Why our understanding of gravity fails at the microscopic scale
In short: We can map the orbits of planets with precision, but we struggle to explain how gravity behaves at tiny distances. This video explores the limitations of Newton's laws and the search for new physics in the gaps between atoms.
While Newton's law of universal gravitation works perfectly on solar system scales, our knowledge falters at microscopic and atomic lengths. Scientists are currently pushing the boundaries of measurement to see if gravity deviates from the inverse-square law at very short distances.
Current research involves high-precision techniques like torsion balance experiments and zeptonewton force sensing using nanospheres in optical lattices. These efforts aim to detect screened interactions associated with dark energy or other phenomena occurring below the 100 μm length scale.
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- Summary by Intellect · source: Our Ignorance About Gravity
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