Best Demonstration of Resonance -MIT professor demonstrates how glass breaks due to forced resonance

Resonance is a very important phenomenon in the study of vibrations, it occurs when an object is made to vibrate at its natural frequency by a nearby object vibrating at the same frequency.
Beyond its natural frequency, the resonating object experiences very high amplitudes in its vibrating particles making it to break or shutter.

[amandagardner]

a great demonstration.
back in the late 1980's i was given a car owned by 2 older siblings, there was a cassette radio fitted in a box suspended below the dashboard.
the wood box and radio would hit a resonance frequency at about 70kph, and chew the cassette tape. the entire box would swing wildly side to side at just the right forward speed.just below or just above that speed and the tape player would run fine.
i had a lot of fun destroying (and splicing) tapes demonstrating the phenomenon.

[dcmhsotaeh]

Raag Megh Malhar Song of rain
A classical Indian musician in middle ages was noted for his ability to make clods burst into rain
Raag Deepak
Song of light
He was also able to make a lamp light up by singing at appropriate frequency

[miguelcarvalhoaraujo]

Great video ruined by background music and slow motion at the moment of truth.... (the breaking of the glass could have been repeated after in slow motion)

[janbo]

I used to "play glasses" as a kid. The way it works is that you slide your finger around the top edge of the glass, alternating the velocity of the movement and the pressure applied changes the frequency of sound produced. Having different volumes of liquid inside the glass produces a different sound. I managed to break a couple of glasses accidentally by hitting the natural frequency. Not dangerous but it sure was exciting!

[Cardiologist]

Superb ... more fun to watch the glass at the end before it breaks in slow motion ...

[jimmm]

If everything has a destructive resonance frequency, does that include bacterias and infections also? If so, is it possible to eliminate diseases just by matching their destructive resonance frequency?

[gehtdianschasau]

I watched this video in the early days of youtube, but i couldn't leave a comment, because my screen shattered for some reason. Now i finally found out why that happened. True story.

[GangsterAstrology]

People have been known to damage phones and other things during this test. That's probably why they had the added sounds.

[draganandrei]

Why did you use that geh music in background music and slo mo ?

[shiva.chennai]

Great you do with simple speaker for this experiment. Why do you increase volume just increase pitch. Can you do it without increasing volume? What is the final frequency when the glass broke?

[Numberof]

I remember doing something with equations that looked like the ones on the blackboard. Happily brain dumped all the vibrations and control stuff I learned.

[Levi-tmrc]

"some of you many not survive"
Was good

[logannara]

I missed this teacher in my curriculum passed on

[jasonga]

So....are the fog horns trying to smash the ships???

[Capt.JohnGuitar]

When the sound of metallica is played, plates get shattered, mainly due to angry wives.

[hackmedia]

it would have been better if you measured lengths of the glass and converted the wavelength to frequency. Then see if that calculated frequency matches the one that caused it to break.

[ShreyanshGupta-irwc]

legend has it that 53, 401 people watching this video had their screens broken due to not wearing headphones

[esunisen]

How to break a glass ?

Normal way: drop it (or give it to Linus, same result)

Scientific way:

[geisl]

The music in the background couldn't have been more obnoxious and trite but I appreciate the upload!

[forestntt]

Looks like the glass had its own bodyguard to stand watch over it. Didn't work though, it still smashed.