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How was the speed of light measured || আলোর গতি কিভাবে মাপা হয়েছিলো || fact & fiction বাংলা || PJPAF
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Chapters

0:00 Prolouge
0:53 What is light
1:09 Value of light
1:45 Theory of Empedocles
2:28 Theory of Hasan Ibn Al Haytham
2:57 Why was the theory of Hasan not accepted
3:31 Experiment of Issac Beekman
4:04 Experiment of Galileo
4:41 Experiment of Ole Roman
6:54 Experiment Hyppolyte Fizeao
7:17 Experiment of Leon Foucault
7:28 Advancedment of technology
7:35 Theory of Rosa & Dorsey
7:47 The last eccepted value
8:31 Conclusion

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