Experiments
Little Laboratory
I
Wave Superposition
What happens where two waves share one string?
Two travelling sine waves and their sum, drawn on the same string. Set each amplitude and wavelength and the phase between them, then watch where the displacements reinforce one another and where they cancel.
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II
Gradient Descent
How does a step downhill find the bottom of a bowl?
A point on a bowl-shaped surface, moved downhill one step at a time against the gradient. Choose where it starts, how steep the bowl is and how large each step is, and see it settle, overshoot, or run away.
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III
Reaction Kinetics
How quickly does a reactant disappear when its rate is its own concentration?
An idealised first-order reaction, A → products. Set the starting concentration and the rate constant, then follow the exponential decay, its half-life, and the moment-by-moment rate.
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