These are many used to concentrate the sun’s rays to make a hot spot. Parabolic troughs are solar thermal collectors that are curved in three dimensions as a parabola, lined with polished metal mirrors. When you throw a stone, it arcs up into the air and comes down again, following the path of a parabola.Ī satellite dish is a type of parabolic antenna that receives or transmits information by radio waves to or from a communication satellite. When you shoot an arrow, it arcs up into the air and comes down again, following the path of a parabola. When you kick a soccer ball, it arcs up into the air and comes down again, following the path of a parabola. The rays incident parallel to the axis of symmetry get reflected off the surface and converge at the focus. Tangents drawn to any point on the directrix are perpendicular.ħ. The vertex is the midpoint of the focus and the point of intersection of the directrix and axis.Ħ. A tangent drawn at the vertex of a parabola is parallel to the directrix.ĥ. The axis of symmetry passes through the vertex and the focus and is perpendicular to the directrix.Ĥ. Parabolas are symmetric about their axis.ģ. Eccentricity is the measure of the amount by which a figure deviates from a circle. It is located right in the middle of the focus and the directrix. Vertex is the point where the parabola makes its sharpest turn. The axis of symmetry is an imaginary straight line that is perpendicular to the directrix and passes through the focus. Directrix is perpendicular to the axis of symmetry of the parabola. Here, the fixed straight line is known as the directrix. DirectrixĪny point on the parabola is equidistant from a fixed point and a fixed straight line. It lies on the axis of symmetry of the parabola. Here, the fixed point is known as the focus. Any point on the parabola is equidistant from a fixed point and a fixed straight line.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |