On October 3rd, two high-accuracy clocks were placed in Tokyo Skytree. One was installed on a ground floor meeting room, while the other went all the way to the observation deck, 634 meters up. They were put there by a group of scientists from The University of Tokyo. Why? To test Einstein's theory of relativity, of course.
An engineering professor at the University of Tokyo, Hidetoshi Katori, made the time-keeping devices -- called optimal lattice clocks -- back in 2005. They're believed to be some of the most accurate in the world.
According to Einstein's theory of relativity, time should move faster on the observation deck than at the bottom floor. Professor Katori is hoping to prove just that. His clocks will be left in place for two months before the data is to be analyzed. Theoretically, after a single month, the time difference between the two clocks should be 0.13 microseconds. To give you an idea of how tiny a microsecond is, if you wanted to create a lag of a single second, the clocks would have to stay in place for 700,000 years.
If this experiment is a success, then next it will be tried on Mount Fuji.
More on the experiment can be found here at Asahi Shimbun and this video (Japanese).
I was looking at photos of Chigasaki, Japan in Google Images when I saw a photo a smiling man with what looked to be a huge pink bump on his shoulder. I clicked for a closer look and learned that he is a katsugite, a person who helps carry one-ton Shinto shrines supported on wooden […]
Language learning brand Busuu took to the streets of London to see if native English speakers could translate the Japanese words thrown at them. They did better than I would have! Just like the English language has borrowed words from Japanese, like karaoke or sushi, modern Japanese uses a fair amount of vocabulary borrowed from […]
The business end of KOKUYO Beetle Tips highlighter looks a bit like a rhinoceros beetle’s horns, hence the name. Three-way refers to the fun you’ll have with the highlighter when you make three different kinds of marks with it. Amazon sells a colorful 5-pack for . [via]
In the early days of the web, everyone wanted a .com domain for their site. As a result, all the good ones got snapped up. But .com no longer has the cachet it once did. In fact, many new businesses and individuals are opting for other top-level domain extensions. One of the most memorable is […]
When the SNES launched back in the early 1990s, it changed gaming forever. One of the innovations was a gamepad with four action buttons — something that has remained a constant on controllers ever since. The 8BitDo SN30 Bluetooth Gamepad brings that iconic design up to date, with Bluetooth connectivity and support for multiple platforms. […]
After a long day at work, cooking a meal from scratch can seem like too much trouble. Unfortunately, the alternative is usually something unhealthy. Enter the Mellow Sous Vide Precision Cooker. This compact water bath uses cutting-edge technology to cook meat and veggies at the perfect temperature for exactly the right amount of time. It […]