News tagged with ball

It's Einstein versus Newton again

A simple bouncing ball has reignited a debate long thought settled: whose landmark physics theory is correct – Albert Einstein’s general relativity theory or Sir Isaac Newton’s theory of gravity?

Jun 13, 2012 3.1 / 5 (18) 9

Discovery of the Musket Ball Cluster

(Phys.org) -- Using a combination of powerful observatories in space and on the ground, astronomers have observed a violent collision between two galaxy clusters in which so-called normal matter has been wrenched ...

Apr 12, 2012 4.8 / 5 (4) 5 | with audio podcast

BP oil not degrading on Gulf floor, study says

(AP) -- Tar balls washed onto Gulf of Mexico beaches by Tropical Storm Lee earlier this month show that oil left over from last year's BP spill isn't breaking down as quickly as some scientists thought it would, university ...

Sep 20, 2011 5 / 5 (3) 3

Divot resistance in golf course turfgrass

Golf courses, known for their calm scenic views and precise grass patterns, take daily abuse. Divots created by golf strokes are a common occurrence, and can be a costly problem for golf course maintenance operations. Although ...

Aug 10, 2011 not rated yet 0