Folding Filter Paper (Steps 1-4)
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|Step 1:||Begin by folding a large filter
paper in half. In this and other steps, use pressure to crease the paper.
NOTE: Various sizes of Watman #1 filter paper (standard porosity) are self-serve items at the Service Center counter. The largest of the self-serve papers (11 cm) fits our wide-stem funnels.
NOTE: Some of these steps may be difficult to visualize if using a lower-resolution monitor).
|Step 2:||The half circle is folded as follows: fold both edges in toward an imaginary center line which bisects the half-circle. The edges meet at the center.|
|Step 3:||Next fold the edges which had
just been brought in contact backwards to meet the outer edges. Press to
crease the folds.
The shadow of the folded paper is a quadrant.
©2001,2002 Daniel A. Straus
|One side is folded toward the
other and creased as shown.
The shadow of the folded paper is now an octant.
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