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Pythagoras, a Greek mathematician and philosopher, made an important contribution in the fields of mathematics, science, music and astronomy in the 6th century BC. He had the belief that everything in the world can be explained by the numbers. It has raised important scientific problems that were 15 centuries later.

Geometry

Pythagoras studied the forms and in particular triangles and find a surprising fact about triangles:

The sum of the angles of a triangle equals two right angles (1800). If the triangle has a right angle (90 °), it is called a triangle and has special properties. If a, b and c are three sides of a right triangle, the longest side “c” is called the hypotenuse.

Pythagoras developed a thesis on relations between the three sides of a right angle triangle. This is popularly known as the Pythagorean theorem. It reads as follows:

In a right triangle, the sum of the squares of the two perpendicular sides always the same as the square of the hypotenuse (longest side). a2 + b2 = c2

If we know the length of both sides of a triangle, then Pythagoras’ theorem allows us to find the length of the third side. For example, if both sides are 4 cm and 3 cm long and the hypotenuse is 5 cm long. 32 + 42 = 52.
Pythagorean theorem is very useful and is widely used in geometry and measurement.

Astronomy

Pythagoras discovered that the earth was a sphere. He noted that orbit the Moon was inclined to the equator of the earth. He also stressed that Venus, known as the star of the evening was the same planet as the morning star. He also studied the formation of sounds by the movement of planets in the universe. The music of the spheres can be reproduced using a stringed instrument called monotonous.

Music

Pythagoras also found a relationship between music and mathematics. He noted that when the blacksmith his anvil hit function, different notes were produced for the weight of the hammer. Number (in this case the amount of weight) appeared to control musical tone. He also discovered that the length of a string is in direct proportion to his height mathematics. He explained how harmony can be produced when adjusting the treble and bass at the octave. This knowledge can then be applied to the development of musical instruments.

Although Pythagoras is best known for the Pythagorean theorem, he made influential contributions to many areas of mathematics, science, music and astronomy.