Measuring the World
Surveying the Highest Peak, Part 3: GPS, Geoids, Snow, and the Modern Height of Everest
Why modern Everest measurements depend on GNSS, gravity, snow depth, reference frames, and a clear definition of height.
From the Index
Tag: Himalayas
Reports, histories, and working notes filed under this subject.
Measuring the World
Surveying the Highest Peak, Part 2: How Peak XV Became Mount Everest
The distant observations, calculations, corrections, and people behind the first accepted height of the world’s highest mountain.
Exploration & Places
Surveying the Highest Peak, Part 1: Building the Great Trigonometrical Survey
How baselines, giant theodolites, triangulation, and an immense field organization carried a geodetic network across India.