Scientists

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Across
  1. 3. Quantam Theory
  2. 5. ElectroMagnectic Theory
  3. 6. teacherof science Presidency CollegeKolkatta
  4. 8. Origin of means by natural selection
Down
  1. 1. Electric Bulb
  2. 2. Big Bang Theory
  3. 4. A telescope named after him
  4. 7. Inventor of radio