Nicola Zocca started the Bill Light with a simple brief: to create a bulb with dimensions that vary in direct proportion with its brightness. The idea simplified even more when Nicola began using balloons—they approximate the shape of a light bulb, but the dimension is variable, creating a thinner wall as it gets larger, and, hence, producing a brighter light.

Though it's easy not to notice, the mechanical system supporting the balloon gesture is executed frictionlessly, made from copper pipes normally used in domestic water heating systems. The electrical components and air pump don't interfere with each other; the power supply cable exits the copper piping and jumps over the valve, allowing it to close. After pumping, the balloon stays well inflated, which means the entire system is airtight. To deflate, just open the valve and start anew.