What have you checked to conclude "the tube seems to work just fine"?
Perhaps too obvious but have you checked with a neon tester to see if
there's still neon inside?
On Saturday, May 6, 2023 at 6:06:50 PM UTC+2 Dekatron42 wrote:
> I've been able to buy a Neon filled Franck-Hertz tube together with its
> control unit. Everything looks fine, the output voltages from the control
> unit are correct and the tube seems to work just fine, however I can't get
> the experiment to work properly.
>
> Is there anyone here on the forum that can help me out?
>
> I have checked all voltages and used this guide:
> http://www.bastgen.de/schule/physik/13/Material/Franck-Hertz-Neon.pdf
>
> The control unit can be seen here:
> https://www.uranmaschine.de/87051.Neva_6751_Franck-Hertz-Roehre_mit_Quecksilber/87051.Neva_6756_Franck-Hertz-Betriebsgeraet_hires.jpg
>
> What I am trying to do is specifically the part where you are supposed to
> get one or more clusters of neon atoms being excited like in this photo:
> https://www.leybold-shop.com/media/phk/images/versuche/P6243_Schirmbild.jpg
>
> [image:
> https://www.leybold-shop.com/media/phk/images/versuche/P6243_Schirmbild.jpg]
>
>
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