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	Topics Astronomy Atomic clocks Bridges Calculators Earth's magnetic field Electricity Engineering Engines Fluids Gravity Lightning Measurement and real-life Miscellany Nobel Prize winners Optics Particle physics Physics meets biology Physics meets Earth science Scientist biographies Semiconductors and computers Sound Spacecraft Theme park physics Thermodynamics Tides Units of measurement		Topic: Miscellany Diamond cut Total internal reflection is the key to giving well-cut diamonds their sparkle. Insolation Find the average number of hours of sunlight where you live, or anywhere in the world. Pointillism This 19th-century style of painting was popularized by artists such as Georges Seurat. See several examples of Pointillist paintings here. Pulsed magnets The world's most powerful magnets are made at the National High Magnetic Field Laboratory at the Los Alamos National Laboratory. Some are even designed to explode when used! Spintronics Using the spins of electrons to store information may be the next wave in microelectronics. The physics of clicky clack balls Also known as Newton's cradle, this popular desktop toy nicely exhibits conservation of momentum and energy. But as this website explains, the toy is not as simple as it appears.