@@pedrorltrooper3964 sirens with the "chopper" disk are considered mechanical sirens. Federal Signal 2001-130 and ASC T-128 come to mind. Sirens with literal loud speakers are considered electrical sirens. Federal Signal Modulator and Whelen Vortex come to mind. Both have their advantages and disadvantages. Hope this helped somewhat 👍
My 8th grade teacher had us watch episodes of Mr Wizard in class, and this was one of the episodes I saw. This is how I learned how simple these things are.
@Calvin5040 We have had violent cartoons for 80+ years. The problem is the Internet and all of this inter connectivity we have today where one click and your child just saw a porno or ISIS/Al Qaeda sawing off someones head or hands. The Internet is really an evil thing and I knew where it was headed even back in 1996 when people started to get it on dial up. By the time broadband came the writing was on the wall but then to put the icing on the shit cake parents are giving mobile devices to 7+ year olds. You do realize that the children of the founders of Tech are not allowed to have the Mobile Internet until they are 17, right? There is a reason for that.
@StormChaser You know how you can tell you're getting old? It's when you think your generation had all the answers and could do no wrong unlike the "wannabe gangsters" of today. Enjoy your life, old man.
I don’t know that I would’ve wanted to do that. Even for getting the possibility of losing a finger or an eye or worse, I can only imagine how loud that must’ve been.
Emergency warning sirens Control by using two things a chopper and a stator The chopper will make the wind chop up into little pieces in the stator controls the sound and if you add horns to it it will Echo more
Alright ,tonight idea we will put siren on a child face and let her know how it sounds "clearly" and how much air flow from it .and ask her to close her hand to "decorated" an industrial electric saw disk .
LOOK!! RISK MANAGEMENT BEING USED!! instead of all the care being taken by someone else, she is taking care for herself. WOW! Kids aren't idiots, who knew!
Hahahaha what the fuck?! SOOO dangerous!!! Only in the 1980’s eh?! No way in hell a TV show or anybody who had a kid would tell a kid to put their fingers near a spinning chop saw spinning at 3000 RPM 😅😅😅 omg hilarious how nuts this is!
I take issue with his comparison of nice and "yucky" sounds. The explanation of a siren chopping air into little pieces was completely correct and a perfect explanation in itself of how a siren works. However, the "yucky" part is both irrelevant and incorrect. First of all, a siren's rotor openings are evenly spaced, not irregularly spaced. Secondly, the siren speeding up does not make the sound yuckier or distort the sound waves in any way. It's just the same sound sweeping upwards in frequency. A siren may sound "yucky" due to the way its housing funnels the air, the presence of dual rotors, or other physical factors. However, most single-rotor sirens (especially Sentry's models in my opinion) sound generally pretty clear and un-"yucky."
The explanation does make sense. The holes the air is being pushed through are constantly changing size due to the rotation of the fan. Compared to the nice sounds where the holes are of constant size
@@dforbesjr99 No, the changing size of the holes doesn't have any relevance to the "yuckiness" he was previously referring to, and he was wrong to imply that it did. The same hole size change was occurring with the "nice" sounding holes. The "yuckiness" he was referring to is an uneven placement of the holes, causing the pulses of air to be irregularly timed. The demonstration with the saw makes some sense as the sound frequency is actually being modulated irregularly because the holes are spaced unevenly around the disk, but when he demonstrates with the real siren, it disproves his point, because the holes in it are evenly spaced. The real siren he uses is actually the same thing as the "nice" sound on the saw. The only thing happening with the siren is the pitch increasing, there isn't any of the "yucky" as he described it earlier. "The faster it spins the yuckier it gets" doesn't make sense because, again, the only thing changing is the pitch, while the frequency, though increasing, is still even and regular.
That's exactly how an air raid siren, and all electromechanical sirens work, well, minus the whole part where he explains that the sound is because the hole gets bigger and smaller.
"Here, let me pull your hand toward this serrated disk of death." - I love the 80s
Nice spinning circular saw blade for a kid to put their hand next to
I watched this show every morning before school. Truly natural selection at its best 😁
Same
😂 Almost as fun as Lawn Darts.
I just spent 10 minutes searching for how these things worked, this is not what I expected to find but it finally answered my question.
Siren to the face, hand an inch from circular saw, looking inside an open siren spinning without eye protection. Oml
sean connor cool
The 80s summed up
And no ear protection!
Mr. Wizard! Gotta love the 80s.
Easy, Karen
that's why the 80s and below were awesome, dangerous shit could be gotten away with lol
Except, when they didn't.
for years I've wondered how these things work and never got around to looking into it. glad I did, this is neat stuff
How was that dangerous unless you were an idiot who touched it?
