Historical Discoveries

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Across
  1. 5. Uranium property.
  2. 9. Boson particle.
  3. 11. Genetic code.
  4. 12. Tiny viewer.
  5. 13. Charged particle.
  6. 15. Noble gas.
  7. 17. Star-gazing tool.
  8. 19. Newton's force.
  9. 20. Diabetes treatment.
  10. 22. Essential gas.
  11. 23. Industrial power.
Down
  1. 1. Darwin's theory.
  2. 2. Imaging rays.
  3. 3. Eradicated virus.
  4. 4. Smallest unit.
  5. 5. Wireless transmission.
  6. 6. Immunization method.
  7. 7. Neutral particle.
  8. 8. Power discovery.
  9. 10. Star system.
  10. 14. Physics theory.
  11. 16. Fossil find.
  12. 18. Antibiotic fungus.
  13. 21. Light beam.