Clue #1
In which 2 episodes was a weapon used in a specific way to destroy something? I know that's general but hopefully it becomes specific later on.
CLUE #2
The somethings were relevant in the story.
CLUE #3
When the weapon was in use, the somethings couldn't be seen
CLUE#4.
I think there were actually 5 instances/episodes where the weapon was used in a unique way for a special purpose (on different objects or things), however the 2 episodes I'm looking for have not been guessed and actually completely destroyed something.
CLUE #5 (to maybe get a correct guess before the weekend)
The large solid objects were de-materialized/disintegrated, gone from existence and in effect ended the 2 episodes conflicts/issues.
EDIT/ADD TO CLUE#3 Those who used the weapon couldn't see the objects from their standpoint! In other words they were far away.
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COLUMBO trivia
"Turnabout Intruder" Janice Lester/Sandra Smith and
"Amok Time" T'Pring/Alene Martel
both were in Columbo "The Greenhouse Jungle" in 1972