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Monday, March 16, 2026
TopicThe Great Trigonometrical Survey of India

Topic: The Great Trigonometrical Survey of India

Chennai vs Bengaluru—where did the Great Trigonometrical Survey of India begin?

The British wanted to understand the length and breadth of the Indian peninsula. The answer was a 100-year-long survey that used triangulation to map vast distances.

Trigonometry may be schooltime misery, but it’s what first helped us see India right

Here's how trigonometry helped India's colonial rulers draw up the subcontinent's first map in the 19th century.

On Camera

Gulf conflict pushes Dubai diamond traders to eye Surat for rough stone auctions. But there are hurdles

Industry leaders say India’s complicated customs process and GST levies are deterrents for traders to come to Surat for auctions.

Supreme Leader Mojtaba, the man Iran must keep alive & the secret force ‘tasked with it’—all about NOPO

The Nirouyeh Vijeh Pasdaran Velayat, or NOPO, was the only force Ali Khamenei trusted.It was founded in 1991 and is more feared than the Revolutionary Guards.

Peaceful power transfers followed uprisings in India’s neighbourhood. It’s a sign of mature democracies

Rating democracies is a tricky business. I am only using the simple metric of who in the Indian subcontinent has had the most peaceful, stable, normal political transitions and continuity.