Pandipedia entry
Two spinning wheels gave roots two different directions
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- Which way will the roots grow?
Seeds rode on two spinning wheels: one upright, one flat. The roots took different directions.
- Upright wheel: roots point out
Roots grew away from the axle; shoots bent inward. As the wheel turned, gravity changed direction relative to each seed.
- Flat wheel: out and down
Here, gravity stayed downward relative to the seeds. The roots grew outward and downward. Spinning had not switched gravity off.
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