Principle of photon energy storage experiment

What is the kinetic energy of a photon at 300 nm?

CQ: A photon at 300 nm will kick out an electron with an amount of kinetic energy, KE300. If the wavelength is halved to 150 nm and the photon hits an electron in the metal with same energy as the previous electron, the energy of the electron coming out is less than 1⁄2 KE300. CQ: Shine in light of 300 nm.

What are the results of a photoelectric experiment?

Summary of Photoelectric experiment results. Current linearly proportional to intensity. Current appears with no delay. Electrons only emitted if frequency of light exceeds a threshold. (same as “if wavelength short enough”). Maximum energy that electrons come off with increases linearly with frequency (=1/wavelength).

What is photoelectric effect Experiment Apparatus?

Photoelectric effect experiment apparatus. So if light is classical wave, predict that just puts energy into plate, heats up, get diode current voltage curve. Also takes time to heat up. Light on longer, heat more, e’s out faster = more current. Color light does not matter, only intensity. Have now covered. I. How apparatus works. II.

What makes the Eon of the photoanode as negative as possible?

In order to obtain a high photocurrent density in an integrated PEC system, we need the Eon of the photoanode as negative as possible. This is because the goal of the system is to have the J–E curve of the photoanode intercept that of the photocathode at a high point (Jop).

How do photons give Electron 'kick of energy'?

Photon gives electron “kick of energy”. Max KE of electrons = photon energy - Min KE = 0 Some electrons, not enough energy to pop-out, energy into heat. Electrons over large range of energy have equal chance of absorbing photons. You initially have blue light shining on metal.

Why do chlorophylls absorb photons in PSII?

Chlorophylls in PSII absorb photons to enable charge separation for the creation of P 680+ —Pheo −. The concerted activity of the oxygen evolving center (OEC, Mn4 Ca-cluster) is critical to the functionality of PSII.