ILLUMINATED VOLT METER WITH THERMODYNAMIC BUBBLER
This example of our remarkable bubblers "boils" in response to heat from its bulbs, which may be dimmed or brightened as you see fit. It will burble away on its own in an enchanting manner for hours; once the liquid rises to the top after quite some time, simply cup your hand around the top bulb; the heat of your palm will return the liquid to the bottom to burble up again. Enjoy a demonstration of a nearly identical piece in action below...
This particular piece is set on a handsome vintage volt meter (disabled).
How it works: As the heat from the bulbs warms the liquid (Ethyl alcohol) in the lower vial, it turns some of it into vapor. The natural expansion of the vapor up toward the cool end of the vial forces the remaining liquid up as well, creating a "boiling" effect. Cupping a warm hand around the top of the vial reverses the effect by reducing the temperature differential between the two ends of the vial; gravity then takes over to bring the remaining liquid downward again. The vial sits in a flexible pivot stand, so if it takes a bump, it avoids breaking and can be easily set upright again.
You will find different sizes, shapes and styles of bubblers in our store; please peruse them to determine which suits your fancy. A mesmerizing and elegant piece that demonstrates Charles's Law of thermodynamic equilibrium
The bulbs are pleasantly warm and bright, with a slight amber hue and a subtle gold mirrored finish, very easy on the eye. Our bulbs are rated to last 3,000 hours at full brightness and much longer if dimmed at all. Extra replacement bulbs are ready available for a mere $5 each.
All electrical materials used are UL, CE, and/or CCC approved. Like all of our pieces, it has been thoroughly tested for reliability and soundness.
Your satisfaction ensured: Should this piece ever require servicing apart from bulb replacement, accident, or misuse, we will promptly set things right to your satisfaction at no charge save shipping.