flourescent lamp operation
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Varczar
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- Birmingham, AL
Well sort of...The fluorescent bulbs actually light up due to the amount of EMF that they are near. Mostly you can test this reality by holding up a 4 ft tube under a 500kV Transmission line or (if you have access) in a 500kV Transmission switching station. The amount of EMF in these areas is usually more than enough to light up a bulb.
There is a long detailed explanation of why this works including the theory about how fluorescents operate and why EMF is bad for you; but that would take a long time to go into here.
Here are a couple of sites to visit to that shows this phenomenon in action:
http://gizmodo.com/361390/1301-florescent-bulbs-lit-solely-by-magnetic-fields
http://www.youtube.com/watch?v=Qt-gIyA-G0w
The POCO can give you a tremendous amount of information on EMF if you want it. They had to gear up for all the questions years ago when the public started panicing about transmission lines in peoples backyards.
Hope this helped a little.:grin:
There is a long detailed explanation of why this works including the theory about how fluorescents operate and why EMF is bad for you; but that would take a long time to go into here.
Here are a couple of sites to visit to that shows this phenomenon in action:
http://gizmodo.com/361390/1301-florescent-bulbs-lit-solely-by-magnetic-fields
http://www.youtube.com/watch?v=Qt-gIyA-G0w
The POCO can give you a tremendous amount of information on EMF if you want it. They had to gear up for all the questions years ago when the public started panicing about transmission lines in peoples backyards.
Hope this helped a little.:grin:
but if so why there is an effect related to antennas? i think this link will help
http://www.iop.org/EJ/abstract/0022-3727/41/14/144026
so we should give a decision. because this lamp will glow with even a tiny wattage but high frequency signal, so both frequency and emf effects this phenomenea?
http://www.iop.org/EJ/abstract/0022-3727/41/14/144026
so we should give a decision. because this lamp will glow with even a tiny wattage but high frequency signal, so both frequency and emf effects this phenomenea?
excitation:
excitation:
The electron is excited to a higher than normal energy level by external EM fields, high frequency, high voltage, or high current. The electron does not need to be ionized for this to happen. Non ionizing EM radiation raises the bound electron's energy level.
When the electron falls back to its normal, balanced energy level it gives off a balancing photon (conservation of energy). This photon is typically UV and the tubes phosphor coating or HID lamp's gas envelope converts UV to visible light.
Parameters are adjusted to accomplish this more efficiently, higher frequency, higher voltage, or excitation by a nearby plasma arc. Arcs contain a wide high frequency range of EM. The excited atom or molecule is chosen to give off useful (illuminating) photons.
This phenomena is also the basis of mass spectrometers. Each element or molecule, when it is excited to emit photons, the photons have characteristic identifying frequency or energy, a characteristic distribution of photon emission at particular frequencies.
excitation:
The electron is excited to a higher than normal energy level by external EM fields, high frequency, high voltage, or high current. The electron does not need to be ionized for this to happen. Non ionizing EM radiation raises the bound electron's energy level.
When the electron falls back to its normal, balanced energy level it gives off a balancing photon (conservation of energy). This photon is typically UV and the tubes phosphor coating or HID lamp's gas envelope converts UV to visible light.
Parameters are adjusted to accomplish this more efficiently, higher frequency, higher voltage, or excitation by a nearby plasma arc. Arcs contain a wide high frequency range of EM. The excited atom or molecule is chosen to give off useful (illuminating) photons.
This phenomena is also the basis of mass spectrometers. Each element or molecule, when it is excited to emit photons, the photons have characteristic identifying frequency or energy, a characteristic distribution of photon emission at particular frequencies.
I think so. I've seen them glow when placed near a van de graf generator, which I think generates a static DC voltage.
Steve
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
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- Electrical Contractor
You can if you get the voltage high enough. We use AC because it makes raising voltage easy using transformers.
In fact, DC fluorescent fixtures use electronic DC-to-AC circuitry to supply a transformer to operate the tube.
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