Archive for the ‘computing’ category: Page 541
Jul 17, 2019
Is there an upper limit to WiFi speed?
Posted by Philip Raymond in categories: computing, internet
As with many of my recent posts, this was originally a reply to a member of Quora, a Q&A web forum. But, it fits within Lifeboat’s educational mission and our fascination to push the limits of creativity and tech.
Is there a theoretical speed limit to WiFi devices over the next 10 years?
Because of four recent practices,* it is difficult to predict an upper limit for future overall throughput:
- Channel bonding
- Beam steering (MIMO shaping and directing the antenna pattern)
- Mesh Networking (i.e. subdividing a service area into micro-cells). Residential examples: Google WiFi, Netgear Orbi or TP-Link Deco
- Ultra wideband or Ultra-high frequency: In 2017, both Netgear and Asus introduced routers with 802.11ad WiFi (‘WiFi AD’). Although it still not widely adopted, it adds a 60 GHz radio to the existing 2.4 and 5 GHz radios, supporting 7 Gbps network speed).
![](http://awildduck.com/wp-content/uploads/2019/07/speed-1-300x177.gif)
Note that none of these techniques demands a high output power per channel. They all use ‘tricks’ to achieve higher speeds. But the tricks are scaleable. There really is no upper limit to any of these techniques.
Jul 17, 2019
Elon Musk on Joe Rogan — what is Neuralink
Posted by John Gallagher in categories: computing, Elon Musk, neuroscience
Neuralink is developing ultra-high bandwidth brain-machine interfaces to connect humans and computers.
Jul 16, 2019
Elon Musk’s Neuralink hopes to put sensors in human brains next year
Posted by Paul Battista in categories: computing, Elon Musk, neuroscience
Tonight Elon Musk will present the results of Neuralink’s work on brain-computer interfaces, watch live right here.
Jul 15, 2019
Neurotech Salon lets talk Brain Computer Interfaces, Neuroscience, and Code
Posted by Paul Battista in categories: biotech/medical, computing, neuroscience
Lets meet to talk brain computer interfaces, neuroscience, collaboration and coding. Lets pitch projects to one another, join existing projects, write code together, build new brain computer interfaces and more.
Thinking about past NeurotechX SF meetups I think I like the Salon aspect the most, where people just meet up to talk about neuroscience, brain computer interfaces and coding. So I’m renaming this event series to “Neurotech Salon”, it’s every two weeks in San Francisco at the Red Victorian! Get ready to meet interesting people to talk about things like the future of brain machine interfaces, you can pitch your project, or perhaps join someone elses project, you can talk about your work in developing software, hardware, or your work in medical research, or talk about your studies as an academic.
Confirm your RSVP by making a charitable donation to a real charity like this one here https://www.facebook.com/donate/837355799969191/ in the amount of $5 dollars or more. If you feel like you can’t afford it just skip a meal, and take the money you would have paid for that meal and apply it to this event.
Jul 15, 2019
Path to Million Qubit Quantum Computers Using Atoms and Lasers
Posted by Quinn Sena in categories: computing, particle physics, quantum physics
Atom Computing is building quantum computers using individually controlled atoms.
Ben has shown that neutral atoms could be more scalable, and could build a stable solution to create and maintain controlled quantum states. He used his expertise to lead efforts at Intel on their 10nm semiconductor chip, and then to lead research and development of the first cloud-accessible quantum computer at Rigetti.
Jul 15, 2019
Researchers develop computer model of ferrofluid motion
Posted by Quinn Sena in categories: biotech/medical, computing, nanotechnology
Ferrofluids, with their mesmeric display of shape-shifting spikes, are a favorite exhibit in science shows. These eye-catching examples of magnetic fields in action could become even more dramatic through computational work that captures their motion.
A KAUST research team has now developed a computer model of ferrofluid motion that could be used to design even grander ferrofluid displays. The work is a stepping stone to using simulation to inform the use of ferrofluids in broad range of practical applications, such as medicine, acoustics, radar-absorbing materials and nanoelectronics.
Ferrofluids were developed by NASA in the 1960s as a way to pump fuels in low gravity. They comprise nanoscale magnetic particles of iron-laden compounds suspended in a liquid. In the absence of a magnetic field, ferrofluids possess a perfectly smooth surface. But when a magnet is brought close to the ferrofluid, the particles rapidly align with the magnetic field, forming the characteristic spiky appearance. If a magnetic object is placed in the ferrofluid, the spikes will even climb the object before cascading back down.
Jul 15, 2019
Intel’s Neuromorphic System Hits 8 Million Neurons, 100 Million Coming by 2020
Posted by Quinn Sena in categories: computing, neuroscience
Researchers can use the 64-chip Pohoiki Beach system to make systems that learn and see the world more like humans.
Jul 15, 2019
Physicists Reverse Time for Tiny Particles Inside a Quantum Computer
Posted by Quinn Sena in categories: computing, mathematics, particle physics, quantum physics
Time goes in one direction: forward. Little boys become old men but not vice versa; teacups shatter but never spontaneously reassemble. This cruel and immutable property of the universe, called the “arrow of time,” is fundamentally a consequence of the second law of thermodynamics, which dictates that systems will always tend to become more disordered over time. But recently, researchers from the U.S. and Russia have bent that arrow just a bit — at least for subatomic particles.
In the new study, published Tuesday (Mar. 12) in the journal Scientific Reports, researchers manipulated the arrow of time using a very tiny quantum computer made of two quantum particles, known as qubits, that performed calculations. [Twisted Physics: 7 Mind-Blowing Findings]
At the subatomic scale, where the odd rules of quantum mechanics hold sway, physicists describe the state of systems through a mathematical construct called a wave function. This function is an expression of all the possible states the system could be in — even, in the case of a particle, all the possible locations it could be in — and the probability of the system being in any of those states at any given time. Generally, as time passes, wave functions spread out; a particle’s possible location can be farther away if you wait an hour than if you wait 5 minutes.
Jul 15, 2019
How to Turn Science Fiction into Science Fact
Posted by Paul Battista in categories: computing, space
George Church and Ramez Naam on the limitations of evolution, the power of matchmaking, and why we should send single-cell computers into deep space.