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      • Today, there's no doubt about the answer: Light is both a particle and a wave. But how did scientists reach this mind-bending conclusion? The starting point was to scientifically distinguish between waves and particles. "You would describe an object as a particle if you can identify it as a point in space," Sapienza said.
      www.livescience.com/physics-mathematics/particle-physics/is-light-a-particle-or-a-wave
  1. Light Waves. Light radiates from a source in waves. Each wave has two parts; an electric part, and a magnetic part. That's why light is called Electromagnetic Radiation.

  2. Einstein had a great explanation for this peculiar observation. He hypothesised light is made of particles, and is in fact not a wave. He then linked the intensity of light to the number of...

  3. Brian Clegg. Published: October 25, 2021 at 10:00 am. Is light a wave or a particle? Neither: light is its own unique phenomenon – the outcome of an interaction between electrical and magnetic fields – and it behaves like both waves and particles. Most of us were taught at school that light is a wave. This is because it does things that waves do.

    • Waves of Light
    • Colours of Light
    • To Summarise

    These different colours of light have different wavelengths and frequencies. Red light has the longest wavelength, and the lowest frequency of the visible spectrum. Violet has the shortest wavelength, and the highest frequency of the visible spectrum.

    Mixing coloured materials, such as paint, is an example of subtractive colour mixing. Red paint appears red to us because when white light strikes it, the red pigments reflect the red wavelengths of light and absorball of the wavelengths. This reflected light is what is seen by our eyes. The same is true for all of the other colours. So what about ...

    Light travels very fast - at the speed of light in fact!
    Light travels as waves.
    Light travels in straight lines.
  4. Light enters the box through the pinhole and an image is formed on the translucent screen. The image is upside down and smaller than the object. A ray diagram to show focusing in a pinhole camera...

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  6. The light particle conceived by Einstein is called a photon. The main point of his light quantum theory is the idea that light's energy is related to its oscillation frequency (known as frequency in the case of radio waves). Oscillation frequency is equal to the speed of light divided by its wavelength.