This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (PhysOrg.com) — Trust Digital has proven that an attacker with the right knowledge and toolkits can remotely hijack a phone by sending an SMS message to it. The attack would be most effective if it took place in the middle of the night while you are asleep. Foldable phone opens into large OLED screen These attacks are real and can originate from any where in the world. Trust Digital recently announced software called EMM 8.0 that can help organizations protect employee phones from these types of attacks. For detailed information about EMM 8.0 software, please visit the Trust Digital Web site.© 2009 PhysOrg.com Explore further Citation: Security Alert: Beware of SMS Messages That Can Take Control of Your Phone (2009, April 20) retrieved 18 August 2019 from https://phys.org/news/2009-04-beware-sms-messages.html The attack, on your phone, would start by receiving a text message that would automatically start up the web browser and direct it to malicious Web site. The site would then download an executable file to the phone and steal all your personal data. The following video demonstrates this:
A synchrotron for neutral molecules This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Meijer is a scientist at the Fritz Haber Institute in Berlin, Germany. Working with a group of scientists from his institution, as well as from the Laser Centre at Vrije University in Amsterdam and the Institute for Molecules and Materials at Radboud University in Nijmegen, The Netherlands, Meijer demonstrated that it is possible to maintain control over neutral molecules traveling for a mile in a ring. Their work is published in Physical Review Letters: “Multiple Packets of Neutral Molecules Revolving for over a Mile.”“Our experiment is really about getting complete control over molecules in beams,” Meijer explains. “We have shown that it is possible to completely control these packets of neutral molecules, and keep them in circle orbit – while at the same time making them move very slowly.”The ring in question consists of 40 electrostatic focusing elements called hexapoles. The hexapoles keep a packet of molecules (for this experiment, ammonia) confined to a circular orbit. Even though we think of these types of machines as rather large, the setup in question is reasonably compact. “It fits almost on my table,” Meijer says. “The diameter is about 50 centimeters, making it possible to do the kinds of experiments we suggest with relative ease.”The ring setup allows for the injection of 19 separate packets of molecules, all of them moving at the same pace, trailing each other by a fixed distance. Meijer and his colleagues were able to keep this up as the molecule packets made enough round trips through the ring to surpass the distance of a mile. “Interesting things happen when you can store molecules that long,” Meijer points out. “We’ve found that there are interesting things that happen with black body radiation, and this device could be one way to study these effects without the normally complicated experiments seen in the past.”“Normally, your interaction time with a neutral molecule is quite small,” Meijer says, “only a millisecond. Our device allows you to extend the time to 10 seconds, providing the chance to study molecules much better. We can see how well we can control free molecules, and study them in more detail.”So far, Meijer and the members of the team have not learned anything new. “We used a molecule we understand very well, since our goal was to demonstrate that it is possible to have this level of control over these molecules,” Meijer explains. It’s the next step, he says, that should be exciting.“Right now, we have shown that we can control these molecules very well, with them all going the same direction,” Meijer says. “To study collisions, we are adding another beam that can inject molecules from the other side. Sometime next year, we should be able to set up for collision studies.”“We have little information about what happens during collisions at low energies,” he continues. “Once we start the collisions with our machines, we should begin learning something new.” Explore further 40-piece molecular synchtron used by the team for their experiment. Image credit: Fritz Haber Institute. More information: Peter C. Zieger, Sebastiaan Y.T. van de Meerakker, Cynthia E. Heiner, Hendrick L. Bethlem, André J.A. van Roij, and Gerard Meijer, “Multiple Packets of Neutral Molecules Revolving for over a Mile,” Physical Review Letters (2010). Available online: link.aps.org/doi/10.1103/PhysRevLett.105.173001 (PhysOrg.com) — When we think of molecular collisions, we often consider massive colliders, like the LHC, sending particles smashing into each other at very high energies. While this is interesting work, it’s not the only type of collision that requires study. “Normally, you have molecules colliding at high velocities,” Gerard Meijer tells PhysOrg.com. “But we don’t know as much about low energy collisions. Being able to control molecules, and slow them down could provide another interesting line of study at the fundamental level.” Copyright 2010 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. Citation: A milestone for molecular beams (2010, October 29) retrieved 18 August 2019 from https://phys.org/news/2010-10-milestone-molecular.html
