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Grand Illusions Pit and Pendulum 12" Creating Designs in Sand |  | Brand: Grand Illusions
Category: Toy
Buy New: $39.95
as of 9/4/2010 16:04 CDT details
Seller: Scientifics Online
Rating:  2 reviews
Availability: Usually ships in 1-2 business days
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| Features:
| • | Create one-of-a kind, intricate designs in the sand with this elegant pendulum | | • | Each swing of the pendulum will calm and mesmerize you with its rhythmic motion | | • | Makes a great executive gift, home accent or meditation tool | | • | Simply get the pendulum arm moving and watch as gravity creates ever changing geometric patterns from circles and ovals to rectangles and squares | | • | The Sand Pendulum demonstrates real science as it converts kinetic energy into potential energy |
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| Editorial Reviews:
Product Description
Mesmerizing and addictive! More than an elegant desktop execu-toy (although it is that too!) The Pit and Pendulum demonstrates real science. -- Secured in its oak stand, the all metal pendulum converts kinetic energy into potential energy. The extremely fine sand (included) provides minimal friction allowing the pendulum to swing for extended periods of time. As the pendulum swings it gently "writes" ever changing geometic patterns in the sand. The patterns get bigger then smaller then bigger again as the arc of the pendulum also changes. -- Comes with a 12" black stand with bowl-type base, bag of sand, and instructions.
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| Customer Reviews:
Sand Pendulum March 7, 2009
James Brett Barley
i got this as a present fo rmy dad for his birthday. he loves it, and i do too. fun to see how it works.
physics and geometry made fun March 27, 2009
Vickie Groover (Wyoming)
I got this for my grandson because we saw them at a ski resort. He and my daughter love watching the circles and ellipticals and yes, near squares. There were some for sale for no less than $[...] dollars and we felt this would be great for a 12 year old.
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