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List of Scientific Inventions and Discoveries Traditional GK
| Sl. No. | Invention | Inventor |
|---|---|---|
| 21. | Television | John Logie Baird (Britain) |
| 22. | Telephone | Alexander Graham Bell (USA) |
| 23. | Steam Engine | James Watt (Scotland) |
| 24. | Radio | G. Marconi (Italy) |
| 25. | Microscope | Z. Janssen (Netherlands) |
| 26. | Logarithm | John Napier (Scotland) |
| 27. | Electric Lamp | Thomas Alva Edison (USA) |
| 28. | Electromagnet | William Sturgeon (England) |
| 29. | Electromagnetic Induction | Michael Faraday (Britain) |
| 30. | Elevator (lift) | Elisha G. Otis (USA) |
| 31. | Talking Film | Warner Bros (USA) |
| 32. | Gramophone | Thomas Alva Edison (USA) |
| 33. | Fountain Pen | Lewis E. Waterman (USA) |
| 34. | Motor Car (Petrol) | Karl Benz (Germany) |
| 35. | Motor Cycle | Edward Butler (Britain) |
| 36. | Radar | Dr A. H. Taylor and L. C. Young (USA) |
| 37. | Revolver | Samuel Colt (USA) |
| 38. | Submarine | D. Bushnell (USA) |
| 39. | Telegraph | Samuel B. Morse (USA) |
| 40. | Radioactivity | Antoine-Henri Becquerel (France) |