Why do your ears pop?

Focus-Science and Technology - - Q & A - AN­TO­NIO HARDY, LON­DON LV

The air pres­sure on your eardrum is nor­mally bal­anced be­cause your mid­dle ear is con­nected to your si­nuses via a nar­row duct called the Eus­tachian tube. If the out­side air pres­sure changes too quickly though (in an aero­plane com­ing in to land, for ex­am­ple), the Eus­tachian tube can’t equalise the pres­sure fast enough and the eardrum bows in or out. The pop­ping sound oc­curs when the pres­sure re­bal­ances and the eardrum sud­denly flips back.

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