Science
Researchers measure the gravity exerted by a 90 milligram object – Ars Technica
We’ve measured the pull between two gold spheres, each 2 millimeters across.
Enlarge/ The experimental setup.
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Gravity may feel like one of the most familiar forces, but it’s actually among those we understand least. We know our current model of gravity is inconsistent with quantum mechanics. It also fails to account for the phenomena we’ve termed dark matter and dark energy. Unfortunately, studying gravity is extremely challenging because it’s far and away the weakest of the forces. To get around this issue for the detection of gravitational…
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