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# The Properties of the Parabolic Reflector

A Parabolic Reflector is parabola revolved around upon its axis where the line segment joins the axis and focus A number of real-life devices use this property A few examples of them would be the shapes of car headlights mirrors in reflecting telescopes televisions and radio antennas Car headlights for example light rays are reflected from the focus in parallel rays All of the light is aimed at one spot thus giving you a bright light to drive with A dish has the optimum parabolic reflection It pulls the most light to the middle focus The reflecting surface has a three-dimensional shape called a paraboloid The paraboloid is what actually directs all the light to the middle point called the point focus The paraboloids actual definition is the set of points equidistant from a fixed point the focus and a plane the directrix It is straightforward to show that this geometric configuration can work for our purpose The formula that shows that parabolic reflectors mathematically work is the equation This proves that any paraboloid will work as a reflecting antenna focusing incoming rays parallel to the axis of symmetry to a point The purpose of this project was to learn what parabolic reflectors are and do and how do real life examples use this property I have learned that without them you couldnt have modern day television you couldnt have bright headlights to keep you safe at night you couldnt have solar powered fire lighters which is neat in itself and certainly NASA could not have studied as much about our universe for the betterment of mankind as they have thus far NASA uses them in the world famous Hubble Space Telescope which is used to see images from millions of miles away and they are also used in space craft such as the Pluto also used to

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