Helium-neon lasers may be little more than glorified ... through the partial mirror to form a coherent, monochromatic laser beam. By contrast, an open-cavity laser has a gas-discharge tube sealed ...
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Interesting Engineering on MSNUS scientists forge world’s most powerful electron beam with 5 times greater forceScientists have taken a giant leap forward in particle physics by creating an electron beam with five times more peak current than any similar beam ever produced. This major achievement addresses a ...
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