A 30-year-old woman's persistent stomach pain led to a shocking discovery: a giant hairball, or trichobezoar, filling her stomach. Doctors at Amrita Hospital surgically removed the mass, which had ...
Many people believe that the LED was discovered by US researchers working in the 1960s. In fact, Henry Round at Marconi Labs noted the emission of light from a semiconductor diode 100 years ago and, ...
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