They have a few low speed projects running such as Changsha Maglev Express and Beijing Line S1. There is also a debate the validity of developing and deploying a 600km maglev train when a 400km high speed train is already feasible or 1000km ultra high speed vacuum tube maglev train. It would take a few years for the technology to mature and maybe ultra high speed vaccum tube maglev train can surpass 600km maglev train in development.
News on China's scientific and technological development.
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I have a Viltrox lens for my Fuji XT-20, its performance matches the top of the line Fuji lenses and the auto focus is actually even better because Fuji is very slow to update their lenses and some of them have very old, noisy, and slow electronics/actuators in them.
Given that it's sooooo much cheaper than Fuji's own lenses, I'll definitely buy Viltrox as long as they have the specs I'm looking for.
Speaking of cameras, where are the Chinese camera body makers? The old Japanese guards are so sclerotic that this market is ripe for a major disruption. Nikon, Canon, Sony, and Fuji dominate the market, but their electronics all suck and for most consumers the increased picture quality over modern smartphones isn't worth the user-unfriendliness of using their cameras.
I can't wait for the first manufacturer to come out with a camera that instead of having a LCD screen with controls on the back, but have a slot to insert a smartphone instead. Instead of the dinky little lenses that "hybrid" camera phones like the recent Xiaomi one, why not have a full on hybrid? Partner with Viltrox to make the lenses, and you could get full-frame quality with modern smartphone ease of use and processing power.
I did not use Fuji. That's probably why I didn't see a lot of comments on Viltrox lenses. It's been quite a few years since my eye sight became a problem for the hobby.
Interesting idea. But I am afraid that the market for such hybrid solutions won't be big enough to incentivize many manufacturers. I think this market will also become smaller as smartphones get better lenses. We will likely see more and more lenses of variable aperture and variable focus length on smartphones soon.
Heavy! University of Science and Technology of China: A new breakthrough in the field of quantum computers!
On September 6, the reporter learned from the University of Science and Technology of China that Academician Pan Jianwei and Professor Yuan Zhensheng of the school, in cooperation with Associate Professor Ma Xiongfeng of Tsinghua University and Associate Researcher Zhou You of Fudan University, used ultracold atoms bound in optical lattices to prepare di The multi-atom entangled state was prepared by the step-by-step expansion method of three-dimensional atomic array, generation of atomic bit entanglement pairs, and connection of entanglement pairs, and its entanglement properties were regulated and observed through microscopy techniques. Take an important step.
The findings were recently published in Physical Review Letters.
Quantum entanglement is the core resource of quantum computing , and the capability of quantum computing will increase exponentially with the number of entangled bits. Therefore, the preparation, measurement and coherent manipulation of large-scale entangled states are the core issues in this research field. Among the many physical systems that realize qubits, ultracold atomic bits in optical lattices have good coherence, scalability, and high-precision quantum controllability, making them one of the ideal physical systems for quantum information processing.
Since 2010, the research team of USTC has systematically studied the many-body phase transition of atoms in optical lattices, atomic interactions, entropy distribution dynamics, etc., and achieved more than 1,000 pairs of entanglement fidelity of 99.3% in 2020 atomic entanglement. This series of research work has promoted the improvement of the fidelity of atomic entanglement and the enhancement of the ability to manipulate atoms in parallel, laying the foundation for the expansion of the connection into a larger multi-atom entangled state, and then the development of quantum computing research.
However, in the previous work, due to the technically insufficient ability to manipulate single-atom bits, the large phase shift of the optical lattice, and the lack of an effective method for judging polyatomic entanglement, further connection of entangled pairs and measurement and control of polyatomic entangled states have encountered bottlenecks. question.
It really just needs a software solution. Everything else can be pretty much exactly the same as a mirrorless lens. Competition between social media influencer will only grow in the future, and having top notch picture quality can give one a leg up. All video-form influencers use dedicated video-focused cameras, and many picture-form influencers use dedicated cameras as well. IMO this hybrid camera body can completely take over the non-drone semi-professional videography market and almost all of the professional photography market.
For one, a lot of content is created in low lighting situations with relatively fast moving objects, there's simply no way to overcome the shortcomings of inferior optics and small sensors within the foreseeable future for those use cases. Another thing is that many amateurs like to share their photos quickly on SM, and having to transfer files alone is a big hindrance. Having the photos taken stored directly on your phone which you can do some light editing and share right away is a huge plus. For example, after I transferred the files, edited, and sent them to my wife, she's usually already shared the photos on her Instagram story and people have already interacted with them. They're clearly superior photos even when degraded to Instagram quality, and when she does post them in time she often gets a lot of reactions and questions about how she took them, but expediency stands in the way.
Ah, I did not think of the social media influencers. Yeah now I see such a combo product might be more useful to them.
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They could always just increase the target speed of the future maglev design. Even without a vacuum tube there’s probably growth margin for higher speeds. The vacuum tube maglev itself does not require a separate development plan from the maglev. That’s purely a question of infrastructure around the tracks and can always be retrofitted later. They could even build the tracks with future vacuum tube retrofit in mind if they’re really confident about going that route.