Home » Do you know » Do you know “Measuring the earth’s diameter”.

Do you know “Measuring the earth’s diameter”.

Measuring the earth’s diameter

Brahmagupta (597-668 AD), the mathematician and astrologer from Rajasthan, who was head of the astronomical observatory at Ujjain during his time, is recognised by history for a variety of reasons. For one, he authored the ‘Karana Khandakhadyaka’ – a book on astronomical calculations, and the Brahmasphutasiddhanta’ (taken by the caliph of the Abbasid, Al Mansur, to Baghdad in the 8th century).

Do-you-know

In 628 AD, he was the first to recognise gravity as a force of attraction. He believed that “bodies fell toward the center of the earth in proportion to their weight, just as the nature of water is to flow.” Brahmagupta described this gravitational pull of weight in Sanskrit as ‘gruhtvaakarshan’.

Contrary to popular belief that credits Bhaskaracharya as being the first to introduce the concept of zero, it was in fact Brahmagupta who established the basic mathematical rules for dealing with zero1 +0= 1:1 – 0=0:1 x 0 = 0.

He used this mathematical theorem as far back as the 7th century AD to measure the earth’s diameter getting to a figure of 7905 miles, which is amazingly close to today’s calculation of 7918 miles!

Related posts:

Why do cats and dogs have fleas? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
Why do hippos wallow in the mud?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9,...
General Knowledge
GK Question "Why Do People Have Different Coloured Skins?" general knowledge book English 2021 curre...
General Knowledge
Do you know "Pune supercomputers among world's fastest"? 
General Knowledge
Why do peacocks display their feathers? Complete General Knowledge Question and Answer for Class 6, ...
General Knowledge
Why did pyramids have temples in them? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
Why is America called Uncle Sam? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
Why does a top spin? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
Which is the biggest polar mammal? Complete General Knowledge Question and Answer for Class 6, 7, 8,...
General Knowledge
GK Question "How An Automobile Runs With Gasoline?" general knowledge book English 2021 current affa...
General Knowledge
Do you know “Languages in India: losses and gains in 50 years”.
Do you know
When was plastic made first? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
What makes the planet Saturn special? Complete General Knowledge Question and Answer for Class 6, 7,...
General Knowledge
What did small dinosaurs feed on? Complete General Knowledge Question and Answer for Class 6, 7, 8, ...
General Knowledge
Do you know “An introduction to one of the translated poems reads”.
Do you know
Can echoes travel through water? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
What is conservation? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 an...
General Knowledge
What is the universe made up of? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
GK Question "How A Submarine Manage To Stay Under Water?" general knowledge book English 2021 curren...
General Knowledge
When was coffee brewed for the first time? Complete General Knowledge Question and Answer for Class ...
General Knowledge

About

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*

This site uses Akismet to reduce spam. Learn how your comment data is processed.