72 thoughts on “Shine a laser through the new £5 note”

  1. sigh. this could have been a great video, but alas it is merely a good video. It is only missing one thing – that most important asset of all great videos. Do I even need to say it? though I guess pouring interfering light out of a beaker may be tricky. you get a pass this time.

  2. After seeing the Canada note video I tried shining a laser through one of the new(ish) SCottish £5 notes, nothing interesting unfortunately. 🙁

  3. Hi , I work on the The Sun Newspaper’s video desk. I hope you are well. We really like your video and wondered if we can please use a proportion of your video with a credit and a hyperlink back to your site?

  4. Hey there! Fantastic video – I'm messaging on behalf of the MailOnline, we would absolutely love your permission to run this video on our website in our webplayer.

    We will include a link back to this video or wherever you specify and fully credit you so we can promote your video

    We would love to hear from you, so please get in touch for more details at [email protected]

    All the best

  5. Oh my gosh, Steve! I took the £5 note and poored it out of a beaker, and you won't believe what happened! I'm going to make a video and get the effect named after me!
    Sorry you missed out on this one!

  6. What's that you say about the "wave nature of light"? I've just been watching Richard Feynman tell me unequivocally light is a particle. Has QED been overthrown?

  7. Rumour has it is to also check the serial No. If you come across a number on the new £5 note that starts with 'AA' it's highly collectable and sought after.

  8. Hi Steve, would it be possible to use your video on our website with a credit and link to the channel please? Thanks, Micheal.

  9. Gizmodo told me some "wonky" stuff happens when you shine a laser through the window pattern. That was a lie. Harambe sad.

  10. It's not the grid of dots that's doing it, it's the holographic security feature that's embossed in the plastic right there.

  11. Probably on purpose. Dot spacing is probably particular to the authenticity of the bill. You could for example use it to verify bills going into a vending machine. The machine shines a laser through the printout and measures the spacing at a known distance.

  12. Unfortunately, I don't have a British note.
    But I think you should address the phenomena as diffraction rather than interference, as by searching the word "interference", only Young's double slit/newton's rings results would come up on the top.

  13. The first thing to do with the new note is to pass a laser through it?

    For me the first thing would be to check if it smells like baked beans or something.

  14. what a crock of poop……..;wgen these monies are designed – they are encrypted – just like the american dollar bill which portrays all the bombings – 9/11 – fed reserve bank – pentagon and now the new bill has nucluer annihliation starting off in america…….MANHATTEN……..obama cant wait to mention MANHATTEN!!!!
    OBAMA IS THE ANTI-CHRIST!!!!!!!
    THE POPE IS THE FALSE PROPHET OF REVELATION!!

  15. Made me think of Babinet's principle! It states that the diffraction pattern from an opaque body is identical to that from a hole of the same size and shape except for the overall forward beam intensity [wikipedia]. Maybe a fun topic to play around with?

  16. I didn't manage to recreate, I think my laser is too thick…
    I just got the usual horizontal interference pattern.

  17. Works on the new £10 polymer note too, putting the laser pointer 1 inch from note, note 1 foot from a white background was good for me.

  18. Also works with £10 notes. Having trouble typing this, all sorts of pink dots in my eyes!
    The green laser got reflected a couple of times! OOPS.

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