The Super-Kamiokande detector in Japan, an underground tank that holds 50 million liters of water, captures neutrinos that emanate from a particle accelerator nearly 300 kilometers away. When a neutrino hits the detector, it can produce charged particles, whose high speed through the water emits a flash of light, triggering phototubes mounted in the walls of the Super-K tank. The experiment investigates muon neutrinos transforming into electron neutrinos.
Installing a Remote Motion Detector for Lighting: A remote sensor automatically lights up dark sidewalks and yards. And it'll operate any light fixture. In this story, we'll show you how to install a remote motion detector to your outside lights. http://www.familyhandyman.com/electrical/wiring-switches/installing-a-remote-motion-detector-for-lighting/view-all
Halo Smoke Detector. Halo is a smart smoke detector that warns you of smoke, fire, & CO2 levels, plus it provides alerts for natural disaster warnings like earthquakes & tornadoes – even when the internet & TV are out. The Halo backup battery lasts 7 days in the event of a power outage.
Lights turn on automatically when entering a room. After the room is left unoccupied the lights turn off. I have one in my pantry and laundry room since my hands are always full when leaving. Best money ever spent!