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The hydrogen spectral series can be expressed simply in terms of the Rydberg constant for hydrogen and the Rydberg formula. In atomic physics , Rydberg unit of energy , symbol Ry, corresponds to the energy of the photon whose wavenumber is the Rydberg constant, i.e. the ionization energy of the hydrogen atom in a simplified Bohr model.
The Việt Nam Quốc Dân Đảng (Vietnamese: [vìət naːm kwə́wk zən ɗa᷉ːŋ]; chữ Hán: 越南國民黨; lit. ' Vietnamese Nationalist Party ' or ' Vietnamese National Party '), abbreviated VNQDĐ or Việt Quốc, was a nationalist and democratic socialist political party that sought independence from French colonial rule in Vietnam during the early 20th century. [4]
Johannes (Janne) Robert Rydberg (Swedish: [ˈrŷːdbærj]; 8 November 1854 – 28 December 1919) was a Swedish physicist mainly known for devising the Rydberg formula, in 1888, which is used to describe the wavelengths of photons (of visible light and other electromagnetic radiation) emitted by changes in the energy level of an electron in a hydrogen atom.
Rydberg had a value for his constant, but he had no idea where thatn constant came from. He didn't know that it was a simple (mathematically) function of the charge on the electron, the mass of an electron, the permitivity of free space, and the speed of light - plus another constant that he had no idea about because it wasn't discovered until ...
Quoc Trung first appeared on the 3rd season of Vietnam Idol in 2010. In 2011, Trung founded Thanh Viet Production, a record label and stage production company. Trung produced Uyen Linh's first album, My Own Dream (Giấc Mơ Tôi), released in February 2011.
According to some researchers, the name Nha Trang derives from a Vietnamese spelling of the Cham language name of the site Ea Dran (literally "Reed River"), the name of the Cai River as referred to by the Cham people. From the name of this river, the name was adopted to call what is now Nha Trang, which was officially made Vietnam's territory ...
Lê Văn Thiêm (29 March 1918 – 3 July 1991 [1] [2]) was a Vietnamese scientist.Together with Hoàng Tụy, he is considered the father of Vietnam Mathematics society.He was the first director of the Vietnam Institute of Mathematics, and the first Headmaster of Hanoi National University of Education and Hanoi University of Science.
Nguyễn Đình Chiểu was born in the southern province of Gia Định, the location of modern Saigon.He was of gentry parentage; his father was a native of Thừa Thiên–Huế, near Huế; but, during his service to the imperial government of Emperor Gia Long, he was posted south to serve under Lê Văn Duyệt, the governor of the south.