New Exhibits for Purchase Gravity Wells and Whisper Dishes
Gravity Well  Whisper Dish Specs Pricing Order Forms Printer-friendly version

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The Gravity Well is undoubtedly one of the most popular exhibits ever developed. Available since 1982, our Gravity Well can be seen in over 36 different states and 14 foreign countries.

Children and adults alike will spend hours orbiting steel balls (or coins) into the hyperbolic funnel and watching them accelerate and decelerate before dropping into the center hole. The exhibit combines a visual demonstration of Kepler's laws of planetary motion with the potential to raise money by using the Gravity Well as a donation-attracting device.

The Gravity Well is an ideal exhibit: low maintenance, free standing, self-contained, requires no electricity of other hook-ups, fun and appealing for all ages, and has profit potential. Several museums have told us that they average $1,000 - $5,000 per year in Gravity Well coin donations.

Our Gravity Well is museum quality, not to be confused with cheaper imitations. Construction is 3/16" fiberglass tooling resin with a gelcoat surface. The total diameter of the Well is 62.5" with an 18" vertical drop. The diameter of the central hole is 1.5". A 3.5" rim runs around the circumference of the Well.

Although the 62.5 " Well is best for orbiting time, many groups have asked for a smaller, more portable Well. In response, we are pleased to introduce a smaller 42" version, which will fit the same pedestal base as the original Gravity Well, but can be moved easily in the back of a standard van. Vertical drop is 15.5" with a 1.5" diameter central hole.





Gravity Well Pedestal Base
A matching fiberglass pedestal base holds the Gravity Well at a convenient 30" height for visitors to use. The bottom of the pedestal is 36" in diameter for stability, with vinyl edging for additional protection. A locking coin box (shown on right) within the base allows for retrieval of donations at leisure. For those who prefer not to use the exhibit as a donation attracting device, the cover of the coin box can be removed and the base will act as a chute to deliver the ball (or other object) back to the visitor.

Gravity Well Coin Slide
A deluxe bi-directional coin slide is available for both the 62.5" and 42" Gravity Wells. This is molded from the same resin as the well, itself, and is curved to fit securely within the rim, mounting with just two screws. Not only does the slide create a more finished appearance, it has the added advantage of allowing the visitor to launch coins in opposite directions at the same time. Contrasting colors between the slide and the well can create additional interest. If you already own one of our original coin slides, please note that the new bi-directional coin slide can be used as a replacement. The new slide will completely cover the previous mounting holes. Because of the superiority of the new molded slide, we are discontinuing our original hand-made acrylic coin slide.

Standard colors for the Gravity Well and Pedestal Base are either black or white. However, almost any color is available by special order. A particularly striking effect can be created by using separate contrasting colors for the Base and Well.

We are proud to offer the Gravity Well as a complete “turnkey” exhibit -- with molded hyperbolic curve, molded pedestal base and coin slide! Of course, the individual components can also be purchased separately. If you previously purchased one of our Gravity Wells without a base, the new pedestal base should fit it with no problem.

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