Hackernews posts about Ultrasonic

Ultrasonic is a technology that uses high-frequency sound waves to detect and measure objects or distances, often used in applications such as sensors, payments, and coffee machines.

1. Ultrasonic investigations in shopping centres (www.windytan.com)
   351 points by GolDDranks 6 months ago | 139 comments
2. Ultrasonic Coffee (www.theguardian.com)
   108 points by alkyon 6 months ago | 90 comments
3. Plants let out an ultrasonic scream when their leaves are cut (www.businessinsider.com)
   42 points by hitr over 1 year ago | 2 comments
4. Measure wind speed and direction with ultrasonic anemometer and Arduino (how2electronics.com)
   27 points by momirlan about 1 year ago | 12 comments
5. Ultrasonic Chips Could Cut Interference in the IoT (spectrum.ieee.org)
   14 points by abe94 2 months ago | 5 comments
6. Plants emit ultrasonic sounds in rapid bursts when stressed, scientists say (www.theguardian.com)
   11 points by marban over 1 year ago | 2 comments
7. Ultrasonic Coffee – Does it taste good? (www.theguardian.com)
   7 points by pookieinc 6 months ago | 1 comments
8. Plants emit ultrasonic sounds in rapid bursts when stressed, scientists say (www.theguardian.com)
   5 points by yamrzou over 1 year ago | discuss
9. Coming 'ultrasonic' revolution could change wireless earbuds forever (www.cultofmac.com)
   4 points by CharlesW about 1 year ago | discuss
10. Ultrasonic Acoustic Attack Targeting Microphones and Voice Assistants (thedebrief.org)
    4 points by DerekBickerton over 1 year ago | discuss
11. The case against ultrasonic humidifiers (dynomight.net)
    3 points by ctoth about 1 year ago | 1 comments
12. First gigahertz ultrasonic circuit that uses the principle of topology (group.ntt)
    3 points by sohkamyung 2 months ago | discuss
13. Capacitive Micromachined Ultrasonic Transducers (CMUT) (www.engineeringsolutions.philips.com)
    3 points by teleforce 6 months ago | discuss
14. Ultrasonic lens cleaning: A solid-state technology you didn’t know you needed (e2e.ti.com)
    3 points by zdw almost 2 years ago | discuss
15. DIY Ultrasonic Dog Repeller: Keeping Canines Away (www.wellpcb.com)
    2 points by thunderbong over 1 year ago | 2 comments
16. EEVblog – Glass ultrasonic delay lines – pictures (www.eevblog.com)
    2 points by YZF 3 months ago | discuss
17. The case against ultrasonic humidifiers (dynomight.net)
    2 points by lwhsiao 5 months ago | discuss
18. Noninvasive ultrasonic neurostimulation for high-quality vision restoration (www.nature.com)
    2 points by bookofjoe 6 months ago | discuss
19. Tiger beetles fight off bat attacks with ultrasonic mimicry (phys.org)
    2 points by PaulHoule 6 months ago | discuss
20. Tiger beetles fight off bat attacks with ultrasonic mimicry (phys.org)
    2 points by wglb 6 months ago | discuss
21. New ultrasonic technique can destroy toxic "forever chemicals" (www.freethink.com)
    2 points by Brajeshwar 12 months ago | discuss
22. The Future Sounds (When Employing Ultrasonic Speaker Technology) (www.eejournal.com)
    2 points by JoachimS over 1 year ago | discuss
23. A Super-Size Functional Tribute to an Ultrasonic Sensor (hackaday.com)
    1 points by stareatgoats 6 months ago | discuss
24. Ultrasonic Bonding: How It Works and Applications (www.laserax.com)
    1 points by teleforce 9 months ago | discuss
25. Ultrasonic Transformers: Towards a Noetic Frontier (www.blog.propheticai.co)
    1 points by TheBlapse 12 months ago | discuss
26. Detecting Bats with an Ultrasonic Sensor and Software Defined Radio (www.rtl-sdr.com)
    1 points by kungfudoi over 1 year ago | discuss
27. Stretchable wearable ultrasonic arrays 3D map tissues up to 4 cm beneath skin (www.nature.com)
    1 points by bookofjoe over 1 year ago | discuss
28. Plants emit ultrasonic sounds in rapid bursts when stressed, scientists say (www.theguardian.com)
    1 points by tambourine_man over 1 year ago | discuss
29. Ultrasonic Phased Array Levitation (old.reddit.com)
    1 points by martyvis almost 2 years ago | discuss
30. Ask HN: Most effective non-destructive way to reverse-engineer a PCB at home?
    5 points by keks24 almost 2 years ago | 3 comments