Explore further Citation: Partnership unveils healthcare robot coach: Autom (2012, October 22) retrieved 18 August 2019 from https://phys.org/news/2012-10-partnership-unveils-healthcare-robot-autom.html © 2012 Phys.org PCH International is partnering with Intuitive Automata to create and bring to market what the two are calling a “healthcare robot coach.” They have named it Autom (a homophone of autumn). The purpose of the robot is to help people develop healthy eating habits. It sits on a table or countertop and serves as a tool to help people track what they eat, and also offers encouraging comments to help people achieve eating goals. Robot takes on battle of the bulge Autom speaks to its owner and follows his or her movements with its eyes, though only when touch activated. It also has a touch screen embedded in its belly that allows the user to enter food information. The robot can be used to track the caloric content of meals consumed or those being considered by accessing, via WiFi, an online database maintained by Intuitive. The company claims it has entered information for over 75,000 food items including those from many nationally known restaurants. The robot can also display historical information on its belly screen in a variety of formats, including graphs, to help users compare actual eating habits with objectives. The robot also offers encouraging comments to help the user eat the foods that are good for them and to avoid those that are not. In addition to following a person around a room with its eyes, Autom can blink or wink to add emotional heft to its encouraging commentary. Representatives from Intuitive say that the robot format, as compared to apps on a smartphone, allow for bonding to occur between human and machine, which in the end helps users achieve their eating goals via a relationship that develops between the two – similar to the benefit people derive from hiring a human healthcare specialist. Comments on the Autom website suggest that potential customers view the robot as a personal coach, akin to a human counterpart, because company engineers have programmed the Autom to learn about the person being coached and to adjust encouraging comments accordingly. They also announce that Autom will be available by the second quarter of next year and will cost $199, with an additional $19 surcharge per month for access to the online database. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
© 2013 Phys.org Play Low-resolution color movie showing an archer fish shooting a jet of water to a prey supported by a clear plastic film. During the shooting the mouth of the fish barely emerges from the interface between water and air, while the rest of his body remains submerged. The image sequence has been grabbed at 400 frames/s and is played at 25 fps. Credit: doi:10.1371/journal.pone.0047867.s001 All in all, it’s an amazing use of math and physics—all by a fish with barely any brains. Watching Archerfish in action, most would likely be impressed at the way they catch their food. They move to just below the surface then shoot a mouthful of water into the air. The water eventually reaches an insect perched on a branch or blade of grass and knocks it into the water. As the water is inflight, the fish is already on the move, positioning itself to where it knows the insect will land. Then it eats it.Vailati and his colleagues can’t explain how the fish is able to calculate the proper trajectory of its water blob, or how it knows when and where to position itself, but they are able to explain why the water expulsion technique the fish uses, is so successful. It comes down to principles of Physics.To start things off the researchers filmed the fish—slowing down the action to see what was happening. They discovered what seemed impossible—that the water was actually accelerating as it headed towards its target. Further investigation revealed how it was possible.First off, the fish pushes the water out harder the longer its spurt lasts. This means that the water at the tail end of the blob of water is moving faster than the water at the leading end. That would normally mean the water blob would flatten as it ran into itself and spread out. Not in this case, instead the fish uses a known fluid dynamics property called the Plateau–Rayleigh instability. This is where water moving as a stream brakes down into small pieces—small segments form and are eventually pinched off to create entirely separate, much smaller blobs, of liquid, all moving in the same direction as the original stream. So, because the tiny blobs are separated, the original blob doesn’t bunch up as it travels. But, then it does, as the tiny blobs in back catch up with the ones in front, just before it hits the targeted insect, knocking it, violently off its perch and into the water below. