
This weighty physics revolution might just change the way you look at numbers.
Whether it’s losing weight for cosplay or gaining muscle to impress that special someone, our lives sometimes revolve around mass. To the most of us, the humble kilogram is nothing more than a unit of measurement, but a recent scientific breakthrough may change its very definition.
Let’s take a step back into the 1875, when scientists were working fastidiously to better understand our world. In order to establish a standard of measuring weight with high precision, they created a cylindrical piece of metal made of platinum and iridium alloy, weighing exactly one kilogram. This was called the International Prototype Kilogram (IPK) and has become the definition of the kilogram we’ve all come to know.
▼ The IPK is protected in layers upon layers of glass.
If you’ve failed physics before, you should blame this thing.
Look: 'Le Grand K', made in 1879, is the international prototype kilogram that defines all… http://t.co/oXg3t7s5Lc pic.twitter.com/FTUzPIjocW
— Spaceman Slog (@spacemanslog) April 14, 2015
The IPK has been faithfully replicated and distributed to numerous countries so that their kilogram can be based off of those, but the original is housed in the International Bureau of Weights and Measurements in France. Dust, contaminants, and countless other factors can change the IPK’s weight, causing each kilogram in the world to be off by a different amount. This may not matter much to the average person, but this inaccuracy can be a huge problem in sensitive research such as those involving radioactive materials.
In an effort to move away from defining the kilogram using an outdated chunk of metal and the inaccuracies that come with it, the National Institute of Advanced Industrial Science and Technology (AIST) in Japan has developed an ultra high-precision silicon ball that is currently the most spherical sphere on Earth. Crafted using lasers and some fancy formulae, this new IPK has been tested to be twice as accurate as the cylindrical one, which would contribute tremendously to fields requiring precise measurements like drug development.
▼ We’re going from a cylinder to a ball in order to improve our world.
キログラムの定義変更に関する産総研の発表「質量の単位「キログラム」の新たな基準となるプランク定数の決定に貢献」 https://t.co/Fx3oOVeGAN 2010年に産総研の展示室を見学した時、キログラム原器のレプリカとシリコン球が並べて展示してあったのは、これだったのか。 pic.twitter.com/d57uf50pch
— K.Fukuda (@kazufukuda) October 24, 2017
AIST hopes to present this new standard to an international conference next year, which would change the way the kilogram is defined for the first time in 130 years. While its benefits might not be apparent to most of us immediately, rest assured that our way of life involving kilograms would become… more accurate, which might help some Japanese women trying to achieve the weight of a fairytale princess.
Source: NHK via My Game News Flash
Top image: Pakutaso

Studio Ghibli launches huge new anime movie T-shirt collection with special design details
7-Eleven Japan’s cooked-in-store takoyaki is here! How does it fare against the street food king?
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Burger King Japan launches King Fusion, and the possibilities are endless (and delicious)
Studio Ghibli launches huge new anime movie T-shirt collection with special design details
7-Eleven Japan’s cooked-in-store takoyaki is here! How does it fare against the street food king?
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Burger King Japan launches King Fusion, and the possibilities are endless (and delicious)
Tifa’s Final Fantasy VII bar is going to pop up in real-world Tokyo
Tsujihan sushi bowl restaurant goes viral with foreign tourists, but is it worth the hype?
Osaka club offers up great heavy metal hand washing song selections
KFC now selling bento lunchboxes from exclusive chain of Japanese-style outlets
A visit to Mugenkyo, the valley of phantom mists, and the abandoned village of Mifuke【Photos】
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Studio Ghibli croquettes not to eat, but to keep your stuff in, going on sale in Japan[Photos]
Pokémon hot spring footbath opening in Japan this spring
Secret staff cafeteria in Tokyo is a hidden gem you won’t find in travel guides
Move aside, convenience store egg sando – there’s a better version of the iconic sandwich in Japan
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Japan now has a special desk for people who work at home with a pet cat[Photos]
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Tifa’s Final Fantasy VII bar is going to pop up in real-world Tokyo
Tsujihan sushi bowl restaurant goes viral with foreign tourists, but is it worth the hype?
Osaka club offers up great heavy metal hand washing song selections
KFC now selling bento lunchboxes from exclusive chain of Japanese-style outlets
A visit to Mugenkyo, the valley of phantom mists, and the abandoned village of Mifuke【Photos】
For-adults PreCure anime could be on the way this year, trademark filing suggests
Tokyo’s city hall changes dress code, workers now allowed to wear shorts[Videos]
Pokémon GO now doctor-approved thanks to Tokyo University study
New cafe in trendy Tokyo neighborhood is staffed by grannies and grandpas with average age of 73
Mr. Sato experiences the all-you-can-eat bread heaven…at Kamakura Pasta
J-pop…maybe J-metal?…band Asunojokei blends genres, wins fans in Japan and abroad【Interview】
New survey reveals which Studio Ghibli heroine Japanese audiences relate to the most