Harnessing Electricity from an Electromagnetic field?

AI Thread Summary
Harnessing electricity from an electromagnetic field raises questions about the feasibility of energy harvesting versus the concept of perpetual motion, which is not permitted for discussion. The conversation touches on the practicality of using devices like electric motors or transformers for this purpose. RF energy harvesting is mentioned as a legitimate area of exploration, with a mix of credible and dubious information available online. The main challenge lies in converting harvested RF energy into a usable form. Overall, while energy harvesting is possible, its effective application remains complex.
TardisRobber
Messages
4
Reaction score
0
Does anyone have any thoughts on what would happen if you tried harnessing Electricity from an Electromagnetic field?
 
Engineering news on Phys.org
Yao you mean an electric motor, or a transformer?

If you mean free energy from nowhere, that is perpetual motion and discussion of that is not allowed on physics forum.
 
Ok
Thanks
 

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
View full post »

Thread 'Question about the voltage between two charged capacitors'

suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...
View full post »
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Similar threads

Electromagnetic field under different perspective
Replies
1
Views
1K
Wireless Microcurrent Stimulation
Replies
3
Views
1K
Where is the strongest intensity of an electromagnetic field produced by a solenoid?
Replies
4
Views
1K
EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)
Replies
3
Views
69
Electromagnetic field vs electromagnetic wave "radiation"
Replies
7
Views
2K
Need an electromagnet to play Chess
Replies
37
Views
3K
Can a superconductor "repel" an electromagnet due to the Meissner effect?
Replies
2
Views
2K
I Electric field in two dimensions in an electromagnetic wave
Replies
2
Views
989
Ground loop on electronic audio systems
Replies
28
Views
669
Concentric coils for power generation
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top