Draft:What is the Fazian's tricks to find the circumference of the earth discovered by Fazle Rabbi ?
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Last edited by Qwerfjkl (bot) (talk | contribs) 26 days ago. (Update) |
What is the Fazian's tricks to find the circumference of the earth discovered by Fazle Rabbi ?
About 2000 years ago, the Greek mathematician Eratosthenes (276-195 BC) proved that the Earth is round and measured its circumference. He observed that on a particular day at Bhardupur the sun's rays fell directly on the well which was located at Syene (present day Aswan). But on the same day of the year at the same time in Alexandria he set up a staff. It was seen that there was a shadow. The sun's rays did not fall vertically there, but diagonally. As measured, the rays were incident at an angle of 7.2° to the stick. He then measured the distance on foot from Alexandria to Syene. which was 800 km. So the circumference of the earth is then measured = 800/7.2°×360° = 40,000 km.
Now I will show fazian's tricks that l discovered and how I measure the circumference of the earth. So let's begin. Put a stick perpendicular to the surface. Then shine on it using sunlight during the day and then put another stick in the direction directly where the shadow is or directly opposite. Then first find the height of a stick. Then determine the shadow distance. Then find the hypotenuse using the Pythagorean theorem. Then determine Sin^(-1) (Orthogonal/hypotenuse). At the same position, then at the same time, find the smallest angle produced by the other stick and such Orthogonal and hypotenuse. The work should be done at the same time. In this case one must be greater than the other. Again the shadow of the two sticks will be in the same direction. After determining all these values in the following formula, the circumference of the 🌎 earth will be found =(360×distance between two sticks)÷(Determined larger angle- smaller angle)
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