This spark creates electromagnetic waves, with the two wires serving as transmission antennas to amplify the waves. You are actually both sending and receiving electromagnetic waves. His reply:“It's of no use whatsoever … this is just an experiment that proves Maestro Maxwell was right—we just have these mysterious electromagnetic waves that we cannot see with the naked eye. And of course, cell phone transmissions, Wi-Fi, and Bluetooth are all electromagnetic waves. It's literally everywhere—you’re swimming in a sea of electromagnetic waves.