what experiments, if any, have been invalidated by the extinction phenomena.
I do not think your question as stated is very understandable.
The first thing I don't understand is what you mean by "invalidate an experiment" ?
An experiment which has been correctly done is merely an observation of Nature and can not be invalidated, unless it has been done wrongly.
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You can invalidate an interpretation, but not an experiment.
you mean optical extinction ?
Separate names with a comma.