While ultrasonic death rays are still a thing of fiction, there is growing evidence that exposure to ultrasonic waves may cause adverse health effects
New technologies for mobile devices may use ultrasonic sound waves for a variety of purposes, from charging your phone when you enter your room to collecting data on which advertisements you watch. Pest deterrents, dog controllers, some automatic sliding doors, public address voice alarms — and even a device marketed in the U.K. as a teenager repellant to keep kids from loitering outside storefronts — also emit ultrasound at different frequencies.
These devices have varying effects on different subsets of the population, and many of these are covert, or inaudible, so the public usually doesn’t know when they are exposed.
Regulation of these emerging technologies is in many ways “the wild west,” according to Timothy Leighton at the University of Southampton, who wrote a guide for moving forward in today’s new world of ultrasonic exposure. His work outlines a logical approach for advancing research on ultrasonics.
“I looked at all this stuff, and I said, ‘This is an amazing detective story,'” Leighton said. “I began to pull together a picture that, in fact, the public was being exposed.”
Leighton is an expert in ultrasonics and underwater acoustics, who analyzed the landscape of ultrasonic regulations. He discovered a string of regulations that were all based on insufficient data, but had been shared around the globe.
“It was extraordinary when you opened up this topic,” Leighton said. He found that many national safety guideline limits could be traced back to a handful of studies performed in the 1970s on “a small number of adult men, many of whom had experienced gunfire, some of whom had worked in the rock-n-roll hi-fi industry… So it was inadequate data on which to base standards.”
Emerging technologies are often marketed as harmless in terms of emitted ultrasound. Ultimately, Leighton found that these claims are not based on any scientific evidence.
He found a series of anecdotal complaints, ranging from nausea and dizziness to irritability and ringing ears, that were attributed to ultrasound exposure. However, there is little data in this field, partly because studies to test exposure on humans could be unethical. So, obtaining data from human subjects will require innovative approaches to research.
Leighton will describe his work uncovering the strange history and uncertain future of the use of ultrasonic sound waves during the 175th Meeting of the Acoustical Society of America, to be held May 7-11, 2018, in Minneapolis, Minnesota. He will also discuss why the 2017 incident in Cuba — when U.S. embassy workers experienced strange symptoms of hearing loss and confusion — was unlikely to have been caused by ultrasound.
“I think 70 years is too long to go with inappropriate guidelines,” Leighton said. “If it’s public exposure, you’re going to have children and newborns exposed as well, and we have no information whatsoever on how safe it is for them.”
The Latest on: Ultrasonic waves
via Google News
The Latest on: Ultrasonic waves
- 5 Industries Using Sound Wave Technology for Frictionless Data Transmission on December 11, 2018 at 5:15 am
such as medical imaging where ultrasound is used to observe internal body organs. The greatest power of sound is that it can travel where light and sight cannot. Oil and gas was the first industry to ... […]
- Ultrasound Devices Market is Making New Waves Throughout Medical Devices Industry: Analysis and Industry Forecast, 2014-2022 on December 10, 2018 at 1:37 pm
Global Ultrasound Devices Market for pediatric radiology was valued at $661 million in 2015, and is poised to reach $1,112 million by 2022, registering an estimated of CAGR 7.6% during the forecast pe... […]
- Micro-ultrasound Systems market booming by size, revenue and trend in 2018 examined in new market research report on December 10, 2018 at 12:48 pm
Micro-ultrasound is capable of anatomical imaging. Micro-ultrasound systems generate the sound waves from transducers and penetrate the living tissue for getting the image in 2D or 3D. Micro-ultrasoun... […]
- Global Ultrasound Market Detail Analysis Focusing on Key Players GE, Philips, Siemens, Boston Scientific, Toshiba, Carestream on December 10, 2018 at 6:37 am
utm_source=RW-AN Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is no different from 'normal' (audible) sound in its physical properties, e... […]
- Scientists levitate objects by just POINTING at them: Sound waves are used for the first time to control movement of tiny beads through the air on December 7, 2018 at 3:12 am
They did this by creating two beams of ultrasonic waves, between which the ball floats. Researchers from the University of Bayreuth in Germany presented their levitating ball at a conference in Tokyo. ... […]
- Ultrasound Skin Tightening Devices Market Global Industry Analysis, Trends and Forecast, 2017-2027 on December 6, 2018 at 4:36 am
In ultrasound skin tightening procedure, the micro-focused ultrasound waves are used to stimulate collagen production and resulted in the uplift of the face and neck of the body. Ultrasound skin tight... […]
- Elastography, ultrasound may accurately diagnose soft-tissue lesions on December 5, 2018 at 11:49 am
Shear-wave elastography (SWE) may help distinguish musculoskeletal soft-tissue lesions as benign or malignant in conjunction with conventional ultrasound, according to research published online Nov. 2... […]
- Qualcomm debuts new flagship Snapdragon chip, ultrasonic fingerprint sensor on December 5, 2018 at 9:43 am
an ultrasonic fingerprint sensor. It works by generating sound waves at a frequency inaudible to humans and measuring the pressure of those waves when they bounce back. The reader can be embedded ... […]
- Qualcomm announces first ultrasonic fingerprint reader: Headed to the Galaxy S10? on December 4, 2018 at 12:53 pm
"This is the future of fingerprint technology." Here's what you need to know about Qualcomm's ultrasonic 3D Sonic Sensor. The 3D Sonic Sensor fingerprint sensor developed by Qualcomm uses sound waves ... […]
via Bing News