How to see with sound - Jacques S. Abramowicz

Discover how scientists and doctors used bats' ultrasound capabilities as inspiration for SONAR and non-invasive medical procedures.

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In a dark cave, bats can’t see much. But even with their eyes shut, they can navigate rocky topography at incredible speeds. This is because bats aren't just guided by their eyes, but rather, by their ears. It may seem impossible to see with sound, but bats, naval officers, and doctors do it all the time. How is that possible? Jacques S. Abramowicz digs into the unique properties of ultrasound.

Lesson by Jacques S. Abramowicz, directed by Sofia Pashaei.

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Thank you so much to our patrons for your support! Without you this video would not be possible! Jose Henrique Leopoldo e Silva, Elnathan Joshua Bangayan, Jayant Sahewal, Mandeep Singh, Abhijit Kiran Valluri, Morgan Williams, Kris Siverhus, Devin Harris, Joy Love Om, Pavel Zalevskiy, Marc Bilodeau, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Chris, Tim Leistikow, Renhe Ji, Ka-Hei Law, Leora Allen, Mark Morris, Misaki Sato, EdoKun, Boytsov Ilya, SookKwan Loong, Bev Millar, Lex Azevedo, Noa Shore, Kyle Nguyen, Michael Aquilina, MJ Tan Mingjie, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Siamak H, Manav parmar, David Lucsanyi, Anthony Kudolo, Ryohky Araya, Eduardo Briceño, Christophe Dessalles, Heather Slater, Yuh Saito, Fabian Amels, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Josh Engel and Andrea Feliz.

[karlamay_]

I am a sonographer, I do ultrasound procedures for a living. A lot of our patients don't know who we are and what we do. So thank you so much for this video, Ted Ed❤️

[atharvpatil]

One of the best thing about ted ed is the starting quotes

[wolverine]

For anyone who might not know.... SONAR stands for Sound Navigation and Ranging

[globisdead]

I just wrote a physics test and then this came up, I swear Ted-Ed is mocking me 😭 😭 😭

[zuiii_]

"Reality is a sound, you have to tune in to it
not just keep yelling."
-Anne Carson, Autobiography of Red

[Ferris]

Ted ed, the one channel I can trust to post a video at this day and not be a "" "prank" "" but actual content

[Skibbityboo]

I work with ultrasound, and this video is amazing!

[abhijitmeti]

Correction at 0:40 : The distance between two peaks is "wavelength" not frequency, frequency is number of waves per second.

[Alisca]

My mom's pregnant, and now I know how ultrasound works.

[Gamepro]

I’ve had an ultrasound on my shoulder to see my tendons I also had one on my stomach, I don’t remember why though, but I do remember asking the tech how the baby looked. She gave me a blank stare like she had heard that a million times from other guys. And I’m sorry to whoever that was for that terrible joke.

[shivpatel]

My mom does ultrasound, so it’s nice that they’re talking about it. So few people actually know what ultrasound is other than it has something to do with babies in the womb and bats.

[ooghaboogha]

i like how u guys have different art styles for different videos :D

[Neet-glch]

Baby: Wow, that is one weird witch...But at least her wand works fine. 2:46

[hannahbosman]

I'm glad TED did a video on my profession! I appreciate that it mentioned its many other uses beyond fetal monitoring. We see so much everyday, babies are only a small part of our jobs. There's few times that sonography is boring because every patient is different and you never know what you may find. It's a very rewarding and exciting part of the medical field.

[clementine]

The questions I didnt know i wanted the answers to

[Tornadoally]

I love the effort that Ted-Ed put into every video! It makes learning so enjoyable, especially when compared to traditional school. The animations and visuals help so much!

[emeraldemerson]

I remember when I got an ultrasound. The technician put the device on my skin WITHOUT putting the gel first!! I was shocked because it was so hot and hurt! She then looked at me funny and put the gel afterwards... the gel was freezing but it protected my skin. I thought it was weird that she didn’t put gel on me first. Thanks to this video, now I definitely know something fishy was going on. You’d think that she would know to put the gel on first...

[jinmo-ri]

I hope this channel continues to do a great job at making learning accessible to the public, especially now, in a time when we are reminded that health is not individual but a community responsibility.

[dailydoseofmedicinee]

What are the advantages of ultrasound?👇

They're generally painless and don't require needles, shots or cuts.

You aren't exposed to ionizing radiation, so the procedure is safer than X-rays and CT scans.

Ultrasound captures images of soft tissues that don't show up well on X-rays.

Ultrasounds are widely accessible and less expensive than other methods.

[rajattiwari]

My schedule before sleeping is sorted when TED ed releases a video.