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Bubble Timer

SKU #TIM-212
Review star icon Review star icon Review star icon Review star icon Review star icon (5 reviews)
Availability: In Stock
Qty.
Observe this beautiful display of physics, surface tension, and geometry!

Description

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") tall.

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Reviews

5 reviews
teacher-2nd grade
Review star icon Review star icon Review star icon Review star icon Review star icon Nov 27, 2017
My grandchildren love theirs. I bought one for each of my older grandchildren. They are very interesting to watch. I often play with mine while I am grading papers. I wish there were some made of plastic for my younger grandchildren and for my class at school. Guest in my home enjoy playing with my timer too.
c.davies

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Science Instructor
Review star icon Review star icon Review star icon Review star icon Review star icon Feb 10, 2016
This timer was a great one to add to our collection Although not precise due to the nature of its "timing medium of bubbles" the students have fun watching how the duration changes with how much bubbles there are.
Victoria Rushing

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Better than expected!
Review star icon Review star icon Review star icon Review star icon Review star icon Dec 28, 2015
Very fun to watch!
Spencer

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not for young children
Review star icon Review star icon Review star icon Review star icon Review star icon Dec 30, 2014
Perhaps I ordered this item in too much of a hurry! This is a breakable item containing a somewhat hazardous chemical. I ordered it for a three year old but the package says not for children under 12.
Sue

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2   0

Not worth the cost
Review star icon Review star icon Review star icon Review star icon Review star icon Nov 22, 2014
Interesting to watch, when it works - which is only about half the time. The blue liquid frequently stops midway through, so to use it as a timer for students is impractical. As a visual toy it's only kind of neat.
Steven Burbank
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.

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