The image on this card has an unusual property. When holding the card close up, the message reads Merry Christmas. When viewed from a distance it reads Bah! Humbug. It is one of a series of Duillusion Cards from www.pinsharp3d.co.uk.
Optical
This is a simple kinetic sculpture. When the red ball which hangs from the thread above is moved sideways and released, as it swings from side to side the image of it in the hemispherical mirror behind moves in the opposite direction. If the red ball swings in and out from the frame, the image of it creates other effects. From Design Marketing, 31 St. Johns Road, Croydon, Surrey, England.
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The September 2021 issue included:
– a 19th century dissecting drawer box.
– the Pipe of Wu Fang.
– the Watch Your Step “Unique Magic” children’s trick.
– a variety of jokes.
– Mickey Mouse and Lewis Davenport.
– optical illusions and optical surprises.
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When this plastic top is spinning all you see is an exclamation mark, the top of which is floating in space, surrounded by a hoop. The illustrations will clarify how the ingenious top is designed. Made in Japan by h concept. Designed by Jordi López Aguiló.
Opening the card reveals a 3D image made up of the card’s multiple layers. Made by www.eurekarp.com.
Purchased at the shop at the Egyptian Museum in Turin, Italy. This is an effective way of presenting an Egyptian mummy in a sarcophagus. Made in Germany by L.M. Kartenvertrieb.
This stereo viewer provides an excellent 3D image of Escher’s well known drawing. Published by www.courtesy.nl. Printed in The Netherlands.
Printed in Japan, this 3D lenticular card is of a higher quality than was generally available at the time.
There are two pieces to this card. The coloured image is on the card at the back. In the front, pivoted at the centre, is a clear piece of plastic printed with a series of black lines. As this top piece is rotated the resulting moiré fringes give the appearance of movement. Made by BIZARR verlag and printed in Germany.
The young lady winks as the card is tilted from side to side. Made by J. Arthur Dixon.