet. Mark Twain
A notice displays information that explains nearby content. Often used to call attention to a particular detail.