Hold the bottom for some cool bubbling action! Heat from your hand warms the air in the boiler causing it to expand. As a result, the air forces the liquid up the twisting glass tube and then bubbles through it. Demonstrate the power of energy transfer with this intriguing liquid motion gadget. Everyone is hot, hot, hot with this boiler. Colour and shapes vary.
Age: Not a toy and not intended for use by children. Made of glass.
What You Get
Handboiler measuring approximately 17cm high in attractive gift box.
How it works
This lovely glass sculpture demonstrates Charles's Law and vapour-liquid equilibrium. The enclosed coloured liquid is a mixture of volatile liquids with a boiling point just above room temperature. However the liquid does not actually boil. It's the expanded warm air that causes a pressure difference between the two bulbs, and liquid movement. The liquid moves from the higher pressure bulb to the bulb with lower pressure, then, as the gas inside continues to expand, it bubbles through the liquid creating a cool boiling effect. Given the liquid inside is volatile, the boiler is even more effective: easily 'boiling' every time.
- Charles's Law
- Vapour-liquid equilibrium
- Volatile liquids
- Energy transfer
- Gas pressure laws
WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.
|Age Group||12+ Years|
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Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process. Please conact us if you have any queries with these services.
In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.
How long will it take for my order to arrive?.
You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.
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International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.
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We ship to both Australian and International customers.
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The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.
We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.