The Planck-Balance—using a fixed value of the Planck constant to calibrate E1/E2-weights
Sign Up to like & getrecommendations! Published in 2018 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/aabc9e
Abstract: A balance is proposed, which allows the calibration of weights in a continuous range from 1 mg to 1 kg using a fixed value of the Planck constant, h. This so-called Planck-Balance (PB) uses the… read more here.
Keywords: fixed value; value planck; planck; using fixed ... See more keywords
Determining Planck’s constant with LEDs—what could possibly go wrong?
Sign Up to like & getrecommendations! Published in 2019 at "Physics Education"
DOI: 10.1088/1361-6552/ab525d
Abstract: Light emitting diodes have been used to determine Planck's constant in introductory physics laboratories. One common method relies on the energy of the light emitted by the LED and its relation to the energy gap… read more here.
Keywords: energy; physics; leds could; determining planck ... See more keywords
The first determination of the Planck constant with the joule balance NIM-2
Sign Up to like & getrecommendations! Published in 2017 at "Metrologia"
DOI: 10.1088/1681-7575/aa7a65
Abstract: The National Institute of Metrology (NIM, China) proposed a joule balance method to measure the Planck constant in 2006, and built the first prototype NIM-1 to verify its principle with a relative uncertainty of 8.9… read more here.
Keywords: joule balance; planck constant; nim;