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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. Electromagnetic spectrum - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_spectrum

    A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths. The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.

  4. Wordsum - Wikipedia

    en.wikipedia.org/wiki/Wordsum

    Wordsum is a 10-item vocabulary test that has been included as an item on the General Social Survey (GSS) in most survey years since 1974. [1] Each of the test's items ranges in difficulty from very easy to very difficult. It is widely used in research in the social and behavioral sciences. [2]

  5. Light - Wikipedia

    en.wikipedia.org/wiki/Light

    A common thermal light source in history is the glowing solid particles in flames, but these also emit most of their radiation in the infrared and only a fraction in the visible spectrum. The peak of the black-body spectrum is in the deep infrared, at about 10 micrometre wavelength, for relatively cool objects like human beings. As the ...

  6. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    Goethe argued that the continuous spectrum was a compound phenomenon. Where Newton narrowed the beam of light to isolate the phenomenon, Goethe observed that a wider aperture produces not a spectrum but rather reddish-yellow and blue-cyan edges with white between them. The spectrum appears only when these edges are close enough to overlap.

  7. How strong are your finances, really? Part two: 4 more money ...

    www.aol.com/finance/more-financial-questions-to...

    Renters insurance. Even if you don’t own your home, it’s worth it to invest in renters insurance that can cover you, your valuables and your living expenses against damage, theft and other loss.