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen (Phys.org) —Alberto Vailati and colleagues at the University of Milan have uncovered a truly astonishing feat of physics used by spitting Archerfish to catch prey. Vailati et al report in a paper they’ve had published in the journal PLoS ONE, that the fish actually cause a mouthful of water they expel, to speed up, as it travels through the air on its way to its target. More information: Vailati A, Zinnato L, Cerbino R (2012) How Archer Fish Achieve a Powerful Impact: Hydrodynamic Instability of a Pulsed Jet in Toxotes jaculatrix. PLoS ONE 7(10): e47867. DOI: 10.1371/journal.pone.0047867AbstractArcher fish knock down insects anchored to vegetation by hitting them with a precisely aimed jet of water. The striking force of the jet at the impact is such to overcome the strong anchoring forces of insects. The origin of the effectiveness of such hunting mechanism has been long searched for inside of the fish, in the unsuccessful attempt to identify internal structures dedicated to the amplification of muscular power. Here we perform a kinematic analysis of the jet emitted by two specimens of Toxotes jaculatrix. We estimate that at the impact the jet conveys a typical specific power of about 3000 W/kg, which is well above the maximum specific power of the order of 500 W/kg deliverable by a vertebrate muscle. Unexpectedly, we find that the amplification of muscular power occurs outside of the fish, and is due to a hydrodynamic instability of the jet akin to those occurring in Drop-on-Demand inkjet printing. The investigated fish are found to modulate the velocity of the jet at the orifice to favor the formation of a single, large, water drop that hits the prey abruptly with a large momentum. The observed mechanism represents a remarkable example of use of an external hydrodynamic lever that does possibly not entail the high evolutionary cost needed for the development of highly specialized internal structures dedicated to the storing of mechanical energy.via Wired Citation: Researchers uncover amazing physics feat of spitting Archerfish (2013, December 3) retrieved 18 August 2019 from https://phys.org/news/2013-12-uncover-amazing-physics-feat-archerfish.html
© 2014 Phys.org (Phys.org) —It’s been a busy week for space scientists—a team of astronomers discovered the first Thorne-Zytkow object—it’s a weird type of hybrid between a red supergiant and a neutron star that looks like a regular red supergiant, except it has a different type of chemical signature, giving it away. Another team of astronomers found a new type of planet: The ‘mega-Earth’. It’s rocky and weighs 17 times as much as our own planet. And yet another team has found that surprisingly strong magnetic fields challenge black holes’ pull. Black holes surveyed had magnetic strength equal to their gravitational pull, the first such direct evidence of it. In related news, theories suggest there should be equal amounts of antimatter and matter in the universe, yet we’re not able to detect any unless we create it ourselves. Now a CERN experiment takes us one step closer to discovering where all the antimatter went. Surprisingly strong magnetic fields challenge black holes’ pull Also, graphene has been in the news an awful lot lately, due to its many interesting properties, yet because of its two-dimensional nature, it’s been limited in some respects. Now, however, scientists have found stronger 3-D material that behaves like graphene, making it easier to create the devices that were supposed to be based on graphene. In another groundbreaking effort, researchers have developed a new way to make laser-like beams using 250x less power—it’s fueled by electricity instead of light. Also groundbreaking was a report that a new therapy wiped out cervical cancer in two women. Two out of nine patients underwent complete remission. That’s very good news.In news on another front, scientists may have found a cure for laziness, as MIT lab designs workload-sharing robotic limbs. Why do heavy lifting all by yourself when you could strap a robot on your back and have it do all the work for you? It may be the wave of the future.And finally, for those people feeling squeamish about dying, comes word from researchers in Boston as Harvard confirms antique book is bound in human skin—they believe the skin came from a woman who went insane and died from a heart attack back in the 19th century. For those looking to avoid a similar fate, by not dying at all, one team of researchers has found the anti-diabetic drug metformin slows aging and lengthens lifespan—at least in roundworms. We’ll still have to wait to see if it might work for us humans, of course, but at least it gives us something to hold onto for now. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Explore further Citation: Barn owls found to suffer no hearing loss as they age (2017, September 20) retrieved 18 August 2019 from https://phys.org/news/2017-09-barn-owls-loss-age.html Journal information: Proceedings of the Royal Society B Credit: CC0 Public Domain Guard against hearing loss from fireworks