Coffee Mechanics - Sixty Symbols
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- čas přidán 15. 06. 2024
- Professor Philip Moriarty talks about his favourite drink and his favourite scientific image... The similarities between coffee and quantum mechanics.
More on the quantum corral by Crommie, Lutz and Eigler: www.sciencemag.org/content/262...
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Sixty Symbols videos by Brady Haran - Věda a technologie
I've seen this before, it means theres a T Rex nearby.
Andrew Graham I'm glad I checked the comments... you got there before me.:)
Andrew Graham Objects in mirror may be closer than they appear.
It means there's a T-r.... Dammit!
Andrew Graham must go faster...
Andrew Graham it means... something's gonna ruin my morning coffee soon ;)
Not only is he fun to watch... you can tell Dr. Moriarty really enjoys teaching.
Animuldok Studying physics at uni of nottingham, can confirm he is hands down the best lecturer, his enthusiasm is unparalleled
bejiman123 I would cross the pond for no other reason than to sit in on a single one of his lectures.
Animuldok And coffee!!
Doug Rosengard And he is a lover of Rush (the band)
Animuldok Someone goes to UoN ;)
Professor Philip Moriarty is my favourite scientist who keeps a connection with the public. I hope he wins a nobel prize.
Vida András Winning a Nobel prize is excellent and all, but he already reaches *millions* of people with the work he does for this channel - that's a nobler achievement if you ask me!
Jonny Brooks Yeah I agree, it's a wonderful achievement, but think in his point of view. He shares the knowledge, but all he gets in return is appreciation from CZcams. It can be enough, but one would desire the ultimate reward in the physics carrier.
***** Thank you for the reply! (made me happy, man!) And yes, i understand this competition around a prize. What I truly wanted to express is that I want you to fulfil yourself and be happy. I can imagine it's rare to feel achieved as a scientist with all that frustration an occasional step forward. But still, I wish your name to reach the peak of science.
Vida András He won best overall lecturer at my uni, so he's got that which I guess is nice?
***** Do you have a clone by any chance or maybe 50 odd?
I find Professor Moriarty astonishing. How he draws these parallels between large scale objects like coffee of a guitar's string and quantum sized objects. Amazing. And such a likable person, too.
So, a circular quantum corrall of iron atoms. So does that make this a Ferrous Wheel?
... I'm Sorry.
Aaaargh!
I am not a fan of this drink. Coffee is just not my cup of tea.
Kishore Shenoy I see what you did there. ha!
Hshhahhaha
I love everything about this:
1. This guy's passion is infectious
2. His descriptions are fantastic
3. Brady asking questions to help explain it further and break it down for us.
Thanks so much!
Glad to see he didn't die at Reichenbach Falls
Why is Phil Moriarty a racist.....?
Been a subscriber to Sixty Symbols for quite a few years now and 2 weeks ago I attended a lecture by Professor Moriarty at Leeds University where he talked about this very phenomenon. Then 2 weeks later this video is uploaded, quite the coincidence!
Where can I find that paper about the best way to walk with coffee?
I love how professor Moriarty always manages to find interesting analogies of the microscopic (quantum) world with the macroscopic world.
His explanations of quantum mechanics through music in particular, struck a chord with me.
I love how passionate he talks about the ripples in his cup of coffee
His enthusiasm is infectious, his brilliance unbounded--and his teaching method, his engagement and energy with whatever subject--is a joy to behold.
Just imagine being one of his students...
Moriarty is so good at explaining this with such incredible enthusiasm, I love it!
man Dr. Moriarty is such a passionate and engaging teacher. i could listen to him all day. pity my physics professors manage to suck all the enjoyment and fun out of my favorite subject.
Professor Moriarty is definitely the reason why I'm subscribed to this channel hands down.
Period.
I love his enthusiasm. If only more educators/experts were like him.
Havent seen Professor Moriarty in a while, I love his enthusiasm for this stuff!
~Ripple in still water~
~When there is no pebble tossed~
~Nor wind to blow~
Every single project of Brady is fantastic. All of the people involved in these videos are unbelievable. Being an engineer, I am more inclined to the physics videos. But 'Periodic Videos' is amazing as well, many beautiful people involved in that. Professor Martyn Poliakoff is one a kind... ' Deep sky videos', 'Numberphile'... You name it! All of them are amazing. I have been having a lot of fun watching these videos. Thank you! Keep these videos coming!
Your presentations are simply amazing and your love of physics is infectious. Thanks.
Awesome, you should link the papers mentioned.
I love the high speed camera work!
Fantastic analysis, always inspiring me to understand more.
I love Prof. Moriarty's enthusiasm!
stuff like this just blows my mind. I can't help but find it interesting
At 3:42, Prof. Moriarty looks *so* close to setting up a travelling wave in the coffee, by whacking it with the guitar head and sending it all over the laptop!
This got me so excited, love this man's enthusiasm!
Super cool! Also I'm glad Brady and Professor Moriarty are talking again.
Another good analogy to be used might have been a seashell that you hold to your ear. It also amplifies certain frequencies from the noise that's always there and you suddenly hear something out of seemingly nothing.
