In the video I briefly discuss that the space heater creates a convection current, but I would like to go into further detail about convection currents so you can better understand how this gizmo works! If you have ever taken any grade school science class, I'm sure you've gone over this topic. Convection currents can be made by any body of matter. The basics of how a convection current works is simple. When matter is heated, it becomes less dense, and when matter is cool it becomes more dense. As the less dense matter rises, the more dense matter falls. That is why when you are hot you tend to want to lay in the lowest area you can find. By looking at the figure to the left, you can see how the candle creates a small convection current in the air. The device that we created captures the heat of five flames, and adds more surface area to create a bigger convection current in the air. Once the air rises from the holes in the second pot, it creates a convection current of cool air that enters the bottom of the second pot, that then takes the heat from the first pot, and rises out of the holes into the air! The diagram below is an example of how a radiator creates convection currents to heat up a room. The candle powered space heater uses the exact same method.