sound waves

Sound Waves Produce Touch Feedback – Without Touching

We all watch futuristic technological innovations in movies. Things like holographic computer displays that appear in mid-air on command without using any physical devices such as a¬†projectors. That’s right, I am talking about Iron-man, the tech freak hero who uses his hands to interact with the ultra-modern futuristic interface just like we interact with touchscreens

DARPA Produced Sonic Waves To Extinguish Fire

US Department of Defence’s famous agency “DARPA” (Defense Advanced Research Projects Agency) has produced a sonic fire extinguisher. It is used to extinguish light fires, for example flames in contained areas such cockpits. The whole concept around which this device revolves is sound. Shown below is an experiment conducted by the DARPA team in which

Mind Boggling Optical Illusion That Freezes The Water

  I am sure that when you are going to watch this video, you will be saying that its fake, but until we tell you how it is done you would be wrong about it. This mind boggling optical illusion makes you think twice as the water in it freezes, even reversed!   Now the