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Solar ship of Khufu

In Giza, archaeologist looked at the ship buried at the base of the Great Pyramid. They pushed the camera through a hole drilled in limestone slabs covering the chamber with the ship. The hole was made with a special drill which preserved the original air. The ancient Egyptians buried several ships in the neighborhood of the great pyramid or elsewhere.

Microwave

First domestic microwave oven was sold by Tappan. Microwave oven uses electromagnetic radiation with frequencies between 300 MHz and 300 GHz to heat or cook food. The radiation induces polar molecules (mainly water) to rotate. This produces the thermal energy. The discovery of microwave oven was a by-product of radar research in World War 2.

Anniversaries of the (in)famous