| Full text | |
| Author(s): |
Luiz Paulo Damaceno
[1]
;
Richard Mascarin
[2]
;
João Marcelo Pereira Nogueira
[3]
;
Daniel Varela Magalhães
[4]
;
Vanderlei Salvador Bagnato
[5]
Total Authors: 5
|
| Affiliation: | [1] Universidade de São Paulo. Instituto de Física de São Carlos - Brasil
[2] Universidade de São Paulo. Instituto de Física de São Carlos - Brasil
[3] Universidade de São Paulo. Instituto de Física de São Carlos - Brasil
[4] Universidade de São Paulo. Escola de Engenharia de São Carlos - Brasil
[5] Universidade de São Paulo. Instituto de Física de São Carlos - Brasil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Revista Brasileira de Ensino de Física; v. 41, n. 3 2019-01-10. |
| Abstract | |
Abstract In 2019, the unity of mass of the International System of Units (SI), the kilogram, will have its definition modified. It will not be anymore the metallic artifact kept in the BIPM building, in the neighborhood of Paris, to be based on Planck's constant (h). What is the need for this change? And how the measurements will be done? These are some of the questions that will be answered at this communication, where we describe the operation of the experiment named Watt Balance used in the new way to realize the unity of mass. Besides that, we will describe how we assembled a Balance for teaching purposes, used in talks about the theme. The topic interests everybody, but in special students that take physics courses in any area. (AU) | |
| FAPESP's process: | 13/07276-1 - CEPOF - Optics and Photonic Research Center |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |