Gravity May Leak Into Hidden Dimensions, Physicists Hunt for Tiny Black Holes

The ADD hypothesis (Arkani-Hamed, Dimopoulos, Dvali, 1998) suggests gravity looks weak because it spreads into extra microscopic spatial dimensions. Physicists propose searching for tiny black holes, where gravity becomes strong at extremely small scales, to test the idea.

• Electromagnetism beats gravity in an atom by a factor of 10^39
• The ADD hypothesis was proposed in 1998 by three physicists
• Extra dimensions would be microscopic, not infinitely large
• Test: hunt for tiny black holes at small scales