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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. Classical electromagnetism - Wikipedia

    en.wikipedia.org/wiki/Classical_electromagnetism

    A changing electromagnetic field propagates away from its origin in the form of a wave. These waves travel in vacuum at the speed of light and exist in a wide spectrum of wavelengths . Examples of the dynamic fields of electromagnetic radiation (in order of increasing frequency): radio waves , microwaves , light ( infrared , visible light and ...

  4. Electromagnetic radiation - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_radiation

    Each has an energy related to the frequency of the wave given by Planck's relation E = hf, where E is the energy of the photon, h is the Planck constant, 6.626 × 10 −34 J·s, and f is the frequency of the wave. [40] In a medium (other than vacuum), velocity factor or refractive index are considered, depending on frequency and application ...

  5. The Girl from Tomorrow - Wikipedia

    en.wikipedia.org/wiki/The_Girl_from_Tomorrow

    When the Time Capsule is programmed with a set of temporal co-ordinates it draws energy from the temporal flux generators and begins to spin slowly at first and then gathering speed, which is followed by two sounds: a saw wave sound gradually increasing in frequency and a looping sequence (sound that exponentially grows in frequency and then ...

  6. Electromagnetic spectrum - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_spectrum

    The electromagnetic waves in each of these bands have different characteristics, such as how they are produced, how they interact with matter, and their practical applications. Radio waves, at the low-frequency end of the spectrum, have the lowest photon energy and the longest wavelengths—thousands of kilometers, or more.

  7. Today's Wordle Hint, Answer for #1255 on Monday, November 25 ...

    www.aol.com/lifestyle/todays-wordle-hint-answer...

    Today's Wordle Answer for #1255 on Monday, November 25, 2024. Today's Wordle answer on Monday, November 25, 2024, is BROWN. How'd you do? Next: Catch up on other Wordle answers from this week.

  8. Introduction to electromagnetism - Wikipedia

    en.wikipedia.org/wiki/Introduction_to...

    In some materials, the electrons are bound to the atomic nuclei and so are not free to move around but the energy required to set them free is low. In these materials, called semiconductors , the conductivity is low at low temperatures but as the temperature is increased the electrons gain more thermal energy and the conductivity increases. [ 27 ]

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