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4hv.org :: Forums :: High Voltage
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Beetle in a Geißler tube

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Physikfan
Mon Nov 06 2017, 07:01PM Print
Physikfan Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
The three pictures show a beetle in a Geißler tube:
(DC source, 9 kV, cathode top, anode bottom)


P1190850400x751
Exposure normal, with room lighting, fluorescence on the glass wall

P1190851400x815
Exposure 2 f-stops underexposed, room dark, fluorescence on the glass wall

P1190857400x344
Exposure 2 f-stops underexposed, room dark
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Physikfan
Fri Nov 10 2017, 07:02AM
Physikfan Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
Beetle in daylight without discharge:

P1190864400x344
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bob800
Sat Nov 11 2017, 05:40AM
bob800 Registered Member #18429 Joined: Sat May 18 2013, 02:05AM
Location:
Posts: 19
Dang that last picture in your first post is incredible. Thanks for sharing, now I want to try this lol
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Physikfan
Sun Nov 12 2017, 03:28PM
Physikfan Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304
Bottom of the beetle in daylight without discharge:

P1190869400x290
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