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Steve Ballmer - Wikipedia
Steven Anthony Ballmer ( / ˈbɔːlmər /; March 24, 1956) [1] is an American business executive and investor who was the chief executive officer of Microsoft from 2000 to 2014. [1] . He is the owner of the Los Angeles Clippers of the National Basketball Association (NBA). He is a co-founder of Ballmer Group, a philanthropic investment company. [2]
1.4: The Hydrogen Atomic Spectrum - Chemistry LibreTexts
Balmer decided that the most likely atom to show simple spectral patterns was the lightest atom, hydrogen. Ångström had measured the four visible spectral lines to have wavelengths 656.21, 486.07, 434.01 and 410.12 nm (Figure 1.4.4 ). Balmer concentrated on just these four numbers, and found they were represented by the phenomenological formula:
Johann Jakob Balmer | Biography & Facts | Britannica
Johann Jakob Balmer (born May 1, 1825, Lausen, Switzerland—died March 12, 1898, Basel) was a Swiss mathematician who discovered a formula basic to the development of atomic theory and the field of atomic spectroscopy. A secondary-school teacher in Basel from 1859 until his death, Balmer also lectured (1865–90) on geometry at the University ...
Balmer series - Wikipedia
The Balmer series, or Balmer lines in atomic physics, is one of a set of six named series describing the spectral line emissions of the hydrogen atom. The Balmer series is calculated using the Balmer formula, an empirical equation discovered by Johann Balmer in 1885.
Balmer Series Definition in Science - ThoughtCo
The Balmer series is the portion of the emission spectrum of hydrogen that represents electron transitions from energy levels n > 2 to n = 2. These are four lines in the visible spectrum. They are also known as the Balmer lines. The four visible Balmer lines of hydrogen appear at 410 nm, 434 nm, 486 nm and 656 nm.
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