An hourglass tells you what it is in the name — a glass that you use to measure an hour of time passing by. [EDISON SCIENCE CORNER] has built a digital project that mimics such a thing, with little ...

Bright light reduces feeding and weight gain in mice by activating a specific retina-to-brain pathway that signals through the visual thalamus to inhibit appetite-regulating neurons in the ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...