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grrl-beetle · 1 year

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Ryoji Ikeda - Ultrasonics

#Ryoji Ikeda #Ultrasonics #music #Noton #Raster Noton #Spotify

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classicintp · 2 years

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My Very Heterosexual™ coworker famously doesn't use punctuation or grammar beyond his phone's auto capitalization.

#chats #conversations #texts #text messages #text conversations #work #ultrasonics #ut #classicintp at work

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truphysics · 1 year

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Ultrasonics

Introduction to Ultrasonics Ultrasonics refers to the study and application of mechanical waves with a frequency above the upper limit of human hearing, typically considered to be around 20 kHz. These waves can propagate through various media, including gases, liquids, and solids. Basics of Sound Waves Sound waves are longitudinal waves that travel through a medium by means of compression and…

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#Index #Sound Waves #Speed of Sound #Ultrasonics

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mudwerks · 9 months

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(via The buttons on Zenith’s original ‘clicker’ TV remote were a mechanical marvel - The Verge)

The Space Command is a product of mechanical engineering rather than electrical. By pressing a button on the remote, you set off a spring-loaded hammer that strikes a solid aluminum rod in the device, which then rings out at an ultrasonic frequency. Each button has a different length rod, thus a different high-frequency tone, which triggers a circuit connected to a microphone in the television to finish the command.

fascinating old-school tech

#zenith #tv #remote control #space command #mechanical #ultrasonic frequency.

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test-systems · 2 years

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AlphaGage+ Versatile equipment is used to perform integrity assessments of metal steel affected by corrosion or erosion processes as well as to measure precisely the thickness of a critical piece of equipment. For more information - https://www.flexitest.in/alpha-gage-plus-paint-and-coating

For any questions, please feel free to contact us by email - at [email protected] Or Call - +91-8291971983

#engineering #maintenance #ultrasonics #ultrasonictesting #alphagage #sonatest #flexitest

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sommersinc · 2 years

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Carded Staple Fiber

Affordable carded staple fiber and unmatched quality! Are you looking for both? Contact us and we shall get it sorted for you right away. For more information visit our website.

#Needle #Nonwovens #Ultrasonics #Sommers #austin sommers #point bonded fabric #needle loom for sale #best cardec chemical bond

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unbfacts · 8 months

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#Nature #Plants #Ultrasonic

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sixteenseveredhands · 9 months

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Grote's Bertholdia Moth: when bats are detected nearby, these moths emit a rapid series of ultrasonic clicks that act as a "jammer," interfering with the bat's sonar signals so that the moth can avoid detection

The Grote's bertholdia moth (B. trigona) is capable of emitting about 4,500 ultrasonic "clicks" per second. While there are other types of moths that use ultrasonic signals (in various ways) to avoid being preyed upon by bats, none of them have a more rapid-fire pace than this species.

The barrage of signals provides the moth with a way to remain hidden, because it interferes with the echolocation that bats use to navigate and locate prey.

As this article from Smithsonian explains:

... when approached by the bats, the moths produced their own ultrasonic clicking sounds at a rate of 4,500 times per second, blanketing the surrounding environment and cloaking themselves from sonar detection.

This article also expands upon the use of ultrasonic signals among moths:

Like other nocturnal insects, moths need to contend with bats. Unlike grasshoppers or beetles, they have soft bodies without spines or hard cuticles to protect them. Yet bats’ reliance on echolocation has given moths a way to avoid ending up as food: by tapping into their predators’ acoustic signals. Many have evolved ears that can hear the calls of bats. Some moths make ultrasonic squeaks, chirps, or clicks to warn their predators (honestly or not) that they are poisonous. Others generate near-constant, ultrasonic buzzes capable of jamming bat sonar.

Sources & More Info:

Smithsonian Magazine: How One Moth Species Can Jam Bats' Sonar Systems

The Scientist: Many Moths Speak Up to Ward Off Bats

Science.org: Moths Block Bats' Sonar

PubMed: High Duty Cycle Moth Sounds Jam Bat Echolocation

Journal of Theoretical Biology: Neural Representation of Bat Predation Risk and Evasive Flight in Moths

#moth #lepidoptera #biology #grote's bertholdia #Bertholdia trigona #adaptation #evolutionary arms race #bats #nature #echolocation #cool bugs #tw insects #ultrasonic animals #arthropods #bugs #weird animals

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why-animals-do-the-thing · 2 years

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How do you feel about the "Bark No More"? It's a birdhouse-looking thing that makes a high frequency (only dogs can hear it) whenever a dog barks to get them to stop.

Devices like that change behavior through positive punishment, if it’s successful. Assuming the dog associates the start of the (awful, painful) noise with barking, it basically suppresses the behavior by making the result so uncomfortable they stop. If the dog doesn’t associate the start of the noise with the behavior, then you’re just making them miserable with what they perceive is a random and somewhat inescapable stimulus.

It’s much more effective and humane to figure out why the dog is barking (boredom, barrier reactivity, etc) and solve that problem.

Also keep in mind that other animals and other people may hear it, especially children. I don’t know what frequency that specific device used (I can’t find much on it - I think it may have been discontinued at this point) but I can tell you that ultrasonic deterrents are hell for people with sensory issues. A family member put a few in their garden last year to deter the local raccoons, and the moment one went off when I was outdoors it was an instant migraine trigger. What’s more, because they’re so high-pitched, people who can’t hear them also don’t realize how incredibly loud they are. I could actually hear the deterrent noises from within the house. So they’re a great way to bother not only the animal you’re trying to quiet, but any other animal or young-ish human within hearing range.

#positive punishment #ultrasonic deterrents

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jeffbiblesupremacy · 1 year

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Loop dance @ Siam Paragon Summer Ultrasonic 2023

#jeff satur #loop dance #jeff gifs #siam paragon summer ultrasonic 2023

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classicintp · 1 year

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ow my brain

#brain hurty #op #phased array #ultrasonics

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moodysnowflake · 1 year

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I know everybody stopped reading after "Your plan has failed" and had to go back.

If you're saying something else, I don't believe you.

#ultrasonicscreeching

They did it. They flippin' did it.

#ultrasonic screeching #they did it guys #theres no sufficient amount of screaming that could give an idea of how much i yelled #they freaking did it #now will everybody stop bitching? probably no #but still #vash #look at him he majestic #vash the stampede #the humanoid typhoon #trigun stampede #trigun #tristamp

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viriborne · 11 months

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Living in Diasomnia would be an auditory nightmare because while Lilia is loudly blasting screamo as he plays CS:GO til 6 am on a school night, Malleus is playing the best of the 1700s in his room as he repaints his nails black.

Silver peacefully listens to heavy metal through his noise-canceling headphones as he sleeps.

#twst #no fucking clue what Sebek listens to. maybe just a white noise machine or something.#or like. ultrasonic rodent repellent noises

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othmeralia · 10 months

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