Saturday, September 03, 2022
Why it Matters that I just saw a Google Nest Hub control an Apple HomeKit smart plug
"The Matter standard is a lightbulb moment for the smart home
Matter, the upcoming standard that’s attempting to give the smart home a single unifying language, is almost here — and I was just treated to an early demonstration of the kinds of cross-platform compatibility that it should enable in the future. The demonstration was given by Eve, which produces a range of smart plugs, radiator valves, lighting, and security devices.
Historically, Eve has only ever worked with Apple’s HomeKit smart home platform. This is because it didn’t want to use cloud-to-cloud platforms, preferring to keep its devices on locally-controlled platforms for privacy and security. Eve has had an iOS app but no Android app, and it didn’t support Samsung’s SmartThings, Amazon’s Alexa, or Google Home. So it was notable to see all four platforms represented as I approached Eve’s booth at the IFA trade show in Berlin.
The reason for the shift is Matter. It’s perhaps the most significant thing to happen to the smart home since its inception, and in theory, we’re just months away from it becoming publicly available. Eve also announced it’s launching an Android app as a counterpart to its existing iOS app, but the big deal with Matter is that you don’t technically need a device manufacturer’s app at all. You can just set up and control your Matter-enabled devices with existing apps, whether it’s Apple HomeKit, Google Home, Amazon Alexa, or Samsung SmartThings apps.
That’s exactly what Eve was demonstrating at IFA. The Matter specification hasn’t been finalized yet, so none of the devices were running their final Matter-enabled firmware, but it was enough to see the kinds of functionality we might be able to expect when Eve’s devices get updated to support it.
The Amazon table contained a fourth-generation Echo speaker, along with a typical non-smart bulb plugged into an Eve Energy smart plug. Right now, Echo speakers can’t control Eve products, because the latter aren’t Alexa-enabled. But both products are compatible with Thread, one of the wireless protocols Matter works over and which can run locally. Eve was showing off how Matter will enable these two previously incompatible devices to speak to one another.
Eve’s booth reps were pretty insistent that no one other than them uses voice commands to control each of their smart plugs, so I was reliant on them to issue the commands that would control Eve’s devices. “Alexa, turn off my Eve Energy,” one rep asked a fourth-generation Amazon Echo. After an (admittedly quite long) beat, a bulb plugged into an Eve Energy smart plug clicked off.
Matter’s design makes it simple and seamless for users across different platforms to control the same smart home products natively. The result is a more cohesive experience, where whichever voice assistant you choose to use can control all your Matter-enabled devices and where configuration changes made to a device via one ecosystem will automatically be reflected everywhere else. Each of the four demo stations was using the same model of Eve Energy smart plug, without the need for separate models for different ecosystems. Because the accessory already supports Thread, updating it to support Matter was a relatively seamless process, Eve’s PR Director Lars Felber tells me.
On the Google table, there was both a Thread-enabled second-generation Nest Huband a Google Pixel 6 Pro running the Google Home app. First, Felber told the Nest Hub, “Ok Google, turn on my lights.” The instant the Google smart display recognized the command, the Eve Energy smart plug behind it clicked on the attached light bulb. The smart display had sent a signal to the smart plug over Thread to turn it on, thanks to Matter.
Using the Android phone running the Google Home app was less seamless in my demonstration. “Phones don’t do Thread,” Felber explained to me. As a result, the handset needed to communicate with the Nest Hub over a local Wi-Fi network for the smart display to send the command to the smart plug via Thread. Unfortunately, attempting to control the smart plug from the phone straight up didn’t work. The icon on the phone responded to my taps, but the light remained unchanged.
It was a shame to not see Matter working flawlessly, but trade show floors are admittedly one of the worst possible places to demonstrate technology like this. Felber told me that there were around 50 overlapping Wi-Fi networks in the trade show hall we were in, and even the least congested Wi-Fi channel still had nine devices on it. The Thread protocol also uses the same 2.4Ghz frequency as Wi-Fi, resulting in more interference. The amount of noise also made issuing voice commands difficult without yelling inches away from the stand’s various smart speakers. Plus, the Matter standard currently isn’t final — so some bugginess is perhaps to be expected.
A third table showed off Matter’s integration with SmartThings. Confusingly, there was only a single Samsung phone (a Galaxy S22) on this table, with no Thread border router in sight. But Felber confirmed to me that the company was using an Aeotec-manufactured SmartThings Hub — that for some reason was hidden inside the table — to transmit the signal to the Eve Energy. While totally misleading, the demo worked well. Using the SmartThings app to control the smart plug felt instantaneous.
