Has the Casimir effect been directly observed?

[KarminValso1724]

It seems to me that you would have to place two plates so close together and perfectly parallel for the effect to be visible. Correct me if I am wrong.

 

[Vanadium 50]

You're wrong. Worse, five seconds worth of work to take a look at Wikipedia would have given you your answer.

 

[Nugatory]

And, in the spirit of offering a carrot to go with V50's stick... The wikipedia article includes some discussion of how the practical difficulties you are thinking of were overcome. It's really quite interesting stuff, worth your time to read and then follow the links to some of the references.