Timeline for Will an electric megaphone amplify ultrasound and still send it in a narrow cone?
Current License: CC BY-SA 3.0
6 events
when toggle format | what | by | license | comment | |
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Jun 29, 2019 at 4:04 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
Feb 23, 2019 at 14:01 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
Mar 5, 2017 at 12:14 | answer | added | clive | timeline score: 2 | |
Mar 5, 2017 at 4:01 | comment | added | JMLCarter | Very much depends on the device. Most are for audible purposes, and will focus on that job. | |
Mar 5, 2017 at 3:47 | review | First posts | |||
Mar 5, 2017 at 4:17 | |||||
Mar 5, 2017 at 3:46 | history | asked | user147520 | CC BY-SA 3.0 |