Recent content by VACUUMIST

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    B Measuring change in g with height (TV program many years ago)

    Hi, look for this paper, specially the von Jolly experiment with a double balance. Rev. Sci. Instrum. 88, 111101 (2017)
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    Magneto-Therapy in Physiotherapy -- Does it work?

    thanks to both of you.
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    Magneto-Therapy in Physiotherapy -- Does it work?

    Thanks I was thinking in some experimental report, pro or con.
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    Magneto-Therapy in Physiotherapy -- Does it work?

    Dear Berkeman Thnks for your answer. No intracraneal applications! Only its use to relieve joint pain or tendinitis.
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    Magneto-Therapy in Physiotherapy -- Does it work?

    I would be glad to know if there is evidence of the efficiency of physiotherapy based on magnetism.
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    Orbital shutter as a beacon for interstellar communication

    Summary:: Hypotetical structure in the style of Dyson ring In the style of Dyson's proposal of an orbital superstructure, I wonder if in the specialized literature wasn't suggested that an evolved civilization could make a kind of orbital shutter, in order to delivery optical signals...
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    Why does an excimer lamp produce a double filament discharge?

    No wires, just the 2 external electrodes. I have the same question... why two parallel discharges?
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    Why does an excimer lamp produce a double filament discharge?

    A HV diode in series with the lamp reduces the irradiated power but keeps the two discharges.
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    Why does an excimer lamp produce a double filament discharge?

    I prepared a new lamp, still at pumping station. Permanent magnet distorts the two discharges. Looking from an end doesn´ t seem that the discharges are as suggested by artis. Each discharge has its own start.
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    Why does an excimer lamp produce a double filament discharge?

    I forgot to mention that the last magnet experiment was done with the electrodes repositioned, placed along the main axis of the lamp. That resulted in two discharges close to each electrode. Tomorrow some pictures.
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    Why does an excimer lamp produce a double filament discharge?

    With an earlier essay, Kr + Br, the permanent magnet distorted the discharge. I suspect that now, being the discharge so close to the lamp wall it is not noticeable any distorsion.
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    Why does an excimer lamp produce a double filament discharge?

    Hi artis Both filaments seems to be paralell. Tapes are just to hold the lamp to the table. No wire inside or outside, just both external electrodes. No alteration with a neodymium magnet. I will try to prepare a video. Thanks.
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    Why does an excimer lamp produce a double filament discharge?

    Hi DaveE It is an electrodeless lamp. Quartz is the envelope and the dielectric.
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    Why does an excimer lamp produce a double filament discharge?

    Hi, thanks for your interest. It is a quartz tube, that was evacuated in a high vacuum system (mechanical pump + diff pump), degassed, filled with krypton and chlorine and sealed off with blow torch. Power supply approx 10 kV, at 50 kHz, pulsed source.
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