Why You Can't Hear Volcanoes Erupt
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Even if a volcano is just a few miles away, you might not hear it erupt. How is that possible? It has to do with a phenomenon known as sound shadows! Hank will tell you all about it in this new episode of SciShow! Join us!
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer
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Sources:
http://mountsthelens.com/history-2.html
https://engineering.tiu.edu.iq//architecture/wp-content/uploads/2019/04/lecture-4.pdf
http://www.perseus.tufts.edu/hopper/text.jsp?doc=Perseus%3Atext%3A2001.05.0130%3Achapter%3D5#note-link4
https://www.nps.gov/civilwar/search-battles-detail.htm?battleCode=va014
https://gupress.gallaudet.edu/excerpts/FITSpreface.pdf
https://www.mit.edu/~azlokapa/questions/upwind.html
https://www.sciencedirect.com/science/article/abs/pii/S0012821X07001665
https://acoustics.org/pressroom/httpdocs/136th/ross.htm
https://wisconsindot.gov/Documents/doing-bus/eng-consultants/cnslt-rsrces/environment/trafficnoiseweather.pdf
https://www.researchgate.net/publication/225391538_Long-range_propagation_and_scattering_of_low-frequency_sound_pulses_in_the_middle_atmosphere
https://digitalcommons.longwood.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1028&context=chemphys_facpubs
https://salfordacoustics.co.uk/sound-waves/diffraction/diffraction-effects
https://www.researchgate.net/publication/224634672_The_Acoustics_of_Vessel_Collisions_with_Marine_Mammals
https://www.broward.org/Manatees/Documents/Gerstein_2002.pdf
https://aip.scitation.org/topic/aipthesaurus/p107p267?startPage=&ContribAuthorRaw=Cairoli%2C%20Maria
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8186962/
https://www.academia.edu/28151120/Architectural_Acoustics_ARE_320_ARE_320_Lecture_8
https://www.fhwa.dot.gov/environment/noise/noise_barriers/design_construction/design/design03.cfm
https://www.researchgate.net/publication/337489458_Audit_of_Auditoriums_in_an_Academic_Setting_Ghana
Image Sources:
https://www.gettyimages.com/detail/video/tungurahua-volcano-erupting-stock-footage/473173021
https://commons.wikimedia.org/wiki/File:MSH82_st_helens_plume_from_harrys_ridge_05-19-82.jpg
https://www.gettyimages.com/detail/video/orange-noise-protection-wall-on-a-freeway-highway-noise-stock-footage/1309289726
https://commons.wikimedia.org/wiki/File:Benson%27s_Battery_M_at_Fair_Oaks_1862.jpg
https://upload.wikimedia.org/wikipedia/commons/3/30/Battle_of_Fair_Oaks_Meagher.jpg
https://commons.wikimedia.org/wiki/File:The_Rescue_of_the_Colors-William_Trego.jpg
https://commons.wikimedia.org/wiki/File:Battle_of_Five_Forks_Kurz_%26_Allison.jpg
https://commons.wikimedia.org/wiki/File:Battle_of_Iuka.png
https://tinyurl.com/3ft2pzp5
https://tinyurl.com/4vkakbe9
https://tinyurl.com/yhe6huey
https://tinyurl.com/bddwnmzf
https://tinyurl.com/4vya6ju5
https://tinyurl.com/2p98pr3t
https://tinyurl.com/muyk52w9
https://www.gettyimages.com/detail/video/aerial-drone-shot-of-empty-seats-in-the-ravensburg-stock-footage/1238173206
https://www.gettyimages.com/detail/video/traffic-at-night-toronto-stock-footage/1033420460
https://www.gettyimages.com/detail/video/straight-motorway-highway-cars-passing-sound-barriers-stock-footage/1365048556
https://www.gettyimages.com/detail/video/new-city-highway-with-tunnels-in-krakow-poland-stock-footage/1435509020
https://www.gettyimages.com/detail/video/orange-noise-protection-wall-on-a-freeway-highway-noise-stock-footage/1309289726
https://www.gettyimages.com/detail/video/long-grass-blowing-in-the-wind-with-the-sea-in-the-stock-footage/1410037412
https://www.gettyimages.com/detail/video/young-man-contemplating-and-looking-away-and-dreaming-in-stock-footage/1356030071
https://commons.wikimedia.org/wiki/File:Circular_road_in_T%C5%99eb%C3%AD%C4%8D,_T%C5%99eb%C3%AD%C4%8D_District.jpg
https://commons.wikimedia.org/wiki/File:A_photograph_shows_the_area_of_the_Confederate_assault_on_Cemetery_Hill_not_long_after_the_Union_battery_repulsed_the_fierce_attack_by_the_Louisiana_Tigers_LOC_9157937073.jpg
https://commons.wikimedia.org/wiki/File:-Civil_War_View-_MET_DP248316.jpg
Even if a volcano is just a few miles away, you might not hear it erupt. How is that possible? It has to do with a phenomenon known as sound shadows! Hank will tell you all about it in this new episode of SciShow! Join us!