This is a great informative clip, im an adult who had no clue. I thought it was some sort of speaker or something
A few of them do if i am not wrong, but mostly not
@@pedrorltrooper3964 sirens with the "chopper" disk are considered mechanical sirens. Federal Signal 2001-130 and ASC T-128 come to mind. Sirens with literal loud speakers are considered electrical sirens. Federal Signal Modulator and Whelen Vortex come to mind. Both have their advantages and disadvantages. Hope this helped somewhat 👍
@Slim Jordan holy... now that is a lot of information! Thanks tho
@@onefastslimjim*Electronic
There are also speaker sirens, but this is about the more mechanical type of siren.
My 8th grade teacher had us watch episodes of Mr Wizard in class, and this was one of the episodes I saw. This is how I learned how simple these things are.
I love the world before health and safety was a thing!
I think he is referring to the fact that the girl was allowed to put her hand near a sharp cogwheel
@StormChaser Yeah because kids didn't have violent cartoons back then.
@Calvin5040 We have had violent cartoons for 80+ years. The problem is the Internet and all of this inter connectivity we have today where one click and your child just saw a porno or ISIS/Al Qaeda sawing off someones head or hands. The Internet is really an evil thing and I knew where it was headed even back in 1996 when people started to get it on dial up. By the time broadband came the writing was on the wall but then to put the icing on the shit cake parents are giving mobile devices to 7+ year olds. You do realize that the children of the founders of Tech are not allowed to have the Mobile Internet until they are 17, right? There is a reason for that.
I truly agree with you!!
@StormChaser You know how you can tell you're getting old? It's when you think your generation had all the answers and could do no wrong unlike the "wannabe gangsters" of today.
Enjoy your life, old man.
The last ten seconds are pure gold when taken out of context.
"The faster you go, the more yuckier it gets" lol
It breaks the air into little chunks, and your fingers into little chunks.
"Yucky sound". Bruh, I don't know what you're hearing but I hear sweet fire truck music.
I don’t know that I would’ve wanted to do that. Even for getting the possibility of losing a finger or an eye or worse, I can only imagine how loud that must’ve been.
3:02 "Don't back away, it won't bite you" 🤣👍🏻
Jonny DIY but the priest will
The young girl didn't like the noise due to the horrid sound the siren was making
Siren Head: let's see about "it won't bite you" 😈
Cool, but was it necessary to use SHARP DISC? )
kids are not retarded.
Kids are retarded
@@scottrogers2971 kids are what you made them to be. If they dont have any specified mental issuee they only relect their mentor's intelligence.
@@wjjanshsbaan8599 *i am
Yeah, the risk or getting your fingers chopped off is the essence of the program
I miss this show
no thought of losing fingers!
DylanEliot Williams fuck you
you have 10 fingers, you dont need em all.
That's Drew Barrymore
Safety it's too mainstream.
"You wanna take one apart?" "No." lol 😂
he says "have you ever taken one apart ?"
When I initially clicked play it started the video off at 2:30 in.
They didn't have to put a legal safety disclaimer when I watched this as a child in the 80's. I turned out ok. 😆
Sure you did, Stumpy.
That girl was very smart for her age, or she was given a script lol
girls cant be that smart has to be a script lol
@@shareten1247 r/wooosh
@@halpmeamcringe1538r/woosh
Finally! A worthy opponent! Our battle will be legendary!
@@halpmeamcringe1538 xDDDD
that's all i needed to know! i miss mr. wizard. 💕
1:00 Don't mind the saw blade....
Miss this show!
The 5th holes make it sound like a thunderbolt
Fuck hearing protection!
*WHAT?*
Emergency warning sirens Control by using two things a chopper and a stator The chopper will make the wind chop up into little pieces in the stator controls the sound and if you add horns to it it will Echo more
Like, why is it a saw blade? Why not at least grind the teeth off? He wasn't even holding her hand steady for her at the end. Easter candy time.
Nowadays, sirens use a pre-recorded noise on a sound card that plays on a loudspeaker.
That type of siren was such a bad idea 😅
Am I the only one who found the ending very funny?
Drew Barrymore loses fingers to my favorite Scientist.
Eat your heart out Bill Nye
😂😂😂
Mr Wizard was The Best!!!!
mmm yes small child, get CLOSE to the sawblade!
Alright ,tonight idea we will put siren on a child face and let her know how it sounds "clearly" and how much air flow from it .and ask her to close her hand to "decorated" an industrial electric saw disk .
Great explanation!
2:39 Little blades. He called them little fans.
Awesome.