As an electrical engineer and a human, copper and coffee are two of my favorite things.
Quality content. Exactly what I needed in my life.
Fantastic video, Moriarty's enthusiasm is quite infectious! This video caused me to spend hours modeling Bessel functions in an attempt to find the mode that appears in slo-mo at 6:36. I can't think of a better way to spend a Sunday afternoon!
So cool! :D
I love the slomotion and seeing how the world is put together with my own eyes.
I did not expect a video about coffee mechanics to be so interesting!
finally video with Prof Phil Moriarty
Any chance you could link to the paper about sloshing in coffee?
I second that motion!
Please :)
MrGevaY and I!
InterrobangActivate Me, too!
Elliott Collins It probably had coffee spilled all over it.
888SpinR Actually, you don't need a subscription to read it at that link.
It is simply incredible that something scales to this degree! Usually, scaling to such a degree (either up or down) cause a change.
Very important questions:
who drank the coffee?
did you think of heating it back up before drinking it?
You can do so many things with fluids in your kitchen, it is amazing. I think it was NASA who published a picture of a Kitchen-Sink, demonstrating how the Heliosheath (the are where the Solarwind interacts with the intergalactic medium) works. This would also make a nice episode Brady ;)
The questions that Brady asks (in general) shows that he is smart; he understands the concepts pretty well to ask such questions: how comes he can still seem so interested in relatively easy/simple concepts?
hakkihan tunbak Brady's questions aren't necessarily for his own benefit.
Question: What microphone do you use when you want to mic up a guest?
Very interesting video, especially considering it was a video about coffee ripples.
question: is the electron density in the quantum corral so high that in this image, you are able to see such the full wave pattern in one scan, or do you have to build up statistics (multiple imaging scans) to see this and then add the images together? If its the latter, how many scans are needed?
Undergraduate math & physics major - I had just finished a course in Fourier Analysis (where we found Bessel functions on circular drumheads) I would sit in the student union with a Styrofoam cup of coffee dragging it across the table to see what patterns I could excite. They left me alone. Thinking, I'm sure, I was really stoned...
Joe Burks But then, most everything is Bessel functions. Pick the order and type...
Actually the electrons which are inside don't necessarily have to be trapped permanently, because they can go through the barrier if it's thin enough. It's called quantum tunneling, and I'm sure you both know about it. I'm just disappointed it hadn't been mentioned in the video. If I'm not wrong the whole idea of the pilot wave theory as one of the interpretations of Quantum mechanics is based on that phenomenon. Keep up the great work guys!
Yaaay! Prof. Moriarty is back :)
If you could induce the same pattern in the coffee as you did in the corral, would the frequency/amplitude of the sound wave used to do so allow you to infer any information about electrons?
I am sure this has been asked before, but if you can manifest a a standing electron wave can you shape it (amplify, divide, and direct)?
And if you can do that, can you change the physical properties of the surface of the material?
When you talk about the "waves of electrons" are you talking about the dual nature of individual electrons as both waves and particles, or is it more like the electrons move in clusters. Also, what is the measurement that was taken to produced that image (what property was measured)?
There is a resonant frequency associated with the coffee cup, but is there an analogy for the electrons? Also, is the size of the corral a variable or do there need to be exactly "x" number of iron atoms in the ring to make this pattern?
Do an episode on the Huygens-Fresnel principle.
How was the image of the electrons produced? The article refers to 'tunnelling spectroscopy' -- how does it work on such a small scale to produce such a smooth image?
Hold on, on the right frequency/amplitude, the light that reflects off of the coffee kind of give me the impression of that 2/3 to 1/3 kind of vibe when the quarks in a baryon is measured. Like, 2/3's of the epicenter is dark in one instance, and 2/3's of the epicenter is bright in the opposite. Any thoughts on that?
I love how exited this guy is about science.
Daniel Bernoulli & Frederick Bessel didn't even know quantum mechanics existed when they invented those functions used to solve Bessel's differential equations. Amazing how useful mathematics can be.
In the IBM picture, what is the analog to coffee frequency here? Why in the IBM picture do the trapped electrons form a standing wave with that particular frequency rather than a lower/higher one?
So what was the frequency inside the iron corral? Seems like it must have been extremely high.
Hey, can we get orbital hybrids? So what about sitting a cup within a bowel and looking at a model like benzene? Linear combinations of solutions to diffie-Q's, right?
I would have to guess that when you get that sloshing effect, it would be similar to clipping in an audio electronics engineering, that the system cannot accommodate the amplitude you would like.
Keep up the good work prof...soon, i hope you will find out that you can control that waves...
I really hope you will revolutionize coffee handling. Seeing this I dreamt of a time when coffee balancing is being taught in physics in school. No more would coffee have to endure being spilled.
My problem now is that I find it hard to maintain a 38 hz vibrating motion with my hand while carrying a cup a coffee. ;)
My question is, in the picture of the iron coral, the center of the patern seemed higher than the rest of the waves, but in the coffee cup the center seemed level, am I perciving it wrong or is there something behind what I described?
P.S love the videos, keep up the absolutely amazing work!
