If gravitational pull can trap light then what about in electromagnetic forces
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Answer:
Controlling the motion of charged par- ticles by electrornagnetic fields is now a well mastered technique. ... However, during these last three years, several atomic traps have been demonstrated, based either on the action of an inhomogeneous static ma- gnetic field (magnetic trap) or of a laser field (light trap).
Explanation:
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Why is light affected by gravity if photons are massless? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better understand the world.
Answer by Matthew Geleta, PhD math (Cambridge); MSc maths (Oxford); BSc Hons math-phys, on Quora:
Why is light affected by gravity if photons are massless?
This is a wonderful question … in the first instance, it’s answered by Einstein’s theory of general relativity. (Spoiler alert, light travels along geodesics, which are approximately straight lines in most circumstances that humans encounter in everyday life, but are curved by gravity). It’s also interesting because there is some sense in which light does have “mass” (and therefore should be influenced by gravity… read