Important Inventions and their Inventors with Funny Tricks|| SSC CGL,CPO,CHSL,Railways NTPC,IBPS etc
Автор: Altruistic Education 2.0
Загружено: 2021-01-20
Просмотров: 14403
Описание:
1. Calculating machine – Pascal
2. Adding machine – Pascal
3. Electric Iron – H.W. Seeley
4. Photography – W.H. Fox Tablot
5. Radio – G. Marconi
6. Fountain Pen – LE. Waterman
7. Printing Press – J. Gutenberg
8. Bicycle – K. Machmillan
9. Ball-point pen – C.Biro
10. Jet Engine – Sir Frank Whittle
11. Refrigerator – J. Harrison and A. Catlin
12. Revolver – Samuel Colt
13. Rubber – Charles Goodyear
14. Safety Pin – Walter Hunt
15. Tank – Sir Ermest Swington
16. Telephone – Alexander Graham Bell
17. Telescope – Hans Lippershey
18. Transistor – Bardeen, Shockley
भूल नह ीं सकते एक बार देखने के बाद
#GKtricks
#Funny
#Inventions
#Inventors
#Important
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