How do noise cancelling headphones work? EXTRAS | James May's Q&A (Ep 10) | Head Squeeze

Extras from James May explaining exactly how noise cancelling headphones work.

James May's Q&A:
With his own unique spin, James May asks and answers the oddball questions we've all wondered about from 'What Exactly Is One Second?' to 'Is Invisibility Possible?'

Links:

[ndmaus]

the pressure (noise) thats left after exhaust scavanging goes to the muffler to be changed within how the muffler(s) is/are designed. Many other things affect it too, like whether its naturally aspirated or not, catalytic converters, the size and compression of the engine, and length of the exhaust.

[debbiethemadbee]

So what are those Clarkson cancelling headphones that May once mentioned about

[StevenLaFrance]

James May how do car exhaust systems work? you know the noise, how some sound high and other low. I'v been wondering this for some time now. Please make a video and thanks love the show and top gear.

[TLBEoGyOH]

@FanticalZappy
Light is made up of electrons(therefore doesn't have mass), a black hole is made of only protons(this makes one teaspoon of a black hole have a mass of 10 000 000kg), this means that the electrons get attracted to the protons in the black hole. Anything that has protons or neutrons in its atoms has mass.
Just something a little relevant, if you stand on the event horizon of a black hole you can see thr back of your head by looking forward.

[DanThomp]

Thanks this was really helpful for a physics exam :)

[SupaNeo]

Why does your shirt/jumper change with each shot in this video?

[FanticalZappy]

Question: so if light gets sucked in to black holes that must mean light has mass, so how can it travle at the speed of light? that must mean a space ship or a sausage roll can. Thats one for Q&A's! as far as i know if it it dosent have mass it can travle at the speed of light and if it does have mass it cant. light has mass and can travle at the speed of light, the amount of mass is erelavant.
THUMS UP IF YOU WANT THIS AWNSERED ON HEAD SQUEEZE, more specificaly james may's Q&A's!

[debbiethemadbee]

It's changing between two different clips.

[danjenkinsdesign]

The question you should be asking is "Why doesn't your shirt change in every cut of every video?"

[dmanpercent]

I think he's doing this deliberately or he keeps deciding that the jumper he's wearing isn't colourful enough or something.

[nikolatotev]

I have a wakman or how ever it's called

[fatmikecj]

Doesn't really explain why he's gone through his entire wardrobe though.

[LauraXKR]

O James, plz explain farting for us and what is dreaming?