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2. Can anti-noise silence a highway? | Science Questions

   www.thenakedscientists.com/articles/questions/can-anti-noise-silence-highway

   To get active noise control to silence the traffic you would need to produce a sound that is the inverse of the highway noise. When these two add together, the rumble of traffic is removed. Imagine the traffic noise is like a water wave at the seaside, the cancelling sound needs to have a trough where the traffic noise has a peak so that when ...

3. What do tickles tell us about the brain? | Interviews

   www.thenakedscientists.com/articles/interviews/what-do-tickles-tell-us-about-brain

   And so, there were hypotheses from '50s which suggested that perhaps tickling had to do with the fact that brain make predictions of what you were going to feel based on your own actions and remove that off. Just in the way those noise cancelling headphones work. On airplanes, they cancel off the external sounds.

4. Dental-drill cancelling headphones | Science News - The Naked...

   www.thenakedscientists.com/articles/science-news/dental-drill-cancelling...

   The noise cancelling effect works by listening selectively to the incoming sound of the drill and then producing a soundwave in the headphones which is the mirror image of the drill noise, suppressing the sound. Brian Millar is now looking for external investment to take the invention to market. "The beauty of this gadget is that it would be ...

5. Why do speakers make an odd noise when near a ringing phone?

   www.thenakedscientists.com/articles/questions/why-do-speakers-make-odd-noise...

   Why do all speakers make the same odd noise when they are near a ringing phone & intercept the signal? Answer Dave - The phone is sending out a signal to all the nearby base stations, essentially telling them where it is, and I think possibly also to allow the base station to characterise what direction it should send the the signal in, and all ...

6. P&O Pioneer: the ship of the future - The Naked Scientists

   www.thenakedscientists.com/articles/interviews/po-pioneer-ship-future

   We've come down the decks to the engine level, starting off the tour in the diesel generator room. There's not much to say, which is probably a good thing given the noise, but this is the past. Let's go see the future. Dmitri - My name is Dmitri. I am chief engineer on the P&O Pioneer. We are in a battery room now that's one of 4 battery rooms.

7. A simple plastic scanner | Interviews | Naked Scientists

   www.thenakedscientists.com/articles/interviews/simple-plastic-scanner

   In the developed world, we have big plants that can sort through all our rubbish, but in the developing world, they need a quick, straightforward way to tell one plastic from another. And tech startup Matoha Ultrascience has built a portable machine that makes this sorting process quick and simple. Adam Murphy heard how it works from co ...