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer
----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/
TikTok: https://www.tiktok.com/@scishow
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Instagram: http://instagram.com/thescishow
#SciShow #science #education
----------
Sources:
http://mountsthelens.com/history-2.html
https://engineering.tiu.edu.iq//architecture/wp-content/uploads/2019/04/lecture-4.pdf
http://www.perseus.tufts.edu/hopper/text.jsp?doc=Perseus%3Atext%3A2001.05.0130%3Achapter%3D5#note-link4
https://www.nps.gov/civilwar/search-battles-detail.htm?battleCode=va014
https://gupress.gallaudet.edu/excerpts/FITSpreface.pdf
https://www.mit.edu/~azlokapa/questions/upwind.html
https://www.sciencedirect.com/science/article/abs/pii/S0012821X07001665
https://acoustics.org/pressroom/httpdocs/136th/ross.htm
https://wisconsindot.gov/Documents/doing-bus/eng-consultants/cnslt-rsrces/environment/trafficnoiseweather.pdf
https://www.researchgate.net/publication/225391538_Long-range_propagation_and_scattering_of_low-frequency_sound_pulses_in_the_middle_atmosphere
https://digitalcommons.longwood.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1028&context=chemphys_facpubs
https://salfordacoustics.co.uk/sound-waves/diffraction/diffraction-effects
https://www.researchgate.net/publication/224634672_The_Acoustics_of_Vessel_Collisions_with_Marine_Mammals
https://www.broward.org/Manatees/Documents/Gerstein_2002.pdf
https://aip.scitation.org/topic/aipthesaurus/p107p267?startPage=&ContribAuthorRaw=Cairoli%2C%20Maria
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8186962/
https://www.academia.edu/28151120/Architectural_Acoustics_ARE_320_ARE_320_Lecture_8
https://www.fhwa.dot.gov/environment/noise/noise_barriers/design_construction/design/design03.cfm
https://www.researchgate.net/publication/337489458_Audit_of_Auditoriums_in_an_Academic_Setting_Ghana
Image Sources:
https://www.gettyimages.com/detail/video/tungurahua-volcano-erupting-stock-footage/473173021
https://commons.wikimedia.org/wiki/File:MSH82_st_helens_plume_from_harrys_ridge_05-19-82.jpg
https://www.gettyimages.com/detail/video/orange-noise-protection-wall-on-a-freeway-highway-noise-stock-footage/1309289726
https://commons.wikimedia.org/wiki/File:Benson%27s_Battery_M_at_Fair_Oaks_1862.jpg
https://upload.wikimedia.org/wikipedia/commons/3/30/Battle_of_Fair_Oaks_Meagher.jpg
https://commons.wikimedia.org/wiki/File:The_Rescue_of_the_Colors-William_Trego.jpg
https://commons.wikimedia.org/wiki/File:Battle_of_Five_Forks_Kurz_%26_Allison.jpg
https://commons.wikimedia.org/wiki/File:Battle_of_Iuka.png
https://tinyurl.com/3ft2pzp5
https://tinyurl.com/4vkakbe9
https://tinyurl.com/yhe6huey
https://tinyurl.com/bddwnmzf
https://tinyurl.com/4vya6ju5
https://tinyurl.com/2p98pr3t
https://tinyurl.com/muyk52w9
https://www.gettyimages.com/detail/video/aerial-drone-shot-of-empty-seats-in-the-ravensburg-stock-footage/1238173206
https://www.gettyimages.com/detail/video/traffic-at-night-toronto-stock-footage/1033420460
https://www.gettyimages.com/detail/video/straight-motorway-highway-cars-passing-sound-barriers-stock-footage/1365048556
https://www.gettyimages.com/detail/video/new-city-highway-with-tunnels-in-krakow-poland-stock-footage/1435509020
https://www.gettyimages.com/detail/video/orange-noise-protection-wall-on-a-freeway-highway-noise-stock-footage/1309289726
https://www.gettyimages.com/detail/video/long-grass-blowing-in-the-wind-with-the-sea-in-the-stock-footage/1410037412
https://www.gettyimages.com/detail/video/young-man-contemplating-and-looking-away-and-dreaming-in-stock-footage/1356030071
https://commons.wikimedia.org/wiki/File:Circular_road_in_T%C5%99eb%C3%AD%C4%8D,_T%C5%99eb%C3%AD%C4%8D_District.jpg
https://commons.wikimedia.org/wiki/File:A_photograph_shows_the_area_of_the_Confederate_assault_on_Cemetery_Hill_not_long_after_the_Union_battery_repulsed_the_fierce_attack_by_the_Louisiana_Tigers_LOC_9157937073.jpg
https://commons.wikimedia.org/wiki/File:-Civil_War_View-_MET_DP248316.jpg
