Mount Everest : Mystery to Measurement of Height and Name

本站添加: 2026-05-11

[00:00:00]In the early 19th century, the Himalayas [music] were largely seen as an imposing, impassable wall of rock and ice. To European mapmakers, [music] the undisputed roof of the world was a mountain called Kangchenjunga.

[00:00:13]But the British Empire wanted exact [music] measurements. In 1802, they launched the Great Trigonometrical Survey of India, an [music] ambitious, decades-long project to mathematically map the entire Indian subcontinent.

[00:00:27]There was an enormous political hurdle, though.

[00:00:30]>> [music] >> The highest peaks lay deep within the borders of Nepal and Tibet, and both nations [music] were strictly closed to foreign explorers.

[00:00:37]These restrictions forced the expedition to rely entirely on trigonometry.

[00:00:41]>> [music] >> To map the mountains, surveyors had to calculate distances and elevations across national borders >> [music] >> from hundreds of miles away.

[00:00:49]Denied entry, the survey teams adapted.

[00:00:52]They set up observation stations in neighboring territories, forcing [music] them to sight the mountains from more than 200 km away. Their primary tool for this [music] was the theodolite, an advanced optical instrument used to measure horizontal and vertical angles across vast distances. [music] In November 1847, Andrew Waugh and his team noticed a massive, unmapped, distant [music] peak, later designated Peak 15.

[00:01:19]Proving its precise height required years of complex [music] formulas to account for the Earth's curvature and the way light bends through the atmosphere.

[00:01:28]Peak 15 entered the historical record as a blurry anomaly caught in a glass lens.

[00:01:33]>> [music] >> The initial discovery was a product of calculation rather than physical exploration.

[00:01:38]>> [music] >> In 1852, the investigation moved to an office in Calcutta.

[00:01:44]Radhanath Sikdar, a 19-year-old Indian mathematical prodigy, was tasked with processing the data. [music] Sikdar was employed by the survey as a computer, a person whose literal job was to manually calculate the mountains of raw trigonometric data the field [music] team sent back.

[00:02:01]Sitting hundreds of miles from the Himalayas, Sikdar finalized his work.

[00:02:05]>> [music] >> His calculations proved that Peak XV was definitively higher than Kangchenjunga.

[00:02:11]>> [music] >> This chart shows the heights of the area's tallest peaks.

[00:02:15]Sikdar's math pinned Peak XV [music] at exactly 29,000 ft. Worried the public would think such a round [music] number was a lazy guess, Waugh added 2 ft, officially recording it at 29,002.

[00:02:28]The ultimate physical truth of the planet had been definitively proven in the abstract through the sheer force of human mathematics.

[00:02:35]>> [music] >> While new to the British, the mountain already had a history. The local Tibetan and Nepali populations had centuries-old names for it, >> [music] >> including Chomolungma and Sagarmatha.

[00:02:46]Despite these existing names, [music] Waugh chose to ignore local tradition.

[00:02:50]He formally christened Peak XV after his retired predecessor at the survey, >> [music] >> Sir George Everest. Sir George Everest actually protested this, arguing the locals couldn't pronounce his name, and that he had never even seen the peak.

[00:03:02][music] Meanwhile, Radhanath Sikdar, the man who mathematically discovered it, [music] was largely forgotten.

[00:03:09]With a name and a set of coordinates now fixed [music] on the map, the survey's data provided a concrete objective for the first mountaineers.

[00:03:18]By 1921, the [music] quest to reach the top of the world had officially begun.

[00:03:23]The first British [music] reconnaissance featuring climbers like George Mallory set out to close the 200-km gap.

[00:03:32]With Nepal's borders closed, the team approached from the north, [music] navigating through completely uncharted Tibetan territory.

[00:03:39]The logistics [music] were staggering.

[00:03:42]The team hired Sherpas and loaded supplies onto yaks for a grueling 480-km march starting out in British India just [music] to find the true base of the mountain.

[00:03:52]After weeks of hiking, they reached the Rongbuk Glacier.

[00:03:56]For the first [music] time, explorers stood at the true physical base of the mountain they only knew as a number. The climbers had stepped off the map and into a lethal environment [music] where safe, distant observation was no longer possible.

[00:04:10]The sterile figure [music] of 29,002 feet offered no warning about the physical toll of extreme altitude.

[00:04:18]>> [music] >> To survive the thinning air, the team spent weeks ascending and descending just to adjust their bodies to [music] the height.

[00:04:25]As Mallory and his team scouted the area, they realized the North Face and West Ridge were nearly impossible to scale, leaving [music] the North Col as their only viable route to the summit.

[00:04:36]By late September, the conditions at 7,000 meters were violent. [music] The team huddled in flimsy, makeshift shelters while extreme gales threatened to tear them off the ice.

[00:04:46]>> [music] >> The 1921 expedition didn't reach the summit, but they successfully mapped the critical North Col route, providing [music] the essential geographic knowledge for every future attempt. The identification of the world's highest peak was a dual achievement, born [music] in the brilliant mathematics of an Indian clerk and confirmed by the physical endurance of the first [music] climbers to touch its ice.