Unfortunatly I don't have a pressure gauge, I guess that's one of the things I'll have to buy. I also need some Deuterium and two spherical electrodes.
Thanks for your reply.
Of course I have an adult supervisor helping me.The bell jar is quite a new one. I have also got access to a good pump (according to the owners manual it goes down to 4*10^-4mbar).
Hi,
I like to build a Farnsworth-Hirsch-Fusor for a school project. I want to use an ordinary bell jar but I am not quite sure if it will work at the pressure I need (0.1-10pa). Does anybody know how much pressure a bell jar can take?