Energy of a photon : E = hf The photoelectric effect works like this. If you shine light of high enough energy on to a metal, electrons will be emitted from the metal. Light below a certain threshold frequency, no matter how intense, will not cause any electrons to be emitted.
The Boogie Board Jot 8.5 is an uber-slim slate with a black 8.5â³ screen. The stylus clicks into the opening under the screen. When you use the stylus it writes on the screen in a bright green color. The company claims this board is 50% brighter than their previous Jot model.
96 IN STOCK. 1  Description Description- This breakout board will solve all your power-monitoring problems. 2  Technical Details Technical Details+ Datasheet, Fritzing, and EagleCAD PCB files available in the product tutorial. 3  Learn Learn+ Adafruit INA219 Current Sensor Breakout.