Get a Sp!n Top here:
From Art of Play: BUY NOW: Sp!n Top
Sp!n Top: once set into motion the eye only perceives the punctuation mark ! in the center of a ring, with the vertical line seemingly suspended in space above the dot. The rate of spin is above the flicker fusion threshold of human vision, and the crossbars become blurred out and invisible- the effect is even more pronounced in person (hard to capture on video). Physics and psychophysics combine to produce this wonderful illusion!
Five animations to choose from- collect them all!
From Art fo Play: BUY NOW: Dot Animation Cards
Dot Animation Cards: a unique version of barrier-grid (kinegram) animation where a matrix of holes allows only some of the dots on the covered card to show in succession producing the appearance of motion. In this clever design rotating the card with dots by 180 degrees reveals a second animation. Affordable kinetic art by Shigeki Naito that plays on the psychophysics of vision.
Get one there:
From Art of Play: BUY NOW: Dymaxion Folding Globe
Dymaxion Map: today some math fun with this unique mapping of the Earth where the globe is projected onto an icosahedron and then unfolded onto two dimensions. Invented by the famous architect R. Buckminster Fuller, the Dymaxion projection map is designed such that it does not have a “right way up” and showing the continents as “one island Earth”. This mapping also produces less distortion of relative areas and shapes- note here that Greenland looks, correctly, much smaller than Africa- unlike what is seen on many world maps where they look the same size. This version, designed by Brendan Ravenhill, uses flat magnets to allow a very satisfying transformation between the flat 2D net and the 3D icosahedron “globe”.
Get this well made woodworked illuson here:
From Art of Play: BUY NOW: Kellar Trivet
More on the second illusion: Skye Cafe Illusion
Café Wall Illusion Trivet: slide half the bars and to the right the lines look parallel and straight, slide them back to the left and the illusion of crookedness returns. Note that even after we verify the lines are parallel, our perception still misleads- a reminder that we need science to transcend the limits of our senses and cognition. A creative woodworked trivet for the kitchen table by Tony Potter. Swipe to view an award winning version of this illusion by Victoria Skye.