[HN Gopher] I broke a wine glass with my voice (2018) [video]
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I broke a wine glass with my voice (2018) [video]
Author : Brajeshwar
Score : 115 points
Date : 2023-03-08 17:38 UTC (5 hours ago)
(HTM) web link (www.youtube.com)
(TXT) w3m dump (www.youtube.com)
| agolio wrote:
| tl; dw:
|
| - sponsorship intro
|
| - high school physics
|
| - she sings at a glass, it breaks
|
| - guy at the end gives a slightly more advanced explanation
|
| - more sponsorship info to stretch the video to 10:00 mark and
| get more ad-revenue
|
| - smash that subscribe button for more
| taywrobel wrote:
| Well, a Ph.D.-level explanation wouldn't be nearly as
| approachable or interesting to the 1.2M people that watched it.
| agolio wrote:
| I have nothing against the video, and I am all for making
| science exciting for the broader audience. I just am not sure
| why it is at the top of HN.
| melenaboija wrote:
| Some people might be aware of her situation along with the
| impact of her work and maybe think that having one of her
| videos at the front page of HN could be a way to help.
|
| At least that why I upvoted it.
| agolio wrote:
| Seems you are right and I would have saved my criticism
| with that knowledge. Though I do think that information
| should have been in the submission title then.
|
| Ah well, best wishes to her.
| gus_massa wrote:
| I watched the video a few years ago.
|
| Before watching the video, I though the trick to break the
| cup was to sing very loud and very close to the tuned to
| natural resonance frequency of the glass, so the movement
| of the glass and the air inside are so big that breaks the
| resistance of the glass suddenly. Like swinging a swing
| until you got a 360deg.
|
| In the video I learned that the important part are the
| micro cracks of the glass. If you sign loud and tuned up,
| the micro cracks begin to grow, and grow, and grow, until
| they are so big that one of them is big enough to break the
| glass.
|
| The differences are that it's also important to sing for a
| long time to make the micro cracks grow, and that the exact
| moment is difficult to predict because it's not when the
| singer is extremely tuned but when the invisible crack are
| big enough.
|
| (I also learned that it's possible to cheat and make a
| small crack on the border to break the glass faster and
| consistently and impress your friends. (I broke a glass
| singing, so I never had an opportunity to used that trick
| anyway.))
| gmiller123456 wrote:
| I've actually seen many videos where the person says something
| like "Ok, now that I've talked long enough to get paid, lets
| get to what you came for".
| bil7 wrote:
| cool trick. Great channel. Mike's is also very high quality
| entertainment.
|
| Here's hoping Diana recovers from her ME/CFS swiftly.
| docflabby wrote:
| It's not something you recover quickly from :(
| jcims wrote:
| Dianna (Physics Girl) is currently experiencing severe
| complications from ME/CFS/long COVID. Per the last update on her
| twitter: The last weeks were scary. ER visits
| were hard. Dianna still can't walk, or even sit up in
| bed. But we see signs of progress. Sleeping more. Eating
| more. More treatments coming.
|
| Update here - https://www.youtube.com/watch?v=vydgkCCXbTA
|
| https://twitter.com/thephysicsgirl
| nightmarish wrote:
| [flagged]
| wetmore wrote:
| Your comment really rubs me the wrong way. Maybe it's the use
| of "mere"? It really discounts the amount of suffering ME/CFS
| causes people.
| leidenfrost wrote:
| I almost cried when I saw that video.
|
| The same way I watched science programs as a kid, then, as an
| adult, I'd say that I watched science videos with her,
| alongside other YT channels.
|
| Becoming a Patreon is the least I can do as someone on the
| other side of the world. I hope she can overcome long Covid and
| start her recovery soon.
| jancsika wrote:
| Long covid researchers-- is the current body of research
| converging on any cause(s) for the myriad long covid symptoms?
| Endothelial damage?
| therein wrote:
| [flagged]
| short_sells_poo wrote:
| Sorry, what is this elephant that you speak of? There are
| many theories about pretty much all COVID related things. You
| can ascribe significance to any of them without taking
| ownership if you are worried about being associated with
| something.
