• Question: What is the effect called when two mirrors are facing each other?

    Asked by anon-14648 to Amy, Drew, Julia, Kimberley, Sara on 21 Jun 2011.
    • Photo: Drew Rae

      Drew Rae answered on 20 Jun 2011:


      Hi. If you mean where you see mirrors inside mirrors inside mirrors – I don’t know, and I haven’t been able to find out. There is a practical effect called Fabry-Perot Interference from parallel mirrors, but I don’t think that’s the answer you’re looking for.

    • Photo: Julia Griffen

      Julia Griffen answered on 20 Jun 2011:


      Not sure…

    • Photo: Amy MacQueen

      Amy MacQueen answered on 20 Jun 2011:


      Okay so I looked this up and apparently …

      “Two mirrors facing each other in vacuum are mutually attracted to each other by the simple presence of quantum vacuum fluctuations. This surprising phenomenon was first predicted in 1948 by the Dutch theoretical physicist Hendrik Casimir, who was working at the Phillips Research Laboratories in Eindhoven on colloidal solutions. The phenomenon is now named after him “the Casimir effect”, while the force arising between the mirrors is called the Casimir force.”

      Is this the answer you were looking for – was it a test???? 🙂

      cunning!!!

    • Photo: Sara Imari Walker

      Sara Imari Walker answered on 21 Jun 2011:


      Hi aharrison! I love the Casmir force!! It is so cool! So glad Amy brought that into the conversation 😉

      Hmmm, I am assuming though that you mean the effect Drew has mentioned. I couldn’t really find anything either – except to call it the “infinite mirror effect”, which doesn’t sound like a very clever name. But, apparently that might just be all were going to get! Maybe you should come up with a better one!

Comments