Aryabhata was an ancient Indian philosopher and astronomer who made a wide variety of contributions, including approximating the value of Pi, asserting that the Earth makes a daily rotation on an axis and describing rules for eclipse calculations. He wrote numerous books in his lifetime, many of which are believed to be lost. He lived from about 476 to 550 A.D.
Know MoreIn addition to approximating Pi's value, Aryabhata is believed to have first defined the number as irrational. He also developed formulas for calculating the area of shapes like triangles, leaving a strong mark on geometry, and his trigonometric contributions include a sine table that, like his other work, was written in verse. Not only was Aryabhata a mathematician and scientist, but he also had a talent for words.
Aryabhata's contributions to astronomy are also significant; these contributions include counting solar days, determining the Earth's spherical shape and making a nearly accurate prediction of the Earth's circumference. He was also a pioneer in predicting the source of the moon's light; he correctly asserted that the moon itself doesn't generate light but rather reflects light from the sun. This is all quite impressive considering that Aryabhata lived more than a thousand years before the earliest telescopes were developed in Europe.
Learn more about NumbersAccording to Joy of Pi, the value of pi to 100 decimal places is expressed as 3.1415926535897932384626433832795028841971693993751058209749445923078 164062862089986280348253421170679. Pi is an irrational number with a limitless, non-repeating decimal expansion.
Full Answer >In mathematics, a factor of a base number is any number that can be evenly divided into the base number. Due to this definition, a factor can only be less or equal to the original base number. Although all whole numbers can be divided evenly by one, it is still considered a factor.
Full Answer >Phi is the 21st letter of the Greek alphabet and in mathematics, it is used as a symbol for the golden ratio. The golden ratio refers to a special number that is approximately equal to 1.618. It is also known as the golden section, golden mean, divine section, medial proportion, golden cut, extreme and mean ratio, golden number or divine proportion.
Full Answer >"Mad Math" and "Mad Math 2" refer to app games for various smartphone systems that let kids practice addition, subtraction, multiplication and division. Versions of the game vary in complexity; "Mad Math Lite" is a free offering on the Apple iTunes website as of September 2014. "Mad Math 2" include math games based on bingo and bubbles.
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