Discussion in 'The Watering Hole' started by pdh, Oct 16, 2014.
also sines and things ...
Yummy, polar coordinates, I used to enjoy those Can't thing why I didn't come up with those equations on one of my sleepless nights, although perhaps it was because i never realised there was a problem, having never photographed a revolving propellor. I do have some flapping dragonfly wings that might be as a result of the same phenomenon, though on reflection probably not.
I cannot resist posting this ...
and before anyone gets all "what-are-the-kids-of-today-coming-to?" about her, I'll just say I think if she were my daughter, I'd be proud to see her asking such an astute question
An interesting article, as I have found myself wondering about the weird shapes you see in digital images of propeller blades. They are clearly scanning artefacts, but I've never seen a good explanation until now.
Alias effects in spinning stagecoach wheels in old cowboy movies were much easier to understand.
All of this reallly makes me look forward to Sony's rumored global shutter sensor.
I think I'll just scuttle back to the Mailonline ! Interesting indeed but I can't even begin to understand anything but the picture examples
Takes me back some 50 years when I understood the maths.
Ah, good stuff. Clears out the cobwebs in my brain.
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