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    Main image for Hand Boilers, set of 4
  • Hand Boilers, set of 4

    730415 10508363090

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    These “boilers” are amazing—because they “boil” air, not liquid, and the air moves the liquid. Hold one in the palm of your hand for just a sec; as the vapor pressure rises, nontoxic liquid ethanol starts to bubble (but not boil) and move upward. Put your hand on the top and the liquid will go back down. No need for a boilers spoiler alert—to see this take place in sculpted tubular glass is always awesome! Set includes purple, green, red, and blue; all are approx. 7"H.

    • Hand boilers use the warmth of your hand to propel liquid through tubular glass
    • Hold in your hand for a bit and the nontoxic liquid ethanol will begin to move upward
    • Put your hand on the top and the liquid will move downward
    • Set includes purple, green, red, and blue

    For ages 8 and up.

    Size
    Approx. 7"H

    HearthSong Gift Wrap

Reviews
5.0
5.0 (based on 1 customer reviews)

By Grandma Jo
From
delightful small gift!
Comments about Product:
Yes, these are delicate, but they are fascinating and a perfect party favor, stocking or basket stuffer - or small Valentine's Day gift (especially the red heart shaped one!).
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simple
730415
1050836

$19.98

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