On 8 Dec. 2020,?ÿ China and Nepal jointly released the Height of Mount Everest (Mt. Qomolangma)
as 8,848.86 meters on the IHRS (International Height Reference System). I for one can't wait to see the
mathematical write-up in some journal.
JOHN NOLTON
I'm sure it will be the height of reporting.
To the nearest four-tenths of an inch.?ÿ A bit on the sloppy side for surveying.?ÿ Just pointing out the obvious.?ÿ Did some poor sap have the privilege of shoveling snow and ice off of suspected high spots to get to the true surface??ÿ Did they shoot the highest spot on a moveable dirt clod?
Good article from the BBC, although I'm not sure about the rigor in this statement:
"The formulas they used calculate the height of a triangle by multiplying its base with its angles."
Or the research that went into this one:
"This time the Chinese surveyors used China's BeiDou navigation satellite system, which is believed to be a rival to the US-owned Global Positioning System, or GPS."
https://www.bbc.com/news/world-asia-55218443
?ÿ
Saw a terrific program years ago, maybe the National Geographic channel, about the original survey. Some of the theodolite towers still exist.?ÿ It was pretty amazing hearing about the amount of work it took to achieve?ÿ
Why not check with Google Earth.
@mathteacher?ÿ Who exactly believes BeiDou rivals GPS?
@jph?ÿ ?ÿYes, and one of the first heights was by a monk that smuggled a sextant in between his legs under his robe. Cool Show.
@acd-surveyor?ÿ ?ÿ Just did, and both China AND Nepal are wrong by 8 meters too high. The Chinese always overstate things.