ANYONE who has been up a hill will be familiar with trig or triangulation points. In Britain, they are usually marked by trig pillars made from concrete or stone and about four feet in height. These ...

On 18 April 1936, a group of surveyors gathered around a white concrete pillar in a field in Cold Ashby, Northamptonshire, and began the retriangulation of Great Britain. Ordnance Survey (OS) is ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Yeah, a lot of the information people have — and it's very good information — but a lot of it's kept in ...

CBSE Mind Map for Class 10 Maths Chapter 9: Revision is the most essential part of the board exam preparations. It helps you strengthen your understanding of the concepts and identify any gaps in your ...

Chennai, then Madras, 1819. Syed Mir Mohsin Husain, a jeweller from Arcot, was working in the store of his employer, George Gordon, when some British military officials stopped by with a strange ...