The first construction is a mini-model of the Giza pyramid and an artificial sunbeam moving on its top. The pyramid is made of mirrors that allows us to demonstrate that the 52-degree angled wall of the pyramid reflects the midday sun beams on the surrounding territory of the pyramid. In this area, along with the directly incident sunbeam, the reflected sunbeam makes the total radiation. This reaction creates a sharp temperature contrast with the cold center (the pyramid), and hot environment. Such distribution of temperature favors the formation of a cloud of specific shape which in turn stimulates the formation of a tornado.
During the experiment the light was switched off to make it clear how the sunlight reflected from the pyramid covers the outside area. See details in the book “Personal Tornado for Pharaoh’s Soul” (the second and third editions).
See the first construction on the figure.