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Distance Protection Relay

ImpedanceRelay2

Distance relays respond to the voltage and current, i.e., the impedance, at the relay location. The impedance per mile is fairly constant so these relays respond to the distance between the relay location and the fault location.

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Smart sensor, lets your smartphone hear in noisy parties

People trying to talk to Apple’s electronic personal assistant Siri in a crowded place may soon no longer have to look like they are about to eat their iPhones, thanks to a new invention by Duke University engineers.

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Color wings of butterfly

butterfly-color-butterflies-300x211

Butterflies possess some of the most striking color displays found in nature. As they fly from flower to flower gathering nectar, their brightly colored wings seem to shimmer and change colors before your eyes. A butterfly’s rich color can act as camouflage, mate attraction, and warning signal. But what is it that makes the bright colors of butterfly wings appear to dance? How can they possess such intense colors?

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New way to control light

lightcontrolcentralfloridax250

 

A device resembling a plastic honeycomb, yet infinitely smaller than a bee’s stinger, can steer light beams around tighter curves than ever before possible, while keeping the integrity and intensity of the beam intact.

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TV Remote Jammer Circuit

This proposed TV jammer circuit confuses the infrared receiver in a TV by producing the constant signal that interferes the remote control signal. If you switch on the circuit once, the TV will not receive any command from the remote. This allows you to watch your own program without anyone changing the channel or volume.

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