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.
2. Do a varial kickflip. A varial kickflip is a combination of a kickflip and and a shove-it, where the board spins around 180 degrees as it flips. You can achieve the shove-it rotation by popping the board on the toe side of the tail, then flicking the nose with your front foot to achieve the flip. Your front foot should be placed just behind the bolts on your board, pointing slightly towards the front at a 45 degree angle. 2  The ball of your back foot should be perched on the tail of your board. 3  Don't hunch forwards, keeping your shoulders in line with your board.