How to see with sound - Jacques S. Abramowicz

Updated: November 15, 2024

TED-Ed


Summary

Bats navigate in darkness using ultrasound waves to create echoes, inspiring humans to develop SONAR technology. Ultrasound imaging is a non-invasive technique applied in various medical assessments, detecting conditions like tumors and gallbladder stones. The process involves emitting waves into the body, creating echoes off solid structures for detailed imaging. During fetal ultrasounds, conductive gel ensures contact with the wand, producing images by waves bouncing off internal organs. Different frequencies are utilized to penetrate to various depths for comprehensive imaging.


Bats' Use of Ultrasound for Navigation

Bats navigate in pitch-black caves using ultrasound waves with tall peaks to create echoes, allowing them to map their environment and inspired humans to develop similar technology like SONAR.

Ultrasound in Medical Imaging

Ultrasound imaging is a non-invasive technique used to evaluate organ damage, measure tissue thickness, detect various conditions like gallbladder stones and tumors. The process involves emitting ultrasound waves into the body, creating echoes off solid structures for imaging.

Fetal Ultrasound Imaging Process

During fetal ultrasound imaging, conductive gel is applied to the skin to ensure airtight contact with the ultrasound wand. Waves pass through liquids but bounce back from solid structures like bones, creating images of internal organs. Different frequencies are used to penetrate to various depths for detailed imaging.


FAQ

Q: How do bats navigate in pitch-black caves?

A: Bats navigate in pitch-black caves using ultrasound waves with tall peaks to create echoes, allowing them to map their environment.

Q: What technology was inspired by bats' use of ultrasound for navigation?

A: Bats' navigation using ultrasound waves inspired humans to develop similar technology like SONAR.

Q: What is ultrasound imaging used for?

A: Ultrasound imaging is a non-invasive technique used to evaluate organ damage, measure tissue thickness, and detect various conditions like gallbladder stones and tumors.

Q: How does ultrasound imaging work?

A: The process involves emitting ultrasound waves into the body, creating echoes off solid structures for imaging.

Q: What is the purpose of applying conductive gel during fetal ultrasound imaging?

A: Conductive gel is applied to the skin during fetal ultrasound imaging to ensure airtight contact with the ultrasound wand.

Q: How do ultrasound waves interact with different types of substances in the body?

A: Ultrasound waves pass through liquids but bounce back from solid structures like bones, creating images of internal organs.

Q: Why are different frequencies used in ultrasound imaging?

A: Different frequencies are used to penetrate to various depths for detailed imaging.

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