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.
The K-Style gutter system is the most popular gutter type. This is a seamless gutter system and we use aluminum so you will not have to worry about the gutters rusting out and falling apart. Another commonly used metal is galvanized steel, this will eventually rust and fall apart causing issues to your fascia board.