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Concave mirror
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Euler's disk
The Euler's Disc, you place it in the middle of a mirror and set it running, it goes on for some time. This extraordinary toy I came across about 10 years ago in New York and I've...
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#concave mirror
#tumblr effect
#buymethis
#mirror effect
#disk
#à table
#curiousthing
#Grand Optical
#mirrored table
#rowett
#paavo
#Science & Technology
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