之前我寫過一篇文章,談論科學家快要更新SI度量衡標準。
很重要又很不重要的事情:重新定義甚麼是1 kg
“If aliens ever visit Earth what else would we talk about other than physics?” said Schlamminger. “if we say our unit of mass is based on a lump of metal we keep in Paris, we’ll be the laughing stock of the universe.”
si unit of mass 在 Why is kg the standard unit for mass and not g in SI? 的推薦與評價
Some people use cgs (centimeter-gram-second) units and others use SI (meter-kilogram-second), so it's not really true that the kg is the basic unit for mass ... ... <看更多>
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si unit of mass 在 Expressing Units 的推薦與評價
SI specifies certain units for various types of quantities, based on seven ... The SI unit of mass is the kilogram (kg), which is about 2.2 pounds (lb). ... <看更多>
si unit of mass 在 What is the `SI` unit of mass? How is it defined?... - YouTube 的推薦與評價
Question From - NCERT Chemistry Class 11 Chapter 01 Question – 014 SOME BASIC CONCEPTS OF CHEMISTRY CBSE, RBSE, UP, MP, BIHAR BOARDQUESTION ... ... <看更多>