All articles tagged with #vacuum
Originally Published 23 hours ago — by Gizmodo
Roborock is offering significant discounts on their F25 Ultra and F25 GT wet and dry vacuums, with savings of up to 40%, featuring advanced cleaning technology, self-cleaning, and powerful suction for versatile floor care, available for a limited time at Amazon and Roborock.
Originally Published 3 months ago — by valleyvanguardonline.com
Entering space unprotected is extremely dangerous due to the vacuum causing fluids in the body to boil, extreme temperature fluctuations, and exposure to cosmic radiation, which is why astronauts wear specialized suits that provide pressure, temperature regulation, breathable air, and radiation shielding.
Originally Published 3 months ago — by bgr.com
Firing a gun in space would not produce a loud bang or recoil like on Earth; instead, the bullet would travel in the direction fired, and the gun would recoil slightly due to conservation of momentum, with no sound because space is a vacuum.
Originally Published 7 months ago — by Yahoo
A recent study using 3D simulations suggests that, according to quantum field theory, light can be generated from nothing in a vacuum through high-powered laser interactions, revealing new possibilities for exploring exotic physics phenomena with upcoming petawatt laser facilities.
Originally Published 1 year ago — by Yahoo Life
Walmart is hosting a secret weekend sale with discounts of up to 80% on a variety of products including TVs, vacuums, kitchen appliances, tech gadgets, home organization items, jewelry, beauty and wellness products. Some notable deals include a 32-inch LG smart TV for under $150, a bagless vacuum from Eureka for more than half off, a 10-piece set of nonstick cookware for nearly 50% off, and a bestselling Fairywill Electric Toothbrush for $20.
Originally Published 2 years ago — by Phys.org
Researchers have demonstrated, through advanced simulations, that a strong magnetic field can cause quantum fluctuations in a vacuum to materialize into a solid-liquid vortex state with superconducting and superfluid properties. This exotic state, born from the vacuum, exhibits characteristics of both a solid and a liquid, while also displaying superconductivity and superfluidity. The strength of the magnetic field required to achieve this state is approximately 74 exatesla, and at an even higher critical magnetic field strength of 260 exatesla, the vacuum transitions into a state resembling the universe at its earliest stages, where the Higgs field condensate disappears. These findings have implications for understanding the behavior of quantum atmospheres above highly magnetized black holes and the evolution of the universe.
Originally Published 2 years ago — by SciTechDaily
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) have proposed improvements for an upcoming experiment at the European XFEL in Hamburg aimed at detecting quantum fluctuations in vacuum. By manipulating the vacuum fluctuations using an ultra-powerful laser, the researchers hope to observe changes in the polarization of an X-ray flash. The original plan involved shooting one laser flash, but due to the weak signal, the team now plans to shoot two laser pulses simultaneously to increase the chances of detecting the effect. If successful, the experiment could confirm the theory of quantum electrodynamics (QED) or reveal deviations that suggest the existence of new particles and laws of nature.
Originally Published 2 years ago — by The Conversation
Sound cannot travel through space because it is a vacuum with almost no matter to carry sound waves. In space, there is no air or molecules to vibrate and transmit sound. Therefore, there is no sound or echo in space. However, there are particles in space, and in certain conditions, such as in plasma, sound waves can travel, although at different speeds and wavelengths. NASA has even recorded the sound of a black hole stirring up plasma in deep space, although it is too low in frequency for the human ear to hear.
Originally Published 2 years ago — by Yahoo Life
Get ahead of hosting and gifting with the best Black Friday home deals of 2023. From cozy mattresses and pillows to high-powered vacuums and stylish furniture, there are discounts on a wide range of home essentials. Shop popular brands like Casper, Dyson, Keurig, and Henckels for significant savings. Don't miss out on these limited-time deals and start clicking around to upgrade your home before they're gone.
Originally Published 2 years ago — by Phys.org
Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) are preparing an experiment to detect quantum fluctuations in the vacuum, which could provide insights into new laws of physics. The experiment involves using an ultra-powerful laser to manipulate the vacuum fluctuations and change the polarization of an X-ray flash. By shooting two optical laser pulses simultaneously into an evacuated chamber, the researchers hope to increase the chances of measuring the effect. If successful, the experiment could confirm quantum electrodynamics (QED) or reveal deviations that suggest the existence of new particles and undiscovered laws of nature. The first trials are scheduled for 2024 at the European XFEL in Hamburg.
Originally Published 2 years ago — by IFLScience
Contrary to popular media portrayals, being in space without a spacesuit does not result in immediate bodily explosion, freezing, or burning. The lack of atmospheric pressure causes bodily fluids to evaporate, leading to bubbling and potential embolism. Holding your breath is not advised as it can cause lung rupture. Lack of oxygen results in loss of consciousness within 15 seconds and potential death within a minute. If rescued, recovery is complicated by dangerous solar radiation.
Originally Published 2 years ago — by Engadget
iRobot's Roomba j5 vacuum and mop combo machines, including the j5+ Combo and j5 Combo, are currently on sale with discounts of up to $200 off. The higher-end j5+ model offers features such as pinpoint no-mop zones and avoidance of common floor obstacles. The j5 Combo is a more budget-friendly option. The Roomba j7+ Combo, which can vacuum, mop, and automatically empty its contents, is also on sale.
Originally Published 2 years ago — by TechCrunch
iRobot has launched the Roomba Combo j9+, a premium robot vacuum and mop combo priced at $899 for the Roomba alone and $1,399 for the Roomba and dock. The new model features a 4-Stage Cleaning System, Dual Rubber Brushes, and Dry Rug Intelligence (D.R.I.) to effectively tackle dirt, pet fur, and debris. iRobot emphasizes its software capabilities, including Dirt Detective and SmartScrub, which prioritize cleaning based on need and provide a deep clean. The j9+ is available for presale in Europe, with Canada and the U.S. following suit.
Originally Published 2 years ago — by Livescience.com
Scientists have demonstrated that sound can travel through a vacuum under specific circumstances and over extremely small distances. By transmitting sound waves between two zinc oxide crystals and converting them into ripples within an electric field, the researchers were able to transmit disruptions that mirror the frequency of the sound waves. However, the transmission is limited to distances no greater than the wavelength of a single sound wave, and the method is not always reliable. The findings could have implications for the development of microelectromechanical components in technology.
Originally Published 2 years ago — by Phys.org
Physicists from the University of Jyväskylä have demonstrated that sound waves can be transmitted across a vacuum gap between two solids if the materials are piezoelectric. This phenomenon, known as tunneling, occurs when the size of the gap is smaller than the wavelength of the sound wave. The effect can be observed in a wide range of frequencies, from audio to ultrasound and hypersound. The researchers believe this discovery could have applications in microelectromechanical components and heat control.