![National Institute of Standards and Technology on Twitter: "Maybe #AhmedMohamed will build a LEGO watt balance for his next project? https://t.co/stgfCskQVz https://t.co/xxiUtCQWaM" / Twitter National Institute of Standards and Technology on Twitter: "Maybe #AhmedMohamed will build a LEGO watt balance for his next project? https://t.co/stgfCskQVz https://t.co/xxiUtCQWaM" / Twitter](https://pbs.twimg.com/media/CRxRlJjUwAAGpmK.jpg)
National Institute of Standards and Technology on Twitter: "Maybe #AhmedMohamed will build a LEGO watt balance for his next project? https://t.co/stgfCskQVz https://t.co/xxiUtCQWaM" / Twitter
![A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11 A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11](https://aapt.scitation.org/action/showOpenGraphArticleImage?doi=10.1119/1.4929898&id=images/medium/1.4929898.figures.online.f2.jpg)
A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11
![experimental physics - How can a Lego version of a Kibble balance measure the Planck constant? - Physics Stack Exchange experimental physics - How can a Lego version of a Kibble balance measure the Planck constant? - Physics Stack Exchange](https://i.stack.imgur.com/7tYTi.jpg)
experimental physics - How can a Lego version of a Kibble balance measure the Planck constant? - Physics Stack Exchange
![Jessica Marshall on Twitter: "NIST balance made of LEGO that is part of the effort to redefine the kilogram. #SciWri18 https://t.co/t6mjlTk9tL" / Twitter Jessica Marshall on Twitter: "NIST balance made of LEGO that is part of the effort to redefine the kilogram. #SciWri18 https://t.co/t6mjlTk9tL" / Twitter](https://pbs.twimg.com/media/Dpo8G4kUwAEsw-o.jpg:large)
Jessica Marshall on Twitter: "NIST balance made of LEGO that is part of the effort to redefine the kilogram. #SciWri18 https://t.co/t6mjlTk9tL" / Twitter
![A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11 A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11](https://aapt.scitation.org/action/showOpenGraphArticleImage?doi=10.1119/1.4929898&id=images/medium/1.4929898.figures.online.f3.jpg)
A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11
![Alex Knight on Twitter: "More on the LEGO Watt Balance from @usnistgov: http://t.co/fwecdRrKC8" / Twitter Alex Knight on Twitter: "More on the LEGO Watt Balance from @usnistgov: http://t.co/fwecdRrKC8" / Twitter](https://pbs.twimg.com/media/CDSUACyWIAARGBh.jpg)
Alex Knight on Twitter: "More on the LEGO Watt Balance from @usnistgov: http://t.co/fwecdRrKC8" / Twitter
![A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11 A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11](https://aapt.scitation.org/action/showOpenGraphArticleImage?doi=10.1119/1.4929898&id=images/medium/1.4929898.figures.online.f5.jpg)
A LEGO Watt balance: An apparatus to determine a mass based on the new SI: American Journal of Physics: Vol 83, No 11
![Alex Knight on Twitter: "More on the LEGO Watt Balance from @usnistgov: http://t.co/fwecdRrKC8" / Twitter Alex Knight on Twitter: "More on the LEGO Watt Balance from @usnistgov: http://t.co/fwecdRrKC8" / Twitter](https://pbs.twimg.com/media/CDRqMadWAAAWELE.jpg)