Last week, March 14th wasn't just Japan's famous White Day; it was also Pi Day, a special occasion designated by Americans due to Pi's approximate value of 3.14. Pi is an irrational number, meaning its decimal representation goes on forever without repeating. That's why people often challenge themselves to memorize its digits beyond 3.14. Most folks hit their limit around 3.14159265.
But what if a hanko craftsman decided to take on the Pi challenge, not just by memorizing it, but by *carving* it into a seal? How many digits do you think they could manage?
Nagae Inshodo, the renowned hanko shop we've featured before, is back at it with another wild creation! This time, they've carved a circular seal dedicated to Pi. And we're not talking about a simple Greek letter "Pi" or "3.14." Oh no, they've taken Pi's approximate value and rendered it as a spiral of digits across the entire seal face.
▼ Yep, Pi can totally be a seal.
The craftsman created a seal the size of a 1-yen coin, meticulously carving a spiral of 389 digits after the decimal point. Just carving 389 digits is impressive enough, but fitting all of them onto such a tiny circular seal? And for that minuscule seal to then *stamp out* Pi? That's pure wizardry! Netizens on X (formerly Twitter) are absolutely raving about the craftsman's skill, with some even saying they want one, even if they're not sure when they'd ever use it.
For those who *do* want to get their hands on this Pi seal, it's available now on their online store for 19,800 yen.
via： ねとらぼ