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M5-43: SCHLIEREN EFFECT - WHITE LIGHT 9 years 7 months ago #1009

  • zzfixk21
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ID Code: M5-43
Purpose: White light Schlieren imaging of a candle flame.
Description: The lenses are positioned so that the condenser lens focuses the beam at the first sharp edge, which is at the focal point of L1, and the second edge is at the focal point of L2, with parallel light in between. The candle is positioned so that L2 forms an image of the candle on the screen. The two edges are then symmetrically moved into the beam such that the direct light is cut off, leaving only the light deflected by the candle flame on the screen. In the picture the Schlieren image of the flame can be seen in the central bright spot with the direct image of part of the candle flame above (actually below, before being inverted by the lens).
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