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Author Topic: The Great Trigonometrical Survey of India  (Read 596 times)

freakazoid

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The Great Trigonometrical Survey of India
« on: April 12, 2018, 07:46:07 AM »
Just learned about this interesting event in India's history.
First learned about it when watching this video by Practical Engineering about how land surveying works, those devices are called a theodolite by the way, https://www.youtube.com/watch?v=SPCewaAfqPA Also some tips on how to do land surveying yourself on your own land.
In it he mentions The Great Trigonometrical Survey of India. Besides mapping the interior India, they were also looking into what the shape of the earth was. In this video it get's explained. https://www.youtube.com/watch?v=pOYQQMZfeQs Also during this time is when they discovered Mt. Everest, and that it was the tallest mountain. There is a small Wiki on it, https://en.wikipedia.org/wiki/Great_Trigonometrical_Survey
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Hawkmoon

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Re: The Great Trigonometrical Survey of India
« Reply #1 on: April 12, 2018, 11:37:18 AM »
I love how he carefully laid out a grid with the flags, and then took sights everywhere except on the grid.
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