51–60 of 60 posts
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.
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
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
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seems a strange kind of vaccine side effect that only occurs directly after you contract the actual disease
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…
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.
Mythbusters did an episode on this! I totally cannot remember what they concluded
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Mythbusters did an episode on this! I totally cannot remember what they concluded
They did and if I remember correctly they concluded it was busted. I remember this episode in particular because I didn’t feel like their tests were completely sound and didn’t accurately model a civil engineered life-size bridge so at best the result should have been inconclusive.
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Mythbusters did an episode on this! I totally cannot remember what they concluded
They did and if I remember correctly they concluded it was busted. I remember this episode in particular because I didn’t feel like their tests were completely sound and didn’t accurately model a civil engineered life-size bridge so at best the result should have been inconclusive.
https://en.wikipedia.org/wiki/MythBusters_(2004_season)#Epis...
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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.
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 360°. In the video I learned that the important part are the micro cracks of t…
> I broke a glass singing, ...
I * never * broke a glass singing, ...
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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.
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.
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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.
The human throat cannot produce a completely pure tone. The bones and tissues of the skull do not resonate perfectly with all harmonics, resonating more strongly with the lower harmonics. This magnification of lower harmonics distorts the perceived tone of sound coming from inside the head.