Help with photography flash Circuit

A Research team at Penn State lead by Professor Qing Wang has developed the first dielectric that can restore multiple functions after multiple breaks

Researchers from Stanford University have created an experimental setup that may see future cameras and other light detecting systems record both intensity and angle of incoming light. What applications does angular detection offer? How does it work? And what does this story have to do with Gecko ears?

What counts as an environmental sensor anyway? Check out some of the leading environmental sensors and what they measure.