Answer: NEWTONSCRADLE
NEWTONSCRADLE is a crossword puzzle answer that we have spotted 2 times.
Referring Clues:
- 5-ball desktop toy
- Gizmo often with five balls that demonstrates conservation of momentum and energy
Last Seen In:
- New York Times - July 11, 2013
- King Syndicate - Eugene Sheffer - March 30, 2013
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