Science Technology

11 Great Names Behind The Units Of Measure

Even with all our technology and the inventions that make modern life so much easier than it once was,

it takes just one big natural disaster to wipe all that away and remind us that, here on Earth, we’re still at the mercy of nature.

Neil deGrasse Tyson

Every scientists would accept it as a great honour to become namesake of some device or unit which people use in daily life. Especially when it comes  to unit of measurement, it should be greatest reward if they’re the ones who discovered what’s being measured in the first place. Sometimes when we use those terms like “Celsius” or “Volt”, we don’t realise the labels is all we know of the inventors.

Here we are going to revise the real people behind the units.

1 – Daniel Gabriel Fahrenheit
(1686–1736)

11 Great Names Behind The Units Of MeasureLeft:Daniel Gabriel Fahrenheit. Commemorative plaque in Den Haag, where he is buried/Right:Fahrenheit Celsius scales.


The Dutch physicist invented alcohol and mercury thermometers, as well as the temperature scale that now bears his name (and perplexes the world outside the U.S. and a handful of other countries), with 0 degrees marking the temperature of a 1-1 mix of ice and salt.

2  – Anders Celsius
(1701–1744)

11 Great Names Behind The Units Of MeasureAnders Celsius

A well-traveled Swedish astronomer and professor at Uppsala University, he invented the Celsius (also called centigrade) temperature scale. In the system, now used worldwide, water freezes at 0 degrees and boils at 100.

3 – William Thomson, Lord Kelvin
(1824–1907)

11 Great Names Behind The Units Of MeasureWilliam Thomson, Lord Kelvin

The British mathematician and physicist helped establish thermodynamics and invented our third temperature scale: 0 is equivalent to absolute zero, the theoretical coldest temperature possible. It isn’t measured by degrees, but individual kelvins.

4 – James Prescott Joule
(1818–1889)

11 Great Names Behind The Units Of MeasureEngraving of James Joule's apparatus for measuring the mechanical equivalent of heat, in which altitude potential energy from the weight on the right is converted into heat at the left, through stirring of water.

The unit that measures work, or energy (a force acting over distance), honors the British physicist who established that all forms of energy are equivalent. He also developed thermodynamics, along with Lord Kelvin.

5 – Alessandro Volta
(1745–1827)

11 Great Names Behind The Units Of MeasureAlessandro Volta


The namesake behind today’s volts, which measure differences in electrical potential, Italian physicist and experimentalist Volta discovered methane, used his tongue to detect electricity and invented the first electric battery.

6 – André-Marie Ampère
(1775–1836)

11 Great Names Behind The Units Of MeasureAndré-Marie Ampère

Another major electrical unit, the current-measuring ampere, takes its name from this French physicist. He was one of the main founders of the science of electromagnetism, which he christened “electrodynamics.”

7 – Max Planck
(1858–1947)

11 Great Names Behind The Units Of MeasureMax Planck

The German theoretical physicist invented quantum theory, so of course his unit is hard to grasp. The Planck length (1.616 x 10-35 meters), a tiny fraction of a proton’s diameter, is theoretically the smallest possible measurable length.

8 – Alexander Graham Bell
(1847–1922)

11 Great Names Behind The Units Of MeasureAlexander Graham Bell

The Scottish-born inventor of the telephone and teacher of the deaf may have a famous name, but the unit named for him hides behind a fractional prefix: the decibel. Fittingly, it quantifies the relative intensity, or loudness, of sounds.

9 – Charles F. Richter
(1900–1985)

11 Great Names Behind The Units Of MeasureCharles F. Richter

In 1935, the American seismologist and physicist came up with the earthquake-measuring scale that bears his name (though today’s scientists have replaced it with other, more precise systems). Originally interested in astronomy and chemistry, Richter got into seismology simply because that’s where a job opened up.

10 – Tetsuya “Ted” Fujita
(1920–1998)

11 Great Names Behind The Units Of MeasureT. Theodore Fujita, shown with his tornado simulator.

The scariest tornadoes are classified as EF5, but where does the F come from? The Japanese-born storm researcher Fujita lent his name to the system he created for classifying tornadic destructiveness, though scientists have since refined it into the Enhanced Fujita scale. He also contributed to hurricane and thunderstorm analysis.

11 – Wilbur Scoville
(1865–1942)

11 Great Names Behind The Units Of MeasureWilbur Scoville


Even the hotness of hot peppers is susceptible to scientific quantification. While developing his test, which assigns Scoville heat units to the various species of the genus Capsicum, the American pharmacist (and presumed spiciness fan) realized the most sensitive instrument at his disposal was the human tongue. — B.A.

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11 Great Names Behind The Units Of Measure
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