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Across 4. Quantum _______. 6. "God does not _______ _______ with the world." 11. Uncertainty _______. 13. Einstein supported two social movements, _______ and _______. 15. Einstein was born in this country. 21. City where Einstein spent much of his youth. 22. President _______ receieved a letter concerning the possible development of an atomic bomb.

Down 1. Einstein won the _______ Prize in Physics in 1921. 2. City of Einstein's birth. 3. Instrument played by Einstein. 5. When _______ came to power, Einstein left Germany for the United States. 7. "On the _______ of Moving Bodies," Einstein's third major paper. 8. Planck's _______. 9. According to Einstein, the only source of knowledge is _______. 10. Location of the Kaiser Wilhelm Institute for Physics. 12. First name of Einstein's first wife. 14. Einstein's chief early patron was _______ _______. 16. Einstein received his doctorate from the University of _______. 17. Brownian _______. 18. A light particle is called a _______. 19. Age at which Einstein began to talk. 20. Unified _______ theory.