Recent content by krytek

So if I understand correctly, it's all about the output function: A rheostat in series will have an inverse (1/x) function. A potentiometer will have either a linear or logarithmic output function depending on taper. The reason the manufacturer chose a pot over a variable resistor is because...

Ok I understand that a rheostat is a variable resistor and that a potentiometer is a variable voltage divider. Now what I don't understand (from an engineering prospective) is why would you use a potentiometer instead of a variable resistor for stuff like a volume control knob or a throttle...

Hello everyone, Can you guys please explain why a potentiometer needs a ground (-) wire? or what does it do differently and what uses there are for it as opposed to a rheostat. Recently been playing around with automotive sensors like the TPS (Throttle Position Sensor) on a car and just...

Again, thank you. You're a rock star :)

Thank you for the quick reply :) Just to make sure I understand what you said. it doesn't matter if it goes straight from n3 to n1 OR goes from n3 to n2 to n1, either way there will only be a single photon emitted? I was thinking the electron could emit 2 photons during the longer transition.

Homework Statement I'm trying to figure out what paths the electrons take when transitioning between stationary orbits. For example if there are 4 orbits: n1, n2, n3, n4; How do I know if the electron goes from n4 ---> n1 or n4--->n3 ---->n2 -----> n1 ? I was asked to calculate the...

Sorry to wake up the dead. Stumbled upon this and it looked interesting. When an electron is hit by a photon which has an energy below the work function, the electron is excited for a short period of time before returning to the initial state. So if the intensity of light is high it is...