What Does Ultrasound Gel Do?

You may have had an ultrasound before, and wondered what that gel does. Well, that weird alien goop has a purpose, and it has to do with being like our weird human skin. Want more SciShow in person? We'll be at NerdCon: Nerdfighteria in Boston on February 25th and 26th! For more information, go to http://www.nerdconnerdfighteria.com/ Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Bella Nash, Kevin Bealer, Mark Terrio-Cameron, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- 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: General Ultrasound http://teachersinstitute.yale.edu/curriculum/units/1983/7/83.07.05.x.html http://courses.washington.edu/bioen508/Lecture6-US.pdf http://www.physics.utoronto.ca/~jharlow/teaching/phy138_0708/lec04/ultrasoundx.htm Ultrasound Gel http://www.two-views.com/ultrasounds/gel-goo.html https://healdove.com/health-care-industry/aquasonic_ultrasound_gel Acoustic Impedance http://www.schoolphysics.co.uk/age16-19/Sound/text/Acoustic_impedance/index.html Images: Sound Wave Diagram: https://commons.wikimedia.org/wiki/File:CPT-sound-physical-manifestation.svg