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Even with a volcano just a few miles away, it’s possible you won’t hear it erupt due to a phenomenon known as sound shadows.
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Sources:
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Image Sources:
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https://www.gettyimages.com/detail/video/orange-noise-protection-wall-on-a-freeway-highway-noise-stock-footage/1309289726
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source
I love the whisper room in the Royal BC Museum. I guess that's the opposite of a sound shadow though
I'm concerned as to why the manatee is in a red dress with a brown/brunette wig. Do they identify as a brunette or did the artist just draw them with no concern for the Manatee's, which is an animal by the way, real truth?
Mt St Helens exploded in 1980. I lived in Portland, I was outside, and I didn't hear it. It was over 90 km away.
1:03 the eyebrows 😅
As someone who was taught in theater for example living in a mountain area, surprised you folks didn't include soundshadowing in hills and gullies that can mess with direction for novice hikers.
This is great technology to help people with dyspraxia, and I think I'll use some of these methods personally. Earphones are nice, but this sounds like a great way to add some much needed silence to my living space. I'm all about that Mental Health , dog.
TIL what sound shadows are. Very interesting! Love this show!
The eruption of Hunga Tonga-Hunga Ha'apai should've deafened everyone in Tonga. But while they were startled by the sound of the eruption, it wasn't super loud to them. Yet people in the Yukon reported hearing the blast as loud as a gunshot down the street. Clearly sound shadows saved the ears of the Tongans.
The music from a singer bounces off the walls and ceiling so it sounds incredible. However, you can't hear a pigeon on the stage because a coo sticks.
Given the recycling rates in the US, I would expect the majority of the capsules to be placed in a landfill. For that reason, I would not buy this sponsor's product.
Wait.. Mount St Helens blast in… 1983?? What!
I expected better from SciShow
Could sound elicit other things such as screechy or mumbling "ghostly" spounds? Some folks visit haunted houses or graveyards where they hear noises like language or thin, reedy vibrations like human speech.
It's not that people can't hear the sounds, it's that the sounds don't even reach them to be heard.
Kind of like somebody staying behind a concrete wall when someone on the other side is shooting at them.
It's not that you can't be affected by the bullets, but rather the bullets never reach you.
I know some people will think I'm nitpicking, but it's an important difference that getting it wrong, may have some really nasty disillusionment events in the future, especially the one with the bullets. 😉
Loudness is a way of life
So if a nuke went off nextdoor i wont hear it but my brother will… oh
As a former sound guy, I love this. Sound shadows are can be a powerfully useful tool (drum shields, soundproof foam panels/walls).
It can also be your WORST ENEMY, as depicted in the video. It gets even worse in outdoor shows.
I'm absolutely here for the manatee in a dress
Yo I have a question! Maybe it can worth
a video.
How come we haven't invented a "sound" that cancel other sounds? Like some tipe of vibration soundless to our ears but then interfered with normal sound they cancel out.
In the case of volcanos is it possible that reflections from the edge of the atmosphere would cause concentric cancellation of the direct wave at lower altitudes?
Is this a definition issue, if you cant hear it maybe its not "sound"
So is this how the people of Pompeii died?
I’m so sick of the sound of traffic… it’s 24/7. 😓
I'm wondering about walls along highways diffusing and bending soundwaves (@8:25) in conjunction with how sounds are extra loud if you happen to be directly beneath where a sound wave strikes/crashes [due to bending] (@3:44).
Does that mean, in the areas beyond the sound shadow boundaries, these soundbarriers are potentially increasing the traffic sounds they are meant to block?
The commitment to the operatic bit (and the manatee) was truly fantastic. Bravo!