Is there a way to create visible/"liquid" energy? Probably a more low-brow topic than you're used to but I have plenty of gadgets, materials and tools at my disposal and I wish to improve the quality of some replicas I've made. A common denominator of any sci-fi gizmo is the glowing energy field. Star Trek, Stargate and even magic-based fantasy media frequently show what looks like globules of sold energy floating in the air to signify something happening and provide eye-candy for the audience. (best example I could find for now) Can such a thing ever exist? I've been thinking over some methods involving plasma but can't think of a way not to make it incredibly dangerous or not require a huge amount of power.