КТО ПЕРВЫМ ИЗМЕРИЛ ЗЕМЛЮ?Первое при

КТО ПЕРВЫМ ИЗМЕРИЛ ЗЕМЛЮ?
Первое приблизительное определение размеров земного шара
более 2 тыс. лет назад сделал древнегреческий ученый, хранитель
Александрийской библиотеки Эратосфен Киренский. Он заме-
тил, что в городе Сиене (современный Асуан), расположенном к
югу от Александрии, 22 июня полуденное Солнце освещает дно
самых глубоких колодцев, а в Александрии в этот же день солнце в
полдень не доходит до зенита и предметы дают тень. Измерив,
насколько полуденное солнце в Александрии отклонено от зенита,
он получил величину, равную 7°12', что составило 1/50 окружнос-
ти. Из чего он справедливо заключил, что Сиена отстоит от Алек-
сандрии на 1/50 окружности Земли. Для вычисления длины окруж-
ности земного шара оставалось измерить расстояние между Алек-
сандрией и Сиеной, а затем умножить его на 50. Единственным
доступным Эратосфену «прибором» для измерения такой боль-
шой дистанции был верблюжий караван. Зная, сколько времени
верблюды тратят на переход от Александрии до Сиены, ученый
определил, что эти города отстоят друг от друга на расстоянии
5000 египетских стадий (около 800 км). Окружность же всей пла-
неты в 50 раз больше, она равна примерно 40 тыс. км. Теперь
Эратосфен мог без труда вычислить радиус Земли — согласно его
расчетам, радиус Земли оказался равным 6311 км. Это явилось
первым и довольно точным представлением о размерах нашей

Результаты (английский) 1:

WHO FIRST MEASURED THE EARTH?First the approximate determination of the size of the globemore than 2 thousand. years ago did the ancient Greek scholar, curatorLibrary of Alexandria, Eratosthenes of Cyrene. He replacedthat in Syene (modern Aswan), theSouth of Alexandria, 22 June midday sun illuminates the bottomthe deepest wells, and in Alexandria on the same day the Sunnoon does not reach the zenith and provide shade. Measuring,as far as the midday sun in Alexandria declined from Zenith,He received an amount equal to 7° 12 ', which amounted to 1/50 district-TI. What he rightly concluded that Siena is Alec-sandrii on 1/50 Land circumference. To calculate the length of the property-activities of the globe was measured the distance between Alec-sandriej and Siena, and then multiply it by 50. The onlyaccessible Èratosfenu "device" to measure such pain-do great distance was a camel Caravan. Knowing how much timethe camels spend transition from Alexandria to Siena, scientistdetermined that these cities apart from each other at a distance5000 Egyptian stages (about 800 km). Circle the entire PLA-NetA in 50 times more, it is about 40 thousand. km. NowEratosthenes could easily calculate the radius of the Earth — according to hiscalculations, the Earth's RADIUS is equal to 6311 km. This was athe first is an accurate representation of our

Результаты (английский) 2:

Who was the first to measure the Earth?
The first approximate determination of the size of the globe
for more than 2 thousand. years ago did the ancient Greek scholar, curator of
the Library of Alexandria Eratosthenes Kirensk. He substituted
methyl, in the city of Siena (modern Aswan), located to the
south of Alexandria, June 22 midday sun illuminates the bottom of
the deepest wells, and in Alexandria on the same day in the sun
at noon does not reach the zenith and objects provide shade. Measuring,
as the midday sun in Alexandria has been rejected from the zenith,
he received an amount equal to 7 ° 12 ', which amounted to 1/50 of circles
minute. From what he rightly concluded that Siena is separated from the Alexander
Sandra 1/50 circumference of the earth. To calculate the length of the circumference
of the globe was to measure the distance between the Alexander
Sandra and Siena, and then multiply it by 50. The only
available Eratosthenes "instrument" to measure such a large
distance Scheu was a caravan. Knowing how much time is
spent on camels crossing from Alexandria to Siena, the scientist
determined that these cities are separated from each other at a distance of
5,000 Egyptian stages (about 800 km). The circumference of the same whole plan
nety 50 times more, it is about 40 thousand. km. Now
Eratosthenes could easily calculate the radius of the Earth - according to his
calculations, the radius of the Earth turned out to be 6311 km. This was
the first and a fairly accurate idea of the size of our

Результаты (английский) 3:

Who are the first manage chronic Land?
the first approximate definition the size of the globe
more than 2 thousand years ago made a Greek scholar, custodian
Alexandria Library Эратосфен special accent. He comments
, modus operandiThat is in the city Siena (modern Aswan), which is located to the
south of Alexandria, 22 June largely unregulated industry where training the Sun illuminates the bottom
the most deep-wells, as well as Alexandria in the same day the sun
At noon does not reach the zenith and objects give a shadow. By measuring,
how the sun largely unregulated industry where training in Alexandria rejected from zenith,
he received value, equal to 7 ° 12 ', which was 1/50 окружнос-
t. From what he rightly concluded,