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2. NYT ‘Connections’ Hints and Answers Today, Tuesday, February 11

   www.aol.com/nyt-connections-hints-answers-today...

   Plus, I'll reveal the answers further down. Related: The 26 Funniest NYT Connections Game Memes You'll Appreciate if You Do This Daily Word Puzzle Hints About Today's NYT Connections Categories on ...

3. SOSUS - Wikipedia

   en.wikipedia.org/wiki/SOSUS

   First SOSUS stations. Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet submarines.

4. Surface acoustic wave sensor - Wikipedia

   en.wikipedia.org/wiki/Surface_acoustic_wave_sensor

   Surface acoustic wave sensors are a class of microelectromechanical systems (MEMS) which rely on the modulation of surface acoustic waves to sense a physical phenomenon. The sensor transduces an input electrical signal into a mechanical wave which, unlike an electrical signal, can be easily influenced by physical phenomena.

5. Ultrasonic transducer - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_transducer

   The transducers typically use piezoelectric transducers [3] or capacitive transducers to generate or receive ultrasound. [4] Piezoelectric crystals are able to change their sizes and shapes in response to voltage being applied. [3] On the other hand, capacitive transducers use electrostatic fields between a conductive diaphragm and a backing plate.

6. Where did dinosaurs first evolve? Scientists have an answer

   www.aol.com/news/where-did-dinosaurs-first...

   Researchers are now proposing a surprising location for the birthplace of dinosaurs, based on the locations of the currently oldest-known dinosaur fossils, the evolutionary relationships among ...

7. Tonpilz - Wikipedia

   en.wikipedia.org/wiki/Tonpilz

   The term tonpilz or "acoustic mushroom" may refer to a certain type of underwater electro-acoustic transducer. By sandwiching active (i.e. piezoelectric or magnetostrictive) materials between a light, stiff radiating head mass and a heavy tail mass, the transducer can effectively operate as either a projector (source) or a hydrophone (underwater acoustic receiver).