|Physics – Concepts – Nature of Light|
|We have covered quite a chunk of information in this Physics portions of the website. All that is left is to officially introduce light.As we already know, Sir Isaac Newton discovered light consists of fundamental colors. Continued work by Sir William Herschel, Johann Ritter and Michael Faraday demonstrated the visible light is only a small portion of a much larger electro-magnetic spectrum. Albert Einsteinshowed us the true nature of light:
Thus light is both particle and wave.
Its easy to associate light with just the fundamental colors of the rainbow,
but this is only a tiny part – 400 nanometers (blue) to about 700 nanometers (red). Or 4000 angstroms to about 7000 angstroms.
Additionally, light is the fastest object in the Universe – traveling close to 300,000 km/s.