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The Hindu

National / The Hindu

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Scientists plan to build a graviton detector. Why is it so hard?

Gravity is one of natures four fundamental forces; the others are electromagnetism and the strong and weak nuclear forces. And gravity is 1 billion billion billion billion times weaker than the electromagnetic force, the next strongest. This is why a fridge magnet can overcome the gravitational pull of the entire earth to pick up a paperclip

20 Jan 2026 5:30 am