Related by context. Frequent words. (Click for all words.) 48 generator 43 vibrating 43 levitation 41 tuning fork 40 electrical 40 lightbulb 40 vacuum tubes 40 waterwheel 40 phonograph 39 strobe light 39 theremin 39 magnetic fields 39 electric 39 pendulums 39 generators 39 magneto 39 miniature 39 toaster 39 recharger 39 magnetism 39 battery powered 38 windmill 38 whirligig 38 electromagnets 38 flywheels 38 lava lamp 38 contraption 38 Exploratorium 38 potter wheel 38 volts 37 electromagnetism 37 light bulb 37 electrically 37 electromagnetic 37 solar powered 37 wind chime 37 chandelier 37 microwaves 37 kilowatt 37 geodesic dome 37 gyroscopic 36 volt battery 36 particle accelerators 36 turbine 36 experiments 36 inventor 36 vibrations 36 electrical socket 36 quantum mechanical 36 armature 36 piezoelectric 36 magnets 36 pulsations 36 atoms 36 physicist 36 bobbin 36 Nikola Tesla 36 magnetic 35 solar 35 superconductor 35 anemometer 35 levitated 35 coffeepot 35 cylindrical 35 motors 35 ham radio 35 vacuum cleaner 35 watt light bulb 35 vibrate 35 angular momentum 35 whirl 35 resonator 35 electro magnetic 35 optical illusions 35 electrically charged 35 actuators 35 magnetized 35 unhooked 35 contraptions 35 vibrated 34 rewired 34 toasters 34 pegboard 34 electron 34 pinball machine 34 galvanic 34 lightbulbs 34 dirigible 34 electrically powered 34 ionizing 34 Richard Feynman 34 theoretical physicist 34 Imagination Station 34 Slinky 34 electrostatic 34 donut shaped 34 tea kettle 34 whirling 34 hula hoops 34 pulleys 34 centrifugal force