Understanding Bohr’s Helium Lines - Physics Forums
Aug 16, 2019 · Bohr predicts that, in a star or in a vacuum tube containing hydrogen and helium and under proper conditions of excitation, the resulting spectrum will appear as in Figure 4. The heavy …
Fluorescence Excitation and Emission Spectra - Physics Forums
Dec 16, 2013 · The discussion centers on the relationship between excitation and emission spectra for fluorescent materials, exploring how these spectra interact and the implications for fluorescence …
Calculating the Balmer Alpha Line: Atomic Hydrogen
Jul 8, 2019 · Introduction Most readers acquainted with the hydrogen spectrum will be familiar with the set of lines in the visible spectrum representing transitions of electrons from energy levels 3,4,5 and …
Confusion about absorption spectra - cool gases absorb?
Jan 18, 2019 · The discussion revolves around the behavior of low-density gases in relation to absorption and emission spectra, particularly focusing on the definitions of "hot" and "cool" gases. …
Why Does Hydrogen Have Multiple Lines on Its Spectrum?
Jul 9, 2010 · The discussion revolves around the hydrogen spectrum and the reasons for the presence of multiple lines in its emission spectrum despite having only one electron. Participants explore …
Kirchhoff's Three Laws of Spectroscopy - Physics Forums
Jun 28, 2011 · Kirchhoff's Three Laws of Spectroscopy establish foundational principles in the field: (1) An incandescent solid, liquid, or gas under high pressure emits a continuous spectrum; (2) A hot gas …
Why Does UV Light Have More Energy Than Visible Light in an …
Jul 3, 2021 · The emission spectrum of an unknown element contains two lines-one in the visible portion of the spectrum, and the other, ultraviolet. Based on figure 1.1 and on what you have learned about …
Observing Emission Spectra from Computer Screens
Dec 4, 2021 · This discussion focuses on the observation of emission spectra from computer screens using a DIY spectroscope. It confirms that LED screens emit light through narrow bands, while TFT …
Why Six Lines in the Emission Spectrum? - Physics Forums
Apr 7, 2006 · The discussion revolves around the emission spectrum of hydrogen, specifically addressing why six lines are observed when electrons transition from the third excited energy level …
Why only certain colors in emission spectrum are visible?
May 31, 2017 · The discussion revolves around the visibility of certain colors in the emission spectrum of hydrogen, exploring both the limitations of human vision and the nature of hydrogen's emission …