If you could be transported back to van Helmont’s time, what would you tell him about the source of the willow’s weight gain?
In the mid-seventeenth century, Dutch scientist Jan Baptista van Helmont
struggled to understand where plants get the material that allows them
to grow larger. He planted a willow tree of a given weight in a fixed
quantity of soil and then, five years later, weighed both the willow and
the soil. He found that the tree had gained 164 pounds during the
period but the soil had lost very little weight. His conclusion was that
the willow’s weight gain came solely from the water it absorbed through
its roots. If you could be transported back to van Helmont’s time, what
would you tell him about the source of the willow’s weight gain?
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If you could be transported back to van Helmont’s time, what would you tell him about the source of the willow’s weight gain? was first posted on April 23, 2019 at 7:40 am.
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