Any fluorescent bulb held near this simple modern side table design by Florian Dussopt will ‘magically’ turn on without being plugged into a power source. The EM (electromagnetic) table activates the bulbs with an embedded circuit that affects the mercury gas inside them, making them glow.
The electronic circuit in the table turns a low current into an electromagnetic field, creating an invisible field of energy that users can interact with by holding fluorescent bulbs above its surface. Of course, you don’t want to bring any electronics anywhere near it unless you want them to stop working.
The table appears to be a tribute to Nikola Tesla’s Wardenclyffe Tower, which attempted a similar feat on a much larger scale. Tesla hoped to use the same sort of electromagnetic field to transmit wireless electricity, but was never successful.