The important features of an ellipse are shown in the diagram below. The shape of an...

  

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The important features of an ellipse are shown in the diagram below. The shape of an ellipse is given by the ratio c:a, which is called the eccentricity (e). Note that the eccentricity of a circle is zero. Tear off the paper millimeter ruler on page five of this lab and use it to find e and a. Compute e. focus semi-major axis (a) mm semi-minor axis a a = _mm e = c/a = Place the bottom of this page on a cork board and insert a pin at each of the two foci. Place a loop of string around the two pins and draw the ellipse in the manner shown on page one. Measure e and a with the millimeter ruler and compute e. e = c/a= mm mm The important features of an ellipse are shown in the diagram below. The shape of an ellipse is given by the ratio c:a, which is called the eccentricity (e). Note that the eccentricity of a circle is zero. Tear off the paper millimeter ruler on page five of this lab and use it to find e and a. Compute e. focus semi-major axis (a) mm semi-minor axis a a = _mm e = c/a = Place the bottom of this page on a cork board and insert a pin at each of the two foci. Place a loop of string around the two pins and draw the ellipse in the manner shown on page one. Measure e and a with the millimeter ruler and compute e. e = c/a= mm mm

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