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is to define the mass and the weight with measurement of the gravitational force on an object,...
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How and when was the map of the world made and who made it?
In the 6th Century BC, the Map of the World was made by A Greek named Anaximander. He was the first Greek to draw a World Map using the assumption of a spherical earth was Eratosthenes.
Where was Eratosthenes of Cyrene the Greek mathematician born?
He was (as the name already suggests) born in Cyrene in today's Libya, in 276 BC.
How many days for Earth to make one revolution?
365 day, that's how we measure 1 year
Is it possible to measure area using Google Earth?
Yes. Google Earth Professional also allows you measure area, but it is expensive. Alternatively you can use the free version of Google Earth, mark the area to be measured as a path. Then save it as a kml file. Programs like EasyAcreage can then read these kml files and calculate the acreage for you. This method is remarkably accurate. See a case study where the accuracy of this method was used to measure the size of a tennis court. The KML Tools Project and Zonums area tool (in links below) is an easy way to measure area online.
What type of orbit does a weather satellite have and why?
The polar orbit so that it can measure cold and hot points around the entire earth :)
Describe how eratosthenes measure the size of Earth?
Eratosthenes measured the size of Earth by using the Sun's angles, as well as a bit of geometry.
When did Eratosthenes discover that the earth is not flat?
He did not do so. Earth was well-known to be a globe for at least two hundred years before Eratosthenes' time. What Eratosthenes did was to measure the earth's circumference for the first time. He did that at some time between 236 BC and 195 BC.
Who discovered the earths curcumference?
Eratosthenes was the first to measure the Earth's circumference pretty acurately.
What describes how Eratosthenes discovered the approximate circumference of the earth?
Which of the following describes how Eratosthenes discovered the approximate circumference of the earth
How did Eratosthenes measure the circumference of the earth?
HERE ARE SOME SITES YOU MIGHT WANT TO TAKE A LOOK AT... WITH A SHORT DESCRIPTION OF WHAT INFORMATION IT HAS ON THE WEBPAGE. * http://en.wikipedia.org/wiki/Eratosthenes- This is the Wikipedia page for Eratosthenes. It has a lot of information about him as well as how he measured the circumference of the Earth. It also lists reasons why Eratosthenes's calculation of the Earth's circumference has limited accuracy. * http://www.juliantrubin.com/bigten/eratosthenes.html - This site has all the information about how Eratosthenes measured the circumference of the Earth. It has a diagram to illustrate and explain further. This site also lists other sites and books relating to the math topic. * http://outreach.as.utexas.edu/marykay/assignments/eratos1.html - This is a webpage with information on how to do an activity related to Eratosthenes and his calculation of the Earth's circumference. It has some diagrams, some that show how Eratosthenes measured it, and some show real-world examples of how you can calculate the Earth's circumference just like Eratosthenes. Along with the drawing, this webpage has instructions on how you can measure the circumference of the Earth in real-life situations. * http://www.astro.cornell.edu/academics/courses/astro201/eratosthenes.htm - This webpage shows how the Earth's circumference was measured by Eratosthenes using geometry. It has a nice, easy-to-understand diagram to further explain Eratosthenes's calculation. The information on the webpage is probably very reliable since it's from a university. * http://mathforum.org/library/drmath/view/58988.html - This webpage is from Dr. Math's website. It has a very detailed explanation of how Eratosthenes measured the circumference of the Earth. There are no diagrams though. * http://eduwww.mikkeli.fi/opetus/myk/kv/comenius/erathostenes.htm - This webpage has a short summary of Eratosthenes's life. It has information on how the sieve of Eratosthenes, another thing Eratosthenes worked out in during his lifetime, worked. This page also has a lot of information about Eratosthenes and his calculation of the Earth's circumference, with a couple of drawings to make it easier to understand. * http://maps.unomaha.edu/Peterson/carta/Notes/eratosthenes.html - This website has a short biography of Eratosthenes and also how he measured the circumference of the Earth. The explanation is very detailed and easy to understand even without the support of diagrams. This site has a .edu in the address, so I think it will be very reliable. * http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_eratho.html - This PBS webpage has a short summary of Eratosthenes's life. This webpage has a little bit of information of Eratosthenes measure of the circumference of the Earth. It also tells how other great mathematicians, like Posidonius and Ptolemy, tried to measure the circumference of the Earth.
Who found circumference of earth?
Eratosthenes
Who is calculate the circumference of earth?
Eratosthenes
What did Eratosthenes determine?
He postulated the circumference of the earth.
Who was the first to discover the earth's diameter?
Eratosthenes
What place does Eratosthenes based the circumference of the earth?
rome
According to the chart studied about the earth?
eratosthenes and aristarchus
In 250 BC who determined the size of the earth?
Eratosthenes
