How did a French engineer save the Great Pyramids from dismantling for building materials? Detailed answer

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How did a French engineer save the Great Pyramids from dismantling for building materials? Detailed answer

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How did a French engineer save the Great Pyramids from dismantling for building materials?

Louis Linant de Belfon, before becoming the chief engineer for the construction of the Suez Canal, commanded the construction of dams and the laying of irrigation canals on the Nile. To optimize the work, the ruler of Egypt, Muhammad Ali Pasha, suggested using a stone from the Great Pyramids. Belfon was against it, but he understood that in case of refusal, the pasha would hire another engineer. In order to save the Pyramids, he provided fictitious calculations, according to which it turned out that it would be cheaper to extract material from the quarries.

Authors: Jimmy Wales, Larry Sanger

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Space elevator test 06.09.2018

A team of Japanese scientists from the University of Shizuoka, as well as other organizations, is going to conduct the first experiment related to the idea of developing a "space elevator" - a device capable of theoretically connecting the Earth and a space station with a special cable, which in the future will open up new possibilities in bringing payloads to low Earth orbit, as well as the delivery of people.

This is the first time such an experiment will be conducted in space. Before scientists can begin to create a full-fledged "space elevator", they will have to solve many engineering and scientific issues related to the development of special, high-strength cables, with which the space elevator will rise into orbit. The experiment should take place in the coming days, writes Hi-news.

Within its framework, scientists want to use two ultra-compact cubesat satellites (dimensions 10x10 cm), which will be launched into orbit using the H-2V launch vehicle. The satellites will be interconnected using a 10-meter steel cable, on which an improvised blank will be installed, which will act as an elevator. With this set, the Japanese want to prove the reality of the "space elevator" theory.

The essence of the experiment is to stretch the same elevator along a cable 10 m long. The wire will be in limbo at this time. Cubesats, in turn, are needed in order to keep the cable taut. The "space elevator" will start its journey along the wire from the container inside which the launch vehicle will deliver the satellites into orbit.

It will be possible to monitor the movements of the "space elevator" using cameras installed on satellites. However, experts note that even if successful, the Japanese will not yet approach the end point of the "space elevator" project.

The launch of the H-2V carrier rocket with two satellites on board is scheduled for September 11.

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