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The question is a kind of game. I have 50 pothographies about Optics (phenomena, experiments, people,...), but don't worry I only need help for 3 of them. I have found the solution for 46 and there is 1 of which I have some clue.

 

Can anybody help me with the 3 photos? Remenber, all of them are about optics (phenomena, experiments, instruments...). A lot of thanks

 

The thrid one is maybe a ion trap. A lot of thanks again.

 

Edit: Sorry I can't post links before I reach the 10 Post

 

Thanks anyway

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