waves

3 articles · All tags

• Why Is the Sky Blue? Rayleigh Scattering Explained
  The sky is blue because air molecules scatter short-wavelength blue light far more than red light — Rayleigh scattering — and the same effect paints sunsets red.
• Electromagnetic Spectrum
  The continuous range of electromagnetic radiation from radio waves to gamma rays, classified by frequency and wavelength.
• Doppler Effect
  The change in the observed frequency of a wave when the source and the observer move relative to each other.