General Physics - 편집 역사

2025년 3월 10일 (월) 03:36에 Jwlee님의 편집

2025-03-10T03:36:35Z

← 이전 판		2025년 3월 10일 (월) 12:36 판
4번째 줄:		4번째 줄:

	[ https://physics.stackexchange.com/questions/488334/how-can-i-explain-what-a-kilogram-is-using-plancks-constant ]		[ https://physics.stackexchange.com/questions/488334/how-can-i-explain-what-a-kilogram-is-using-plancks-constant ]

			중간에 c^2 는 안되어 있는데 숫자는 맞다.

			즉 세슘이 excited state에 있으면 질량이 증가할 텐데 이 질량이 얼마나 증가할 것인가의 문제고
			이 정도의 세슘이 있다면 1kg이 된다.

			세슘 원자 40-23 = 17 몰 정도의 세슘이 있어야 1kg의 질량 변화가 있는 셈이다.

2025년 3월 10일 (월) 03:32에 Jwlee님의 편집

2025-03-10T03:32:09Z

← 이전 판		2025년 3월 10일 (월) 12:32 판
1번째 줄:		1번째 줄:

	The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.		The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.


			[ https://physics.stackexchange.com/questions/488334/how-can-i-explain-what-a-kilogram-is-using-plancks-constant ]

Jwlee: 새 문서: The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.

2025-03-05T05:15:07Z

새 문서: The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.

새 문서

The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.