Pacific Science Center Kugel - Seattle, WA - Kugel Balls on Waymarking.com

This ball is so cool. I'm not sure how long it's been here, but I've remember it forever, it seems. People are always having fun with it. If it's not been used for a while, it's a bit hard to get started. An adult might have to help. But once it's going and completely wet, it gets easier, and even a little kid can push it.

Here is the website of the company that created the ball: Seattle Solstice. Check out some of the links to see some info about the Pacific Science Center rolling ball, and rolling balls in general.

This is what it says on the sign for the Kugel Ball:

"Rolling Ball

This granite ball weighs 4,000 pounds, but you can roll it by yourself! Why?

A Cushion of Water
A pump pushes water into the base. The ball is in the way, so the water has to push it up in order to flow out.
* The ball rides on a thin layer of water.
* There's not much friction between the ball and the water, so it's easier to push it around.

How hard does the water have to push? Not as hard as you might think. The water's ability to lift depends on how much of the ball's surface the water pushes on.

* The greater the area, the less each square inch of water has to push.
* If the water is pushed on only one square inch of the ball, that square inch of water would have to lift all 4,000 pounds.
* Because the water pushes on a greater area, each square inch only has to lift about 20 pounds - no more than the water pressure in your faucets at home.

This exhibit dedicated to Richard Clotfelter in recognition of his leadership and commitment to Pacific Science Center's Capital Campaign. He kept the ball rolling.

Board of directors
1981 - 93

Honorary Chairman
1990 - 93

Chairman
1988 - 90

President
1987 - 88"

Where is this ball located: On the ground floor of the open courtyard at the center of the Seattle Pacific Science Center In use?: Yes Material: Black Granite Can you push it around?: Yes

Visit Instructions:
Describe your experience at the Kugel. Attempt to include a photograph of it.

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