English. Соколова Е.В. - 12 стр.

signed the carcass for the American symbol — the Statue of Liberty, and four years
later there came the government contract for the famous Tower.
    When it was built, the Eiffel Tower, at 986 feet, was the tallest building in the
world. It was the tallest until 1930, when New York's Chrysler Building, sixty feet
higher, was built. Working with tall buildings, Eiffel had to study aerodynamics, and
became an expert on meteorology. Eiffel put forward many new principles on con-
struction of tall buildings which are still in use.

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                                Changes in the Calendar
    Studying the universe, early astronomers knew that the Earth orbits around the
Sun in 365.2422 days. But this number makes it difficult to plan a calendar. The first
person who tried to do this was Julius Caesar (100-44 ВС). Не asked his astronomer
to make what became known as the Julian calendar. Later Julius Caesar gave the idea
of a longer — leap year which can easily compensate for the extra 0.2422 of the day
in each" year. The Julian calendar was remade, and had a leap year every third year.
    The calendar which we use today was developed by the Roman Emperor Augus-
tus (63 ВС-14 AD), who in 8 ВС made one leap year every fourth year. Pope Greg-
ory X11I made some changes, and gave the world the Gregorian calendar, according
to which the century years can be leap years if they are divided by 400: 1800 and
1900 were not leap years, but 2000 will be.
    Will the calendar be remade, do you think?

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                   Another Mystery of the Ancient Pyramid

     Thinking of a key to the phenomenon of ancient knowledge, we should remember
the Great Pyramid of Cheops at Giza. Do you know its 'Surprises'? The perimeter of
the base divided by twice the height gives us “pi” (3.14159). The height, taken one
thousand million times equals the distance between the Earth and the Sun, Other pa-
rameters show the Earth's weight, and the four directions of the world. As for the Gal-
lery leading to the Pharaoh's burial chamber, it gives a clear view of the North Star.
     All these surprises are well-known to Egyptologists. But one, discovered in 1993,
is still a mystery.
     A German engineer R. Gantenbrink was hired to clean the narrow ventilation cor-
ridors in the King's Chamber of the Great Pyramid with the help of his robot. The ro-
bot, using its camera eye, found that the corridor ended in a tiny door, and that the
wall of the segment was polished well enough, and that a small gap exists at the bot-
tom of the door, but the camera could not peer through it.
     What could lie beyond that tiny door, too small for humans? Is there a hidden
chamber? What might it contain? No robot or man can answer these questions yet,
and scientists do not think it will be so easy in the near future.

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