Parallel rays, such as those from a very distance source, are focussed by a parabolic antenna so that they all meet at the focus of the parabola. This results in a stronger signal.
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No. If you tilt a parabola, you will still have a parabolic curve but it will no longer be a parabola.
Parabolic means that which is expressed by a parable. This word can also be used to describe something that resembles or is part of a parabola or paraboloid. Parabolic has the same meaning as parabolical.
A parabola is a curved shape that is plotted on the Cartesian plane.
Yes
Yes, but a parabola, itself, can have only a vertical line of symmetry.