To get that perfection, the engineers must have had to measure it repeatedly during construction.
And the way you'd measure it is from the four corners of the base.
Well, if you got a ramp spiraling up from the base of the Pyramid, those corners would be buried by that ramp during construction.
Well, who says the ramp has to be on the outside of the Pyramid?
And now we get to the latest idea.
If the ramp were on the inside of the Pyramid, the corners at the base would be exposed so the engineers could do their measurements while they were building.
Well, an architect named Houdin has spent a few years working on making computer models of the building of the Pyramid.
And what Houdin believes is that an exterior straight ramp was used to construct the bottom third of the Pyramid, this ramp would have been fairly short. It probably rose less than 50 meters.
Then the rest of the Pyramid was constructed using an internal ramp that spiraled around the inside of the Pyramid.
But how can we test this idea?
Well, there are several ways to look inside the Pyramid.
One is called microgravimetry.
Microgravimetry is a technique that's used to detect voids inside a structure.
You can then take the data and generate an image that shows any empty spaces in the interior.
Well, in 1986, French scientists completed a microgravimetric survey of the Pyramid.
And one of the images they produced showed an empty spiral-shaped space inside it.
The shape of that space corresponds exactly to what Houdin thought the ramp would look like.
I think Herodotus would be convinced.
We might very well be at the end of centuries of guessing.
What is the lecture mainly about?
According to the professor, what is the main argument against the theory that the stone blocks of the Great Pyramid were lifted into place with cranes?
Why does the professor mention a mountain road?
Why does the professor talk about the accuracy of the proportions of the Great Pyramid?
The professor discusses different methods the Egyptians may have used to build the Great Pyramid. For each method listed below, place a check in the box that show with whom it is associated.
What is the professor's view of the Houdin's theory?