LIGHT: A FUNDAMENTAL FORCE IN OUR WORLD
             If asked what light is, one could say that it's one of the most basic
             elements of our world and our universe as we perceive it. It is through
             sight that we receive 90% of our information. It is through the use of
             telescopes aiding the naked eye that we are aware of the heavenly bodies
             around us. It is through light that the energy from the sun is transferred
             to us. The sun's energy supports the food chain; plants use it to turn
             water and CO2 into energy usable by other organisms. Solar energy was also
             used, indirectly, to produce all of the fossil fuels that we consume daily.
             Since light is such a basic part of our existence, we should have a basic
             What we call light, the intangible, powerful force that powers our world,
             is somewhat hard to define in real terms. It shares properties with both
             particles and waves. It follows the same rules as a wave does--it moves in
             a regular fashion, in a perfect sine wave at a certain frequency. It
             travels in a straight line, and is subject to refraction. All of these
             characteristics are found in waves of any type, from radio frequency waves,
             up to Gamma and X- rays. Light, however, also exhibits qualities
             characteristic of particles such as neutrons and protons. A photon, or
             quanta, is the "packet" of energy that is sent in a light wave. Like a
             particle, the photon is believed to have a finite mass, and has the ability
             to affect other matter. As light strikes a photovoltaic solar cell, it
             knocks electrons in the silicon atoms on the surface into a higher state of
             energy. When these return to their normal, or "ground" state, energy is
             produced in the form of electricity. Thus, light is termed a
             "wave-particle," and this property is called the "wave-particle duality of
             nature." Many questions concerning what makes up light still lie
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