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2. List of physics mnemonics - Wikipedia

   en.wikipedia.org/wiki/List_of_physics_mnemonics

   ROYGBIV (in reverse VIBGYOR) is commonly used to remember the order of colors in the visible light spectrum, as seen in a rainbow. Richard of York gave battle in vain" (red, orange, yellow, green, blue, indigo, violet). Additionally, the fictitious name Roy G. Biv can be used as well. (red, orange, yellow, green, blue, indigo, violet).

3. Spectral line shape - Wikipedia

   en.wikipedia.org/wiki/Spectral_line_shape

   Spectral line shape or spectral line profile describes the form of an electromagnetic spectrum in the vicinity of a spectral line – a region of stronger or weaker intensity in the spectrum. Ideal line shapes include Lorentzian , Gaussian and Voigt functions, whose parameters are the line position, maximum height and half-width. [ 1 ]

4. Free spectral range - Wikipedia

   en.wikipedia.org/wiki/Free_spectral_range

   The free spectral range of a diffraction grating is the largest wavelength range for a given order that does not overlap the same range in an adjacent order. If the ( m + 1)-th order of λ {\displaystyle \lambda } and m -th order of ( λ + Δ λ ) {\displaystyle (\lambda +\Delta \lambda )} lie at the same angle, then

5. Alabama A&M LB Medrick Burnett Jr. dies after head injury ...

   www.aol.com/sports/alabsms-m-lb-medrick-burnett...

   Alabama A&M linebacker Medrick Burnett Jr. has died, approximately five weeks after suffering an injury in a head-to-head collision during the Bulldogs' game against Alabama State on Oct. 29. He ...

6. Ukrainian mayor laid to rest after death in Russian captivity

   www.aol.com/news/ukrainian-mayor-laid-rest-death...

   As Russian troops approached Dniprorudne in their February 2022 invasion of Ukraine, the city's long-term mayor Yevhen Matvieiev could have fled to safety. Instead, he stayed behind to coordinate ...

7. Spectrum (physical sciences) - Wikipedia

   en.wikipedia.org/wiki/Spectrum_(physical_sciences)

   The classical example of a continuous spectrum, from which the name is derived, is the part of the spectrum of the light emitted by excited atoms of hydrogen that is due to free electrons becoming bound to a hydrogen ion and emitting photons, which are smoothly spread over a wide range of wavelengths, in contrast to the discrete lines due to ...