Awesome
why the fuck did they use a circular saw LMAO
It’s not a bad sound
I think you may be a little bias ;)
Mom: How did you sleep last night
Me knowing I didn’t because I wanted to know how sirens worked at 3 in the morning
I just came here to see how siren head works lol
No one cares
I agree with that dude f off
He/it uses 2 CORE PA loudspeakers. Of course the sirens are aged due to exposure to the elements
Now I know how that works....
For me it's when I'm speeding on the freeway. Siren works.
This wouldn't make sense without the serrated edge on the wheel
LOOK!! RISK MANAGEMENT BEING USED!! instead of all the care being taken by someone else, she is taking care for herself. WOW! Kids aren't idiots, who knew!
Did he invent lawn darts next?
What sound she think is yucky is the best sound for me
That's a good way to make someone deaf.
Nice👍
OMG safety first lol!
At least it was safe
So much anxiety
THAT IS A SAW!
I wanted to know what would happen if she put her hand in there at the end...
She would have lost her fingertip.
rdfox76 i cant even remember posting this. but it sounds like me....hahah
Why this kid sounds smarter than kids nowadays? Perhaps it's a good decision that i never touch TikTok
2:30
LMAO girls ears start bleeding
is this tim?
1:04 ahahaah u wot m8
The sound is chopped into pieces just like your hand if it gets too close to the blade sweetie 😝
So it is pretty much a really loud whistle.
It is really a fan that just chops air. The resulting chopped air creates sound waves. The waves are what you hear
Safety first be careful now
Hahahaha what the fuck?! SOOO dangerous!!! Only in the 1980’s eh?! No way in hell a TV show or anybody who had a kid would tell a kid to put their fingers near a spinning chop saw spinning at 3000 RPM 😅😅😅 omg hilarious how nuts this is!
I heard a siren today ;-;
Ok I'm going to try to get a chance I would like to know if you have any messages from you know that u to be home
Theres a fkn saliva
Safety and health killed the freedom of doing amazing things although that don't stop anyone from doing what they love right!
Is that a fucking saw?!?
इतनी age mai mujhe ghanta smjh nhi aati thi science , upar se teacher भी chomu the
Lol why use a saw blade?
More noise, waw!
who needs speaker
Am I the only person that See's saliva dripping from the girls tube
Yes it was dangerous but can kids these days give such intelligent answers 🤷
sirens are not yuky some poeple like them its thire hoby
Smort
Todays the woke liberal parents wont even let the kids near such loud siren
took 3min before a saw who mr wizard was
wuttttt.......the little girls fingers were so close litirely sooo dump thing to put the girl into these.....i mean come on a cicrular saw??
Yucky sound. Lol
Joe Biden teaching science!
Mr. Wizard was a bada$$ Joe Biden not so much
I take issue with his comparison of nice and "yucky" sounds. The explanation of a siren chopping air into little pieces was completely correct and a perfect explanation in itself of how a siren works. However, the "yucky" part is both irrelevant and incorrect. First of all, a siren's rotor openings are evenly spaced, not irregularly spaced. Secondly, the siren speeding up does not make the sound yuckier or distort the sound waves in any way. It's just the same sound sweeping upwards in frequency.
A siren may sound "yucky" due to the way its housing funnels the air, the presence of dual rotors, or other physical factors. However, most single-rotor sirens (especially Sentry's models in my opinion) sound generally pretty clear and un-"yucky."
The explanation does make sense. The holes the air is being pushed through are constantly changing size due to the rotation of the fan. Compared to the nice sounds where the holes are of constant size
@@dforbesjr99 No, the changing size of the holes doesn't have any relevance to the "yuckiness" he was previously referring to, and he was wrong to imply that it did. The same hole size change was occurring with the "nice" sounding holes.
The "yuckiness" he was referring to is an uneven placement of the holes, causing the pulses of air to be irregularly timed. The demonstration with the saw makes some sense as the sound frequency is actually being modulated irregularly because the holes are spaced unevenly around the disk, but when he demonstrates with the real siren, it disproves his point, because the holes in it are evenly spaced. The real siren he uses is actually the same thing as the "nice" sound on the saw. The only thing happening with the siren is the pitch increasing, there isn't any of the "yucky" as he described it earlier. "The faster it spins the yuckier it gets" doesn't make sense because, again, the only thing changing is the pitch, while the frequency, though increasing, is still even and regular.
Isn't she so beautiful x
that is not how an air raid siren works
Yes it is.
It is
Rod Karch it is you dummy
That's exactly how an air raid siren, and all electromechanical sirens work, well, minus the whole part where he explains that the sound is because the hole gets bigger and smaller.
They aren’t speakers
Thats actually not how that works
3:10