Search results
Results from the WOW.Com Content Network
The wagon-wheel effect (alternatively called stagecoach-wheel effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation ...
English: This is a conversion & extension the "Spinning Dancer.gif file" with 34 frames & 1 second of play time to the OVG format with 2040 frames and 60 seconds of play time. The intent is to allow the user to start and stop the display without the distraction of continual play.
The illusion derives from the lack of visual cues for depth. For instance, as the dancer's arms move from viewer's left to right, it is possible to view her arms passing between her body and the viewer (that is, in the foreground of the picture, in which case she would be circling counterclockwise on her right foot) and it is also possible to view her arms as passing behind the dancer's body ...
Rowett has presented videos on the YouTube channel Grand Illusions since 2008. In each video, he lightheartedly demonstrates and reacts to at least one toy, puzzle, or optical illusion which is either part of his collection or will be stocked through an online toy store, run as part of the Grand Illusions brand (to which he is a director).
The toy is this video is known as a Newton’s Cradle, and operates on the principle of conservation of energy and momentum. If you haven’t played with one before, the construction is simple.
A spinning rectangular thaumatrope with the alternating letters of the name "Victoria" on each side, showed the full word with the letters at two different distances from the observer's eye. If the two strings of the thaumatrope are attached to the same side of the card the thickness of the card accounts for a small difference in the distances ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
People get extra during the holidays, 'doing the most' to spread Christmas cheer with huge Santa Claus inflatables or massive LED light displays.