WEBVTT

NOTE Neural narration; phrase times estimated within exact synthesized scene segments.

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Try a flat strip. Hold a paper strip between two supports.

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A flat strip bends easily under a small central load.

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Fold a channel. Fold the long edges upward into a shallow

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channel. Keep the same paper and support spacing.

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Compare gently. The folded shape places some material farther from the

6
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bending centre, changing its bending stiffness.

7
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Test fairly. Use identical sheets, spans and loads. Compare the deflection;

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paper direction and creases also affect the result.