What Makes Radiators Bang So Loudly?

If you hear a loud bang in the middle of the night, it is probably your radiator. But how does a hollow hunk of metal make such a loud noise?

We're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017

Hosted by: Stefan Chin
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
----------
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
----------
Sources:
http://www.reclaimedradiators.co.uk/hx.html
http://www.popularmechanics.com/home/interior-projects/how-to/a9680/how-to-shut-up-that-noisy-steam-radiator-16131140/
http://www.nytimes.com/1981/03/01/nyregion/home-clinic-knocking-the-noise-out-of-radiators.html
https://www.bobvila.com/articles/how-to-repair-a-noisy-radiator/
https://www.youtube.com/watch?v=hXjUj3L06MY
https://www.youtube.com/watch?v=y0VQOZqiw7U
http://www.bonfe.com/blog/how-to-stop-noisy-heating-pipes-banging/
http://www.startribune.com/fixit-many-factors-cause-gurgling-radiator/14403101/
https://www.plumbcare.com/blog/2016/09/6-unusual-central-heating-noises-what-they-could-mean

Видео What Makes Radiators Bang So Loudly? канала SciShow