The largest of the three Giza pyramids is known locally as Khufu and internationally as Cheops.The thermal scanning was carried out at all times of the day, including during sunrise, as the sun heats the structures from the outside, and then during sunset as the pyramids are cooling down.
The speed of the heating and cooling phases is being used to uncover “hypotheses” such as empty areas in the pyramids, internal air currents, or different building materials used.
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