How did the ancients measure the altitude of Mount Everest?

The ancients used it? Sun shadow method? Measure the height of Mount Everest. What is this? Sun shadow method? ? The so-called sun shadow method is actually to wait until the length of the shadow is the same as the real thing in one day, and then measure the length of the shadow to know the length of the real thing. So how do you know that the shadow of time is as long as the real thing? It's simple. You just need to find a short object and measure its own length and shadow length. Can you do it when its shadow length is consistent with its height? Sun shadow method? The moment of measurement. For example, a person's height 1.8 meters. When his shadow reaches 1.8 meters long, the length of the shadow is his height.

The same theory, the same method, measuring the length of the shadow of Mount Everest can know its height! How is that possible? Will it be too much trouble? How to measure such a long distance? Wait, these questions are actually not problems. Because measuring this world-class peak, especially in closed ancient times, Mount Everest and? Tianzhu? It makes no difference. Therefore, the accuracy of measurement should not be too high, just know a rough idea.

What if the sun sets in the west and the shadow moves? In fact, until that moment, we measured the past inch by inch from the bottom of Mount Everest, and no one was interested. Instead, people usually use the approximate conceptual distance to make a general judgment. For example, if a place is two kilometers away from Mount Everest, it can be roughly judged that it is two kilometers long. Similarly, the distance near the top of the shadow, judging how far the local area is from Mount Everest, and then slightly estimating the unreasonable place, you can get an approximate height of Mount Everest.

Generally speaking, although this method is very rough, nothing can accurately measure the height of this mountain in ancient times, so it is enough to roughly calculate the height and have a satisfactory statement.