The dark detector circuit shown here can be used to produce an audible alarm when the light inside a room goes OFF. The circuit is build around timer IC NE555. A general purpose LDR is used for ...

LUX-ZEPLIN, an ultrasensitive dark matter detector, has cleared a major approval milestone and is on track to begin its mile-deep hunt for theoretical particles known as WIMPs in 2020. WIMPs are among ...