Questions: What creates the number of electron-waves inside the circle? Is it the "wavelength" of an electron? And does the wavelength change depending on the velocity factor (VF) of the material the electrons are flowing through?
Just as the coffee will have a higher number of waves when a higher harmonic frequency is chosen to vibrate the liquid in the mug, would it be possible to measure the wavelength of a single elctron by creating a smaller circle of Iron atoms?
Excellent video, can this image be used to give an estimation of the wave length of the standing wave that caused this pattern ? How are you sure that this pattern is caused by this "fluid" of electrons ? how can those electrons randomly distributed around the copper nucleus behave like a "fluid" ? did the electrons from the iron wall participate in this behavior ?
Its a very nice video.I have a question though. So they placed the atoms with a STM in their position. Did they use the same instrument to "take" the picture? DO the colours represent the displacement in z direction?
love those coffee macro shots
I have a question. Does light stop, or slow down at all, in absolute zero?
Another brilliant video. Wish I had money to support you.
Nice presentation. In order to produce a standing wave in coffee, all the waves must propagate at the same speed. The coffee is the media that controls the speed of the waves. In the SEM image, it is the electron fluid that is the media that controls the speed of the waves. Sound waves in air, same phenomenon. Light waves in "empty" space behave like they are in a medium.
Yas. Professor Moriarty. My favorite person on this channel
so is the interaction between the moving electrons and the ions forming the coral an electromagnetic interaction ?
And if so, what's the sign of the charge of the ions?
Is it negative ? then the force would be repulsive?
Are these macroscopic systems used as models for calculations at microscopic (nanoscopic) levels? Do they correlate well? What properties of electrons are being measured with these "molecular corrals"?
Quick questions here: Why do high speed videos seem to have such ridiculously high contrasts? It looks like a pushed color correction gone wrong. Is it not possible to give high speed video a normal color temperature?
I gotta have that music. Brady, can you help? Shazam thinks it is a track called Phantasma by Casanueva, but I can't find a track by that name on any of my sources.
Coffee and physics. Best. Video. Ever
Would the depth of the liquid effect the pattern on the surface against any given frequency? If not, why not?
In the image of the iron atoms adhered to the copper substrate, does the z-axis represent the electron density?
s there anything special abut the center of he pattern where they all construtivly interefere? like a poisson spot or even like an anti exciton?
is the wavelength of the electron wave(s) inside the circle in any way influenced by the diameter of the circle?
So you increase the amplitude a bit and it gets chaotic, but you turn it up more and it resolves to a clean pattern again, and presumably this goes on as the amplitude scales. I wonder if there's something interesting about the intervals of order that is universal.
Can we get a link to the paper on coffee sloshing? thanks!
where can we download the banging tune in the background? :D
dear Sixty symbols, can you please make a video about the physical impacts of low-frequency sounds waves at high amplitude? There are videos on YT of powerful subwoofers at cars easily rippin off paper, making cups "float" in the air,... What kind of forces do play at this kind of phenomena? Air pressure, wavelenght, etc?
What is the frequency of the waves that is causing the standing wave? E=hf?
They need to use the freq gen to trigger a strobe, so they can actually make the standing wave, stand. That makes it easier to do measurements.
Where did he get that coffee cup? I've looked everywhere for a match and i was going to have my cousin buy it for me for Christmas. Did you guys intentionally keep the link out? You never get a clear shot of the cup.
So, here is an analogy of something on the macro scale mimicking something on the quantum scale...so, is it just an analogy or is there something more fundamental linking the actions?
What would happen if you had an elliptical corral and wave sources at the foci? Rays emanating from one focus always bounce to the other. Would everything cancel out because of this?
TheMathKid The waves aren't emanating, they're resonating. Look up vibrations of a circular membrane on wiki, the animations will help you get a better of what's happening here. The modes of an elliptical membrane are pretty much the same - easy to find online too.
so the resonate wave occurs when the audio frequency is tuned to a harmonic of the radius of the cup?
TheZooman22 is that.... Or the electron wave function it's coditioned by confinement, to only resonate at certain frequencies (like resonating pipes)
I couldn't finish this video without getting myself my own cup of coffee
I encourage Professor Philip Moriarty to try to vibrate the coffee in a different shaped recipients such as squared ones. Some papers in PRL say that no matter what shape the recipient is, the phenomenon is the same. That doesn't seem to happen with the electrons.
Watching ripples in coffee is like a visual form of AMSR, it's really rather entrancing.
Awesome video :D
How did you get images this pretty out of a Phantom Miro, Ive only ever got washed out milky stuff out of them whenever ive used them hahaha
Link to that paper about not spilling my coffee?!?! This is information I really need to know :-)
Speaking of physics that spans a great size difference, this reminds me of another pattern, one fixed pattern that goes again and again and apparently is found in microscopic and cosmic scales.
Its like three circles one big one smaller and one even smaller than that, at least those are the most recognizable features of it. (it also has smaller circles along the edges)
Does anyone know what it is and what it is called? :)
mindblowing!
Does the temperature of the coffee make a difference?
Perhaps the excitation is orthogonal to the desired wave direction? Love Dr. Moriarty's enthusiasm! And politics, btw... and apparently he likes drop-D tuning.