Discovered 3500 years ago, it is a hieroglyphic called the holy book. This kind of writing is one of the oldest human writing, and it is often engraved on tombs, monuments, temple walls or stones of ancient Egyptians, so it is called "sacred writing".

It was not until 1822 that Jean-Francois champollion, a French scholar, first learned that Egyptian hieroglyphics, which had always been regarded as ideographic by form, originally had the function of phonetic notation, which became the key clue to interpret all Egyptian hieroglyphics.

2. The Sphinx

The pyramid is a huge triangular building made of big stones, which is the tomb of Pharaoh. Up to now, no one knows the reason for building this huge stone carving composed of the "Sphinx", which represents the wisdom and courage of the Pharaoh. Some people think that the "Sphinx" may be the patron saint of the pyramids, while others think that it is a symbol of the great civilization of ancient Egypt.

3. Mathematics

Mathematicians and geometricians in ancient Egypt have been able to calculate the areas of isosceles triangles, rectangles, trapezoid and circles. In addition, the Egyptians used the dig-and-fill approximation to obtain the area of a circle.

4. Astronomy

By observing the movement of the sun and Alpha Canis (Sirius, known as "Sopdet" in ancient Egypt, is the negative noun form of the verb "sharp"), they made a calendar, that is, the Coptic calendar. The ancient Egyptians set a year as 365 days, 12 months a year, 30 days a month, and the remaining 5 days were festivals. The practice of using the solar calendar in ancient Egypt was the earliest in the world, and this calendar is similar to what we use today.

5. Time

The ancient Egyptians divided the year into three seasons, each with four months. They also invented the water clock and sundial (that is, counting by the reflection of the sun), which divided the day into 24 hours.

6. The hieroglyphics created had a great influence on the later Phoenician letters, while the Greek letters were created on the basis of the Phoenician letters. In addition, the pyramids, the lighthouse of Alexandria, the Temple of Amon and other buildings reflect the superb architectural technology and mathematical knowledge of the Egyptians, and have also made great achievements in geometry and calendar.

References:

Baidu Encyclopedia-Ancient Egypt