Add new comment

Permalink In reply to by Anonymous (not verified)

It is true that in the traditional double-slit experiment the detectors were placed at the slits in order to observe the particle like behaviour. The writer is referring to the set up for Wheeler's delayed choice experiment, when the detectors are actually placed behind the screen and the decision of whether you would raise the screen (and hence detect which slit the photon passed through) is made after the photons have passed through the slits. Do you think we should make it clearer that this is different from the traditional set up? Let us know and we'll have another look at the article.

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

  • What do chocolate and mayonnaise have in common? It's maths! Find out how in this podcast featuring engineer Valerie Pinfield.

  • Is it possible to write unique music with the limited quantity of notes and chords available? We ask musician Oli Freke!

  • How can maths help to understand the Southern Ocean, a vital component of the Earth's climate system?

  • Was the mathematical modelling projecting the course of the pandemic too pessimistic, or were the projections justified? Matt Keeling tells our colleagues from SBIDER about the COVID models that fed into public policy.

  • PhD student Daniel Kreuter tells us about his work on the BloodCounts! project, which uses maths to make optimal use of the billions of blood tests performed every year around the globe.