This glass Bubble Timer is a beautiful display of physics, surface tension, and geometry! Just turn it over to watch the colored liquid displace the air in the bottom bulb, creating more geometric bubbles every time! Takes approximately one minute. Color may vary. About 20 cm (7.5 inches) tall.
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Feb 10, 2016 | By Victoria Rushing of Houston, TX United States
Better than expected!
Dec 28, 2015 | By Spencer of Orange, TX United States
not for young children
Dec 30, 2014 | By Sue of Cincinnati, OH United States
Not worth the cost
Nov 22, 2014 | By Steven Burbank of Los Gatos, CA United States
Owner Response:Sorry for the disappointment, Steven. I wonder if the neck on yours is too small. If you are not completely satisfied with your purchase, please return it for a full refund.