| gmiller123456 wrote:
| I give, what is the elephant?
| archon1410 wrote:
| Either "the vaccine caused this" or "Long COVID isn't
| real". Probably the former (or both?) considering the
| replies made by the commenter.
| wetmore wrote:
| Uh what is this elephant you are referring to?
| therein wrote:
| [flagged]
| Diederich wrote:
| Do you know if she got sick after taking the vaccines or
| after she got C19?
| therein wrote:
| [flagged]
| cma wrote:
| Wasn't CFS a widely reported outcome before vaccines were
| available?
| [deleted]
| timdiggerm wrote:
| It would be great if you told us what the elephant is
| snapcaster wrote:
| For anyone curious I'm pretty sure he means the vaccine and
| side effects
| mardifoufs wrote:
| I think it's more likely that they are questioning if long
| covid actually exists/isn't psychosomatic, given the
| context of the conversation
| therein wrote:
| [flagged]
| mardifoufs wrote:
| Then that doesn't really make sense, even less than usual
| but alright.
| zzzeek wrote:
| seems a strange kind of vaccine side effect that only
| occurs directly after you contract the actual disease
| gus_massa wrote:
| It's a real possibility
| https://en.wikipedia.org/wiki/Antibody-
| dependent_enhancement but it's one of the things that are
| checked in vaccine candidates before they are authorized
| for the general public. Quoting Wikipedia:
|
| > _Prior to the pandemic, ADE was observed in animal
| studies of laboratory rodents with vaccines for SARS-CoV,
| the virus that causes severe acute respiratory syndrome
| (SARS). However, as of 27 January 2022 there have been no
| observed incidents with vaccines for COVID-19 in trials
| with nonhuman primates, in clinical trials with humans,
| or following the widespread use of approved vaccines._
| therein wrote:
| [flagged]
| squeaky-clean wrote:
| Well it's not a gene therapy, so...
| JshWright wrote:
| I had a good friend go through the same complications (they're
| back to ~80% at this point, six months later). Watching that
| video was an eerily familiar experience...
| Erikun wrote:
| Terrifying disease.
| ortusdux wrote:
| I've heard that back in the day conservatories would use this as
| part of their entrance exam. It is a great way to test if someone
| can recreate a specific pitch by ear.
| causi wrote:
| I wonder what percentage of the failures to recreate a pitch
| are due to people not being able to adjust for the difference
| when they're hearing it through their own skull.
| bashinator wrote:
| I'm going to go with 0%, given that the fundamental pitch of
| a sound is unaffected by material interference. I suppose
| exceptionally high-pitched tones above several thousand hertz
| might be affected, but nothing within the range of a human
| voice.
| burningion wrote:
| I did this with Python and Pygame a ways back, and was also
| inspired by Mike Boyd. The code and an STL to focus a speaker are
| linked in a repo: https://www.makeartwithpython.com/blog/break-
| glass-with-reso...
| silveira wrote:
| https://www.patreon.com/physicsgirl to help her recovery.
| [deleted]
| pipeline_peak wrote:
| [flagged]
| vore wrote:
| This is an extremely weird thing to be bringing up in the
| comments here. I certainly wouldn't want anyone commemorating
| ("Rip"? really?) my Internet stalkers like this.
| pipeline_peak wrote:
| Well, Physics Girl will never read this thread, and you
| certainly don't have any stalkers to worry about :)
| TekMol wrote:
| Did he?
| pipeline_peak wrote:
| oh yeah...https://www.youtube.com/watch?v=xIuon6CUKz0
| [deleted]
| 0x7ce wrote:
| [dead]
| [deleted]
| galgot wrote:
| Dunno if true, but resonance frequency is the reason German
| military always avoided making goose step military marches across
| bridges. I suppose it would depends on the bridge anyway... But
| would have been fun to watch.
| taco_emoji wrote:
| Mythbusters did an episode on this! I totally cannot remember
| what they concluded
| bombcar wrote:
| Breaking stride on bridges has been known to (some) militaries
| since the Roman times iirc.
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