In one number, which is equal to the sum of all of its possible divisors (without herself) is, …
Category: mathematics
What are square numbers?
Any square can be formed with game pieces or marbles, The first square has two rows of each 2 Stones, …
What are triangular numbers?
Other Greeks explored the magic of numbers. The students of Pythagoras found, that he, when adding consecutive numbers, Rules about …
Who measured the distance to the moon first??
In the second century BC. Chr. calculated Hipparchus, a famous astronomer in Alexandria, the earth-moon distance. His calculations showed, that the …
How did you measure the size of the earth in the past??
The Greek mathematician Eratosthenes (a 225 v. Chr.) was librarian in the famous great library at Alexandria in Egypt. Is …
What does the Pythagorean theorem say?
Longest Side Square — Sum of the squares of the shorter sides.
The Greek Pythagoras found around 500 v. Chr. a …
How can you measure heights?
You can measure any height, if one applies the tenets of Thai. Everything, what you need, is a simple measuring instrument, …
The contribution of the Greeks
One is of the opinion today, that mathematics did not become a science until the Golden Age of Greece. Zwar entwickelten schon …