Jan Ingenhousz and the Secret of Light: How Plants Were Found to Feed Themselves
Jan Ingenhousz and the Secret of Light: How Plants Were Found to Feed Themselves In 1779, a Dutch physician named Jan Ingenhousz spent one summer in...
In 1779, a Dutch physician named Jan Ingenhousz spent one summer in England conducting experiments with plants submerged in water.
He was watching for bubbles.
What he found in those bubbles answered one of the most fundamental questions in agriculture — a question farmers had been working around for ten thousand years without knowing it was there.
The Question No One Had Asked
Farmers knew that plants grew.
They knew that some soils were more fertile than others. They knew that manure helped. They knew that water was necessary. They knew that sunlight was necessary.
But the relationship between light and plant growth was not understood as a chemical process.
It was understood as a condition — like warmth, like moisture — something plants needed, without a clear mechanism for why.
Jan Ingenhousz found the mechanism.
What He Did
Ingenhousz placed aquatic plants in water and...
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