Chapter 7. John Logie Baird’s TV

You might have noticed when you did “Experiment 8: Brighter Stroboscope” that the label didn’t appear entirely solid. It had some motion blur. This happens because the light didn’t just flash on and off in an instant. It turned on, and turned off two thousandths of a second later. However, in those thousandths of a second, the fan blade had actually moved a noticable amount.

This is exactly the same reason you get motion blur in a still picture, and we can play with the phenomenon to produce some really interesting effects!

Experiment 9: Persistence of Vision

You’ll need:

Now follow these steps:

  1. Upload the following code (this is from ...

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