| 释义 |
Brackett Physics.|ˈbrækɪt|
The name of Frederick Sumner Brackett (b. 1896), U.S. physicist, used attrib. to designate a series of lines discovered by him in 1922 (Astrophysical Jrnl. LVI. 154) in the infra-red part of the spectrum of atomic hydrogen, with wave numbers represented by the formula R(1/42 - 1/m2) (where R is the Rydberg constant and m = 5, 6,{ddd}), of which the first line is at 4·04 micrometres and the series limit is at 1·46 micrometres.
1930Pauling & Goudsmit Structure of Line Spectra i. 3 There have since been discovered other hydrogen series..the Lyman series..the Paschen series..the Brackett series. 1967[see Lyman]. 1970[see Pfund]. |