The adding machine was invented by French mathematician, physicist and philosopher Blaise Pascal. Pascal developed his mechanical device, which he named the Pascaline, in 1642. The apparatus, whose predecessor was the abacus, is regarded as the original digital calculator in that it operated by counting integers.Know More
In 1671, the German mathematician and philosopher Gottfried Wilhem von Leibniz expanded on its design, resulting in the Step Reckoner, a calculating machine first built in 1673. The Step Reckoner could multiply as well as add by using repeated addition and shifting.
The first modern computer, the Analytical Engine, was not conceived until several years later in 1834 by English mathematician and mechanical engineer Charles Babbage.Learn more about Math Calculators
The formula used to calculate "case cube" is length times width times height, or l * w * h. It does not matter in which order these measurements are multiplied as the same answer will be obtained.Full Answer >
One meter is equal to 3.2808 feet. The meter is the base unit of the metric system, while the foot is used in the imperial and U.S. customary measurement systems. The abbreviation most often used for feet is ft. The symbol primarily used for meter is m.Full Answer >
Percent abundance can be calculated by finding the percentage of an isotope compared to another isotope of an element using its relative atomic mass. This is an algebraic process and depends upon several measurements.Full Answer >
Water freezes at 273 Kelvin. Kelvin is a temperature scale named after William Thomson, also called Lord Kelvin. The Kelvin scale starts at zero, the lowest possible temperature.Full Answer >