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#1
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Electron gun
Here is the Tesla's electron gun:
http://en.wikipedia.org/wiki/File:Sp_xmtr.png "In April 1887, Tesla began investigating what would later be called X-rays " We now know that this device operated by emitting electrons from the single electrode through a combination of field electron emission and thermionic emission. Once liberated, electrons are strongly repelled by the high electric field near the electrode during negative voltage peaks from the oscillating HV output of the Tesla Coil, generating X rays as they collide with the glass envelope. " From: http://en.wikipedia.org/?title=Nikola_Tesla So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* |
#2
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Electron gun
On Thu, 12 Apr 2012 18:28:43 +0200, "Szczepan Bialek"
wrote: Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png "In April 1887, Tesla began investigating what would later be called X-rays " We now know that this device operated by emitting electrons from the single electrode through a combination of field electron emission and thermionic emission. Once liberated, electrons are strongly repelled by the high electric field near the electrode during negative voltage peaks from the oscillating HV output of the Tesla Coil, generating X rays as they collide with the glass envelope. " From: http://en.wikipedia.org/?title=Nikola_Tesla So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* Who is "we"? w. |
#3
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Electron gun
Szczepan Bialek wrote:
Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png "In April 1887, Tesla began investigating what would later be called X-rays " We now know that this device operated by emitting electrons from the single electrode through a combination of field electron emission and thermionic emission. Once liberated, electrons are strongly repelled by the high electric field near the electrode during negative voltage peaks from the oscillating HV output of the Tesla Coil, generating X rays as they collide with the glass envelope. " From: http://en.wikipedia.org/?title=Nikola_Tesla So we know that the electrons are liberated from the end of antenna. No, they are not in general. That is total nonsense. But where the electrons come from? They don't come from anywhere because it is not happening. You are confusing the specific operation of a Tesla coil with radio in general. You are a babbling idiot. |
#4
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Electron gun
"Szczepan Bialek" wrote in message ... Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png snip So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* So I suppose we should develop some antennas that have a current maximum at the end of the antenna? |
#5
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Electron gun
I wworked for 6 momths for a company that manufactured thin-film optical
filters. The glass pieces were placed ina vacuum chamber. along with the crucible(s) with the coating material(s). Once the chamber was evacuated an electron beam was used to heat the coating materials, which usually sublimed and were directed magneticaly to the glass. I still have one of the electron guns (filament burned out). It looks like an oversized tube with an open ended glass tube on one side where the beam was directed out. -- "Peace is that brief moment is history when everybody stands around reloading,"-- Rev. Skip Heitzig |
#6
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Electron gun
napisa³ w wiadomo¶ci ... Szczepan Bialek wrote: Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png "In April 1887, Tesla began investigating what would later be called X-rays " We now know that this device operated by emitting electrons from the single electrode through a combination of field electron emission and thermionic emission. Once liberated, electrons are strongly repelled by the high electric field near the electrode during negative voltage peaks from the oscillating HV output of the Tesla Coil, generating X rays as they collide with the glass envelope. " From: http://en.wikipedia.org/?title=Nikola_Tesla So we know that the electrons are liberated from the end of antenna. No, they are not in general. That is total nonsense. But where the electrons come from? They don't come from anywhere because it is not happening. You are confusing the specific operation of a Tesla coil with radio in general. So "we" know from you that todays antennas do not liberate even one electron. Antennas liberate the EM waves and the electrons as a by product. Do you support this? S* |
#7
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Electron gun
"Wayne" napisal w wiadomosci ... "Szczepan Bialek" wrote in message ... Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png snip So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* So I suppose we should develop some antennas that have a current maximum at the end of the antenna? Antennas liberated the EM waves and the electrons. More electrons is liberated more electrons is flowing in the antenna. EM travel in space. Electrons fall down on the earth. For this reason the earth is necessary. Do you agree? S* |
#8
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Electron gun
"Szczepan Bialek" wrote in message ... "Wayne" napisal w wiadomosci ... "Szczepan Bialek" wrote in message ... Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png snip So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* So I suppose we should develop some antennas that have a current maximum at the end of the antenna? # Antennas liberated the EM waves and the electrons. # More electrons is liberated more electrons is flowing in the antenna. # # EM travel in space. Electrons fall down on the earth. # For this reason the earth is necessary. # Do you agree? # S* No. There is a current minimum at the end of an antenna because there is no place for electrons to flow. |
#9
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Electron gun
Uzytkownik "Helmut Wabnig" [email protected] --- -.dotat napisal w wiadomosci ... On Thu, 12 Apr 2012 18:28:43 +0200, "Szczepan Bialek" wrote: Here is the Tesla's electron gun: http://en.wikipedia.org/wiki/File:Sp_xmtr.png "In April 1887, Tesla began investigating what would later be called X-rays " We now know that this device operated by emitting electrons from the single electrode through a combination of field electron emission and thermionic emission. Once liberated, electrons are strongly repelled by the high electric field near the electrode during negative voltage peaks from the oscillating HV output of the Tesla Coil, generating X rays as they collide with the glass envelope. " From: http://en.wikipedia.org/?title=Nikola_Tesla So we know that the electrons are liberated from the end of antenna. But where the electrons come from? From: "the earth"? S* Who is "we"? All who know what the "field electron emission" is. "Introduction.-The main features of t h e phenomenon of the extraction of ele&ons from cold metals b y intense electric fields are well known," From: http://www-project.slac.stanford.edu...ces/fowler.pdf Each metal with the excess of electrons liberate them. A transmitter antena liberates radio waves, heat and electrons. Waves travel in space, heat is dissipated and electrons are taken from the earth. S* |
#10
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Electron gun
Szczepan Bialek wrote:
All who know what the "field electron emission" is. "Introduction.-The main features of t h e phenomenon of the extraction of ele&ons from cold metals b y intense electric fields are well known," From: http://www-project.slac.stanford.edu...ces/fowler.pdf Each metal with the excess of electrons liberate them. A transmitter antena liberates radio waves, heat and electrons. Waves travel in space, heat is dissipated and electrons are taken from the earth. S* This is a bunch of babbling, rambling, meaningless, gibberish. |
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