He calculated that the circumference (圆周) of the Earth was 28,600 miles ( 46,000 kilometers). Actually, The true size of the Earth is 25,000miles (40,000 kilometers ).Eratosthenes's measurement was wrong, but it was very close to the truth.For many centuries after Eratosthenes lived,...
29.C,细节理解题,根据第二段"He calculated that the circumference(圆周) of the Earth was 28,600 miles(46,000 kilometers). "他计算出的地球的圆周周长是28600英里(46000公里),可知,他确信地球是圆的,故sphere是一个球体,故选C.30.B,词义猜测题,根据第二段大意可知,Eratosthenes 测算出地球的周长,可知...
He calculated that the circumference(圆周) of the Earth was 28, 600 miles(46, 000 kilometers).The true size of the Earth is 25, 000 miles (40, 000 kilometers).Eratosthenes' measurement was wrong, but it was very close to the truth....
Eratosthenes was a librarian at the ancient Library of Alexandria sometime around 240 BCE. He made many contributions to science and the understanding of the universe, but here I wish to tell you about his measurement of the circumference of the Earth. Under the assumption that the Sun's rays...
"To obtain an idea of the size of a light-year, take the circumference of the Earth (24,900 miles), lay it out in a straight line, multiply the length of the line by 7.5 (the corresponding distance is one light-second), then place 31.6 million similar lines end to end," NASA's ...
If you wanted to travel around the world without stopping, how long would it take you? Earth is the fifth largest planet in the Solar System and has a circumference of 40,070 km (24,898 miles) according to measurements by orbiting spacecraft. Its radius is 6,378 km (3,963 miles), ...
In fact, the ninth-century Abbasid Caliph al-Ma-mun sent an expedition to do exactly that and used those observations to measureEarth's circumference. Related:Earth's atmosphere: Composition, climate & weather Circles everywhere You might not be able to mount such a scientific investigation to ...
Just like the craters you might have made in your moon dough, not all will have the same depth or diameter. Some of the largest craters in circumference are considered pretty shallow at 15,000 feet deep whereas some newer craters are over 12 miles deep but smaller in the distance around!
He walks around the world. Assuming that the diameter of earth is 7915 miles, how much further does Nick's head travel than his feet? How many nanoseconds in a second? What is the square root of pi squared? What are dimensions of bilingualism? What is the basic wavelength equation?
Multiply this by pi (3.142) to get the circumference in mm (F) 2130. Appropriate calculations will yield calibration numbers for computers in other groups. (Thanks to Chris Ziolkowski for suggesting this.) However, the actual rolling diameter will be about 1% smaller for a road tire, and...