## Constants

What Is Planck’s Constant?

What is a constant? In mathematics and science, a constant is a fixed value that remains unchanged throughout an equation, experiment, or mathematical operation. Constants are pivotal in providing stability and consistency to calculations and observations, playing a fundamental role in various fields of study.

## Really Big Numbers

10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Large numbers can be fascinating and complex, often stretching our imagination and comprehension. Throughout history, people have developed various naming conventions to represent these vast quantities.

## Where is the Center of North America?

Where is it really?

Since 1931, Rugby, North Dakota has claimed this honor. They have a stone monument and everything. Rugby has a population of about 2,700 and is the county seat of Pierce County. Rugby was founded in 1886 at a junction on the Great Northern Railway, where a branch line to Bottineau met the main line.

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## Pi Day

Pi Day (March 14) was celebrated for the first time in 1988 by American physicist Larry Shaw.

Pi (often represented by the lower-case Greek letter π), one of the most well-known mathematical constants, is the ratio of a circle’s circumference to its diameter. For any circle, the distance around the edge is a little more than three times the distance across. Typing π into a calculator and pressing ENTER will yield the result 3.141592654, not because this value is exact, but because a calculator’s display is often limited to 10 digits.

## Prime Numbers

Since the dawn of electronic computing, programs for finding primes have been used as a test of the hardware.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. The first six primes are 2, 3, 5, 7, 11, and 13. But why? What good are prime numbers?

## What are the Odds?

The chance that one thing will happen instead of a different thing

Odds provide a measure of the likelihood of a particular outcome. They are calculated as the ratio of the number of events that produce that outcome to the number that do not. Odds are commonly used in gambling and statistics. Odds also have a simple relation with probability: the odds of an outcome are the ratio of the probability that the outcome occurs to the probability that the outcome does not occur.

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## Why Are Manhole Covers Round?

Because people are round, not square

A manhole is just what it seems, an access hole, large enough for a man to climb down to the sewer. So why aren’t they rectangular or square? Well, a round cover can’t fall through its hole. A square cover turned diagonally will slide right through its square opening.

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## Zero

Zero – the figure or symbol 0, which in the Arabic notation for numbers stands for the absence of quantity

Zero describes nothing, like how much extra money I have. The number zero as we know it arrived in the West circa 1200, most famously delivered by Italian mathematician Fibonacci[1] (aka Leonardo of Pisa), who brought it, along with the rest of the Arabic numerals, back from his travels to North Africa.