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Happy Pi Day! Ways to celebrate here
earthsky.org
Have you heard of Pi Day? It is celebrated every year on March 14. The date, 3/14, matches the first three digits of the famous mathematical number called pi. Pi is the ratio of a circle's circumference to its diameter. This means if you take the distance around any circle and divide it by the distance across that circle, you will always get the same number: approximately 3.14. This is true no matter how big or small the circle is.
Pi is a special number because its decimal digits go on forever without repeating. People often write it as 3.14, but it continues as 3.14159... and never ends. This endless quality is part of what makes pi so interesting. Pi Day is a fun holiday for science and math lovers all over the world. It mixes education with celebration, and anyone can join in.
People sometimes compete to see who can memorize the most digits of pi. The record is held by Rajveer Meena, who memorized 70,000 decimal places.
Scientists use calculations of pi to test computers. Running these complex calculations is like a "digital cardiogram" that checks a computer's health.
There is a men's cologne named Pi, made by the company Givenchy. The creators said it was for an intellectual and visionary person.
Pi has other names in history. It is sometimes called Archimedes' constant or Ludolph's number.
Pi has even appeared in science fiction. In an episode of the TV show Star Trek, the character Spock stops an evil computer by commanding it to calculate the value of pi forever.
A physicist named Larry Shaw created Pi Day in 1988. He worked at the Exploratorium, an innovative science museum in San Francisco. For the first celebration, staff and visitors marched around a circular space in the museum while eating fruit pies.
In the United States, the government officially recognized the day. On March 12, 2009, the U.S. House of Representatives declared March 14 to be National Pi Day.
Today, the day is celebrated by many people and institutions. Students, teachers, parents, museums, science centers, and planetariums all take part in the fun.
NASA, the American space agency, offers many resources for Pi Day. You can find a special Pi Day Challenge on their website. This challenge lets you solve problems similar to those NASA scientists and engineers solve, using pi in their calculations. The site also has lessons and downloads related to pi.
NASA provides even more ways to explore pi. These include an article called "18 Ways NASA Uses Pi," which explains how this number is vital for space exploration.
Another resource asks, "How Many Decimals of Pi Do We Really Need?" for different scientific calculations.
You can also find lessons called "Pi in the Sky" and an infographic titled "Planet Pi."
Furthermore, you can download special mobile and web backgrounds from The NASA Pi Day Challenge page.
Did you know there is a planet nicknamed the "pi planet"? It is an exoplanet, a planet outside our solar system, known as K2-315b. Scientists gave it this nickname because it takes 3.14 Earth days to orbit its star, matching the value of pi.
This planet is almost the same size as Earth, with a radius about 95% as large. That makes it similar in size to Venus. Like Venus, it is extremely hot, with surface temperatures reaching about 350 degrees Fahrenheit (177 degrees Celsius).
The planet orbits a type of star called a red dwarf, which is cooler and smaller than our sun. This star, named EPIC 249631677, is located about 186 light-years away from Earth.
In summary, March 14 is Pi Day. It is an annual event that celebrates mathematics and science. You can celebrate by learning about pi, trying the NASA Pi Day Challenge, or simply enjoying a slice of pie!
This information is based on resources from NASA and piday.org.