![Sensors | Free Full-Text | A New Method for Acoustic Priority Vehicle Detection Based on a Self-Powering Triboelectric Acoustic Sensor Suitable for Low-Power Wireless Sensor Networks Sensors | Free Full-Text | A New Method for Acoustic Priority Vehicle Detection Based on a Self-Powering Triboelectric Acoustic Sensor Suitable for Low-Power Wireless Sensor Networks](https://www.mdpi.com/sensors/sensors-21-00158/article_deploy/html/images/sensors-21-00158-g001.png)
Sensors | Free Full-Text | A New Method for Acoustic Priority Vehicle Detection Based on a Self-Powering Triboelectric Acoustic Sensor Suitable for Low-Power Wireless Sensor Networks
![NWS Boulder on Twitter: "Today is the 217th birthday of the Austrian mathematician and physicist Christian Andreas Doppler. He discovered the principle, now known as the Doppler Effect, where the observed frequency NWS Boulder on Twitter: "Today is the 217th birthday of the Austrian mathematician and physicist Christian Andreas Doppler. He discovered the principle, now known as the Doppler Effect, where the observed frequency](https://pbs.twimg.com/media/En_5ZaGXUAIiPje.jpg)
NWS Boulder on Twitter: "Today is the 217th birthday of the Austrian mathematician and physicist Christian Andreas Doppler. He discovered the principle, now known as the Doppler Effect, where the observed frequency
![Mission PD: Drunken driver hit family, killing mother and hospitalizing father, children | ConchoValleyHomepage.com Mission PD: Drunken driver hit family, killing mother and hospitalizing father, children | ConchoValleyHomepage.com](https://www.conchovalleyhomepage.com/wp-content/uploads/sites/83/2023/01/Police-lights-911-980-sirens.jpg?w=869)
Mission PD: Drunken driver hit family, killing mother and hospitalizing father, children | ConchoValleyHomepage.com
![SOLVED: Both a siren passing by and radar exhibit the Doppler effect. What is the main difference between these two technologies? A. Radar absorbs sound waves, and the siren reflects them. B. SOLVED: Both a siren passing by and radar exhibit the Doppler effect. What is the main difference between these two technologies? A. Radar absorbs sound waves, and the siren reflects them. B.](https://cdn.numerade.com/ask_previews/e8e85e1b-70aa-4074-b06d-f13c89e02954_large.jpg)