If a Moire pattern can be photographed using a film camera then there are moire patterns which exist without a sampling device.
Harry On Thu., Oct. 15, 2020, 9:37 a.m. Bob Higgins, <rj.bob.higg...@gmail.com> wrote: > The Moire effect is the result of spatial undersampling an image, and the > Moire pattern is the aliasing. This is the reason that Canon and many > other camera manufacturers put an optical blurring filter in front of the > image sensor. The blurring filter is a spatial lowpass filter to prevent > the aliasing of spatial frequencies above the sampling frequency / 2. > > Sampling is fundamentally a nonlinear process and thus the beat can > occur. That it can show up visually in the eye testifies to the sampling > within the eye. > > On Thu, Oct 15, 2020 at 6:28 AM H LV <hveeder...@gmail.com> wrote: > >> >> Moire patterns are like beats without waves. >> >> Moiré Kit >> 1.https://www.youtube.com/watch?v=4nn1MqCMa1M >> >> 2. Moire pattern effect >> https://www.youtube.com/watch?v=QZYpEMp87Xo >> >> 3. What Are Moire Patterns? (Mr. Wizard) >> https://www.youtube.com/watch?v=W8Jf9SVsT38 >> >> 4. Freaky Dot Patterns - Numberphile >> https://www.youtube.com/watch?v=QAja2jp1VjE >> >> Harry >> >> >> >>
