![]() ![]() The ultrasonic generators are devices that create ultrasonic sound waves, which can be used in some novel ways such as a safety deterrent or conditioning device. ![]() These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultrasonic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. The ultrasonic receiver is a device that can detect sound waves that are normally beyond the range of human hearing, and then translate this signal to audible frequencies. Erica Reagle, Better Homes & Gardens, 28 Apr. 2023 This diffuser uses ultrasonic waves instead of heat to circulate the aromatherapy, and can operate for up to eight hours at a time. This non-contact, non-destructive form of inspection locates specific sounds, even in areas with considerable ambient noise. Sofia Quaglia, Discover Magazine, 28 Apr. Passive ultrasonic listening detects high-frequency sound waves above the range of human hearing to conduct electrical and mechanical inspections. Noise level will vary with disturbance from adjacent traps, and condensate load. All of these can give an indication of flow, but become inaccurate as system conditions change. Elizabeth Berry, Good Housekeeping, 22 June 2023 These sounds were at an ultrasonic frequency that humans cannot naturally hear, however. Historically, diagnostic methods have included listening devices, optical sight glasses, temperature monitoring, and ultrasonic techniques. A good example of such a device is the Chameleon UltraSonic 18GSM voice recorder jammer. Luker, The Conversation, 10 July 2023 This ultrasonic cool mist model can cover up to 500 square foot and has a 360º mist lid that can be removed for easy cleaning, and its aesthetic teardrop shape won't take up too much space either. Usage Public Domain Mark 1.0 Topics FBI, FBI file, Federal Bureau of Investigation Collection nsia-fbi-files nationalsecurityarchive additionalcollections Language English. 2023 However, in scientific studies, ultrasonic repellent devices fail to repel mosquitoes. Ultrasonic Listening Devices Wiretapping, 1945-1989 by Federal Bureau of Investigation. 64 Office Memorandum united states government TO FROM THE DIRECTOR D, M, LADD CP SUBJECT: ULTRASONIC LISTENING DEVICE date: OctoYou were. Jackie Appel, Popular Mechanics, 30 Mar. 2023 Over time, the microphones picked up a series of noises that sounded like ultrasonic popcorn coming from each plant. 2023 That technology can take many forms, from wheel overheating detectors to ultrasonic rail scanners checking for defects. Elycia Rubin, The Hollywood Reporter, 17 July 2023 The researchers placed plants in soundproof boxes in a quiet room and sat two ultrasonic microphones nearby. ![]() The ULD-300 tests pressurized air lines, refrigeration systems, and steam lines for leaks. Amprobe’s ULD-300 converts these sounds into an audible range for easy detection.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |