video thumbnail 8:29
Ultrasound gel does amazing things to sound waves

2019-01-17

[public] 742K views, 30.0K likes, 419 dislikes audio only

channel thumbSteve Mould

I was curious about the purpose of ultrasound gel. It's really interesting so I built this wave machine to explain how it affects sound.

Video produced in cooperation with Merck (https://www.youtube.com/user/merckgroup). Merck is known as Merck KGaA, Darmstadt, Germany in the United States.

Here's the link to Ode To The Future: https://curiosity.merckgroup.com/ode-to-the-future/?KO=StMo

Animations by Dom Burgess. His brilliant channel, Every Think, is here:

https://www.youtube.com/channel/UCGI000V6ZIAQf97MNybAaLQ

CORRECTION: when I calculate the efficiency of the ultrasound scanner without gel I come to a figure 1/10000%. But that would only be if there was a full on air gap. When pressed against the skin the situation is much less dire. The gel ensures a better acoustic coupling by preventing air gaps etc. Thanks to a couple of comments for pointing that out.

Thanks to these amazing patrons on Patreon for supporting my channel:

Glenn Watson

Joël van der Loo

Website: https://stevemould.com

Patreon: https://www.patreon.com/stevemould

Twitter: http://twitter.com/moulds

Instagram: https://www.instagram.com/stevemouldscience/

Facebook: https://www.facebook.com/stevemouldscience/

Buy nerdy maths things: http://mathsgear.co.uk


Intro
/youtube/video/AzZ7DjS4ti4?t=0
Ultrasound gel
/youtube/video/AzZ7DjS4ti4?t=75
Sound waves
/youtube/video/AzZ7DjS4ti4?t=173
Acoustic impedance
/youtube/video/AzZ7DjS4ti4?t=320
Caustic lenses are really weird 609,579 views
/youtube/video/wk67eGXtbIw
The bizarre flashing lights on a smartwatch 1,624,953 views
/youtube/video/BFZxlauizx0