Latest Steven Cummer Stories
Engineers at Duke University have demonstrated the world’s first three-dimensional acoustic cloaking device. The scientists reported that they have created a new device that reroutes sound waves...
Scientists have developed a new device that makes objects invisible to sound waves.
Duke University researchers have captured images of lightning bolts shooting upwards.
Contrary to earlier predictions, Duke University engineers have found that a three-dimensional sound cloak is possible, at least in theory.
Giant red blobs, picket fences, upward branching carrots, and tentacled octopi -- these are just a few of the phrases used to describe sprites -- spectacular, eerie flashes of colored light high above the tops of powerful thunderstorms that can travel up to 50 miles high in the atmosphere.
- In medieval musical notation, a sign or neume denoting a shake or trill.