What is a Kilogram? | Hello Science | Vikrant Kirar скачать в хорошем качестве

What is a Kilogram? | Hello Science | Vikrant Kirar

NCERT Physics class 11 chapter 2 Units and Measurement, Measurement of Mass Kilogram: The name itself carries a lot of weight! But how did we decide on the name kilogram? How is kilogram defined? In this video, Vikrant Kirar takes you through the timeline of definitions of the kilogram. The kilogram was originally defined in 1795 as the mass of one litre of water and was called grave. But a kilogram today is not what it used to be. The kilogram is the SI unit of mass having the unit symbol kg and is defined in terms of three fundamental physical constants: The speed of light c, a specific atomic transition frequency ΔνCs, and the Planck constant h. Vikrant Kirar and other top educators are teaching live on Unacademy. Use code “CRASHUP" or "VIKRANT” to get 10% off on your Unacademy Subscription. Vikrant Kirar's profile- https://unacademy.com/@crashup Crashup Channel Link:    / crashup   Join our Telegram channel: https://t.me/HelloSci Watch the full playlist here -    • Explore Science Definitions | Fun Science ...   Do Subscribe and be a part of the community for more such lessons here:    / @helloscience7438   Unacademy Subscription Benefits: 1. Learn from your favorite teacher 2. Dedicated DOUBT sessions 3. One Subscription, Unlimited Access 4. Real-time interaction with Teachers 5. You can ask doubts in a live class 6. Limited students 7. Download the videos & watch offline