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Witchcraft, witchcraft, WITCHCRAFT!!! (Original Post)
Blue_Tires
Dec 2018
OP
IllinoisBirdWatcher
(2,315 posts)1. Cool video. Thanks for shariing. eom
jberryhill
(62,444 posts)2. .
https://en.wikipedia.org/wiki/Harry_Nyquist
https://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem
In the field of digital signal processing, the sampling theorem is a fundamental bridge between continuous-time signals (often called "analog signals" and discrete-time signals (often called "digital signals" . It establishes a sufficient condition for a sample rate that permits a discrete sequence of samples to capture all the information from a continuous-time signal of finite bandwidth.
https://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem
In the field of digital signal processing, the sampling theorem is a fundamental bridge between continuous-time signals (often called "analog signals" and discrete-time signals (often called "digital signals" . It establishes a sufficient condition for a sample rate that permits a discrete sequence of samples to capture all the information from a continuous-time signal of finite bandwidth.
underpants
(182,803 posts)5. Harry Nyquist
Have to read up on that. Thanks
jberryhill
(62,444 posts)6. One application of the Nyquist sampling theorem....
...is that the frame rate of a motion capture device needs to be a submultiple of the period of any oscillating or rotating objects in the image.
It's why wagon wheels "spin backwards" in a lot of movies.
Haggis for Breakfast
(6,831 posts)9. Are you people speaking English ?
Where's Judi ??
underpants
(182,803 posts)3. Pretty cool
Floyd R. Turbo
(26,546 posts)4. Very cool!
Wounded Bear
(58,656 posts)7. Any sufficiently advanced technology...
is indistinguishable from magic.
-Arthur C. Clarke
https://en.wikiquote.org/wiki/Arthur_C._Clarke#On_Clarke's_Laws
The Polack MSgt
(13,188 posts)8. An old favorite of mine. Semi-related
Not exactly the frame rate synch, but the digital camera/propeller photo distortion
http://resourcemagonline.com/2015/11/why-your-camera-makes-airplane-propellers-look-so-weird/60421/