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For a definition and construction of a parabola Go here. For an investigation of the equation of a parabola Go here.
TUTORIAL
click on start and you will see rays homing onto the surface of a
parabola. What do you notice after reflection on the inner surface of the
parabola ?
All the incoming energy (light, radio waves,..) , in the form of rays parallel to the axis of the parabola, is focused at one point called the focus. Many applications of the parabolic shape can be found in parabolic dishes used to receive satellite TV programs.
Conversely, rays emanating from the focus of a parabolic reflector, are all reflected parallel to the axis of the parabola. Parabolic antennas are also used to emit radiowaves and light. Large parabolic shapes are also used to collect solar energy.
More references and links to topics related to the parabolic reflectors and antennas.
Tutorial on How Parabolic Dish Antennas work?
Tutorial on how to Find The Focus of Parabolic Dish Antennas.
Dipole Antennas
Antenna Polarization
Antenna Arrays
Interactive tutorial on the Equation of a Parabola.
Interactive tutorial on how to find the equation of a parabola.
Define and Construct a Parabola.
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