Tag Info

New answers tagged

0

I think the TiOPc on printer drums may be TiOPc nanoparticles embedded in some kind of organic binder, rather than solid TiOPc. See this: http://patents.justia.com/patent/20140054510 for example for the challenges of dissolving TiOPc in anything. The binder on the other hand should be easy to dissolve; try acetone first, if that doesn't work, perhaps ...


0

The photo-electric effect is a surface level phenomenon. At a micro level there is a 1:1 interaction of an electron and a photon. When you increase the intensity, you are increasing the number of impinging photons, which doesn't translate to more kinetic energy of the electron but it does translate to a higher number of 1:1 interactions. So more electrons ...


-2

Is the photon's wave function the same as an electromagnetic wave (light)? No, wavefunction is not the same as an electromagnetic wave. However take a look at Jeff Lundeen's material including his semi-technical explanation of weak measurement: "We hope that the scientific community can now improve upon the Copenhagen Interpretation, and redefine the ...


0

The main issue with running a fluorescent light bulb backwards is that there are some irreversibility in the way that it convert electricity to light. The Mercury vapour in the tube emits UV rays. Theses rays are absorbed by the phosphor coating on the tube which emits white light. However, if we illuminate the phosphor with white light (reversing the ...


2

Is the working principle of light bulb reversible? No. Electric potential energy is converted into thermal energy in the light bulb filament. At a certain temperature range the filament will light up; that is, it will radiate with a wavelenght in the range of visible light. That this process is non-reversible might be clear if you consider some more ...


0

The voltage across the photodiode is the same as the voltage of the power supply (they are in parallel). Put voltage of the power supply into the Shockley Diode equation to calculate the current through the ammeter if the current generated by exposure to light is $I_\mathrm{L}$, $$ I=I_\mathrm{S} \left( e^{V_\mathrm{D}/(n V_\mathrm{T})}-1 \right) - ...


0

Einstein realized the answer to this question way back in 1905. In fact it was one of the most important theories in the dawn of the Quantum Mechanics revolution in physics. Late 19th century physicists thought light was described completely as a wave which when continuously excited an electron for an amount of time would eventually eject it. However, this ...


1

The metal plate is typically attached to a circuit which collects the ejected electrons making the system net neutral overall just with a current flowing. Also they are usually more easily ejected because the plate is at a potential attached to a battery. However, if the plate were suspended by an insulator in a vacuum and it continuously lost electrons ...



Top 50 recent answers are included