Pair Production & Annihilation Annihilation When a particle meets its antiparticle pair, the two will annihilate Annihilation is: When a particle meets its equivalent anti–particle they both ar...
Matter Waves De Broglie proposed that electrons travel through space as a wave This would explain why they can exhibit behaviour such as diffraction He therefore suggested that electrons must also ...
Solving Photoelectric Problems Since energy is always conserved, the energy of an incident photon is equal to: The work function + the maximum kinetic energy of the photoelectron The energy within ...
Observing the Photoelectric Effect The photoelectric effect can be observed on a gold leaf electroscope A plate of metal, usually zinc, is attached to a gold leaf, which initially has a negative ch...
The Photoelectric Effect The photoelectric effect is the phenomena in which electrons are emitted from the surface of a metal upon the absorption of electromagnetic radiation Electrons removed from...
Capacitor Discharge Equation The time constant is used in the exponential decay equations for the current, charge or potential difference (p.d) for a capacitor discharging through a resistor These ...
Exponential Discharge of a Capacitor Charging Capacitors are charged by a power supply (eg. a battery) When charging, the electrons are pulled from the plate connected to the positive terminal of t...
Energy Stored in a Capacitor When charging a capacitor, the power supply pushes electrons from the positive to the negative plate It therefore does work on the electrons and electrical energy becom...
The Time Constant The time constant of a capacitor discharging through a resistor is a measure of how long it takes for the capacitor to discharge The definition of the time constant is: The time t...
