See How Innovative Sound Mirrors Helped Detect Enemy Aircraft

[@alitlweird]

Back in the day, William Tucker would sit there with his laptop and microphone for hours upon hours.

[@Dee-tx7tg]

Its so sad what he did to his daughter ;-;

[@mathamour]

Weekend Projects - Squirrel-Baffle Spy Microphone - KZbin kzbin.info/www/bejne/poDbnpeMjMegeqc&ab_channel=Make%3A See How Innovative Sound Mirrors Helped Detect Enemy Aircraft kzbin.info/www/bejne/r3OYdGSFgtGim6s

[@bobblue_west]

@@Dee-tx7tg which is what?

[@AtomicDetailing]

*Plane flys over the mirror* "I've detected a plane"

[@phanCAbe]

Cool video and cool invention...that demonstration seemed a touch worthless though...

[@scootergrant8683]

Watch Tom Scott's video as he makes a demonstration slightly better: kzbin.info/www/bejne/ZmWpZqKpjbBnrNk Furthermore, in the days it was used, the mirror would have been much better to hear from given the focal point would have been properly calculated.

[@colinallcars5239]

"I think I hear something a little louder".... plane flys directly over head. 🙄

[@ve6975]

Someone made a bmx video on these things lmao

[@1Moonfeather]

I thought for sure the inventor was called "William Sansome Fucker" when the name popped on the screen

[@thelaotianaviator]

it does a little

[@phatmanxxxl]

Moon Sohn I heard Samsung

[@fieryhusky3593]

Cool...a great invention

[@roberthall9855]

A nice little bit of video, but it made me wince in terms of its factual content. None of these mirrors are paraboloids as stated in the commentary. They are all spheroidal. Paraboloid detectors are used where the mirror is itself movable. Spheroidal mirrors like these are used where the mirror is fixed, but the receiver is mobile (or, like the 200ft wall mirror shown, with multiple receivers/microphones). The demonstration would have been much more successful had they realised that - as she was almost certainly nowhere near the "focal point" she claimed. The rationale for this comes down to basic physics. It is nicely set out in a contemporary publication to which Professor WS Tucker himself contributed: "The Theory of Anti-Aircraft Sound Location and Detection" published in 1932. The revised and updated version (published May 2017) of "Echoes from the Sky" by the late Richard N Scarth is highly recommended for the historical background to these structures.

[@parillo12]

the only reason I previously knew about these is someone made a sick bmx video in them xD!

[@Josh-le6lu]

Do not forget that the hills once had ears.

[@stabletony]

Humans will find these in the future and think ancient humans made stone satellites must have known aliens...

[@thorn9382]

Wonder if you could break things with highly focused sound like you could with reflected light

[@mathamour]

Yes, you can break a glass with sound.

[@MoisesCaster]

Awesome

[@ranganathswamy4354]

what a invention man she uses Mike did they uses mikes and hear phone in sudden situations in war time

[@shanetagliavia152]

Wheres godzilla, he cant be ok after reading this

[@mutepoet4485]

these phenomenon we all are studied at class 10 th spherical mirror .this is one of the best historical invention

[@notrevieadeuxtonyetgregory7679]

On y es allez 👍👌

[@arjunk4146]

What if the airplane is coming from the opposite side towards the place ? The sound waves would hit the opposite side of the wall . the sound waves would emanate from the amplification point .

[@mathamour]

Britain is an island, and enemy fighters come to British land from Europe

[@camaragus]

esa parabolica, no se la lleva el chatarrero

[@firstnamelastname5407]

2

[@gamingwitharjun4869]

Am i only the one who is from notes std 7th Hb kapadia

[@lingling813]

wubudubadubdub

[@SupaEMT134]

Okay, I _definitely_ need to date her. I'm not kidding

[@borisrus3723]

3rd