High Speed and Technical Photographs / 4707 twist

Prof. Andrew Davidhazy

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Twisting pattern described by rotating subjects along a line in space

Several subjects located at various distances from the center of a turntable spinning in front of a home-made "streak" camera that looks at a single line in space over time, describe sinusoidal traces whose slope at any given time is a function of the distance from the center of the turntable to their location on the turntable surface. The steeper the line the farther the object is from the turntable center. In this case time is displayed along the vertical axis and two twist patterns, one a mirror image of the other, were lined up to make a more interesting visual presentation.