Infiltration of air into a flare system can lead to flame. burnback (also called flashback), which can initiate a. destructive detonation in the system. Burnback is one of. the primary modes of premature failure of a flare tip, and. can often be observed only at night. Air can enter the flare. system in one or more ways: through the stack exit by. buoyant exchange, wind action, or contraction of gases. due to cooling; through leaks in piping connections; or as.
Scale factor. The amount by which the image grows or shrinks is called the Scale Factor. Experiment with the scale factor slider to gets a feel for this idea. 1  If the scale factor is say 2, the image is enlarged so its dimensions are twice the original. 2  If it is 0.5, the image is reduced, with its dimensions half the original. 3  When the scale factor is 1, the image is the exact same size as the original.
They are not congruent because that requires them to be the same shape and the same size, which they are not (unless the scale factor happens to be 1.0). In the diagram above-click 'reset'. Dilation-of a polygon. A transformation in which a polygon is enlarged or reduced by a given factor around a given center point.Try this Adjust the slider on the right to change the scale factor. Drag the center point O. Dilation is where the polygon grows or shrinks but keeps the same overall shape.hings to try. 1  Move the center of dilation to the right, outside the rectangle ABCD. 2  Using the the instructions above under How to construct the dilation of an object, repeat the process with the center of dilation outside the triangle. 3  Repeat the construction with a scale factor of 0.5.