Why Does Grounding the Inner Shell Affect Cylindrical Capacitor Capacitance?

[cscott]

Why is the theoretical capacitance for a cylindrical capacitor (given here http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capcyl.html) equal to the value measured on the outer shell with the inner grounded using a L-C meter?

I'm stuck.

 

[learningphysics]

Why is the theoretical capacitance for a cylindrical capacitor (given here http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capcyl.html) equal to the value measured on the outer shell with the inner grounded using a L-C meter?

I'm stuck.

can you describe what you mean? I'm confused why you say the inner is grounded... what do you mean by L-C meter...