Finally, there was the Apple table, the least surprising of the four because it demonstrated a hardware setup that the HomeKit-exclusive Eve lineup already supports just fine — albeit now updated to use Matter rather than just Apple’s HomeKit. Alongside the smart plug and bulb on that table was an iPhone 13 and a HomePod Mini smart speaker acting as a Thread border router. Controlling the smart plug via either was very responsive.
Although the launch of the Matter standard means Eve’s devices are about to get a lot more functional, existing owners shouldn’t need to buy new hardware to reap the benefits. Felber says Eve plans to push an OTA update to all its Thread-enabled products (which account for 14 of its 18-strong product lineup) to use Matter. The Eve Energy will be first, hopefully by the end of the year, with other devices like the Eve Door & Window, the Eve Weather, the Eve Motion, and the Eve Thermo following afterward.
Turning light bulbs on and off is a simple smart home party trick, and there are plenty of other examples of smart devices that work across different ecosystems. But seeing a currently Apple-exclusive accessory work (relatively) seamlessly across all these different ecosystems, with both voice and app control, has me pretty excited for what Matter might be able to achieve when it launches this fall.
Photography by Jon Porter / The Verge"
Tuesday, August 30, 2022
Monday, August 29, 2022
The Latest Webb Observations Don’t Disprove The Big Bang, But They Are Interesting
Okay, so let’s start with the obvious. ThThe big bang is not dead. Recent observations by the James Webb Space Telescope have not disproven the big bang, despite certain popular articles claiming otherwise. If that’s all you needed to hear, then have a great day. That said, the latest Webb observations do reveal some strange and unexpected things about the universe, and if you’d like to know more, keep reading.
Let’s start with the rumors. What about the new Webb data would suggest the big bang is wrong? The same type of data Hubble gave us years ago. We generally think of evidence for the big bang being centered around two facts: first, that more distant galaxies have a higher redshift than closer ones, and second, that the universe is filled with a cosmic background of microwave radiation. The first suggests that the universe is expanding in all directions, while the second suggests that it was once in a very hot and dense state. These are two of the Three Pillars of data supporting the big bang, the third being the relative abundance of elements in the early universe.
But these observations are just the foundation of the big bang model. We have long since expanded on these to create the standard model of cosmology, also known as the LCDM model. That is a universe that began with the big bang and is filled with matter, dark matter, and dark energy. Everything from the acceleration of cosmic expansion to the clustering of galaxies supports this standard model. And the standard model makes predictions about other observational tests, so we can further prove its validity. That’s where the latest claims of the “big bust” come into play.
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One of these secondary tests is known as the Tolman surface brightness test. It was first proposed in the 1930s by Richard C. Tolman and compares the apparent brightness of a galaxy with its apparent size. The ratio of brightness to size is known as surface brightness. Generally, the bigger a galaxy, the brighter it should be, so the surface brightness of every galaxy should be roughly the same. More distant galaxies would appear dimmer, but they’d also have a smaller apparent size, so the surface brightness would still be the same. The Tolman test predicts that in a static, non-expanding universe the surface brightness of all galaxies should be about the same, regardless of distance.
This isn’t what we see. What we observe is that more distant galaxies have a dimmer surface brightness than closer ones. The amount of dimming is proportional to the amount of redshift the galaxy has. You might think this proves that all those distant galaxies are speeding away from us, but it actually doesn’t. If those distant galaxies were speeding away, you’d have two dimming effects. The red shift and the ever-increasing distance. The Tolman test predicts that in a simple expanding universe the surface brightness of galaxies should diminish proportional to both redshift and distance. We only see the effects of redshift.
This fact has led some to propose a static universe where light spontaneously loses energy over time. It’s the so-called tired light hypothesis, and it’s very popular among big bang opponents. If the universe is static and light is tired, then the Tolman test predicts exactly what we observe. Hence no big bang.
Back in 2014, Eric Lerner et al published a paper making exactly this point. It caused a flurry of “Big Bang Dead!” articles in the popular media. The latest claims about Webb killing the big bang began with a popular article by the same Eric Lerner. So here we are. In fairness, back in 2014, the Hubble observations supported Lerner’s claim, and so do the latest Webb observations. But what Lerner conveniently omitted from his paper is that the Hubble and Webb observations also support the LCDM model.
It’s a common misconception that redshift proves that galaxies are speeding away from us. They aren’t. Distant galaxies aren’t speeding through space. Space itself is expanding, putting greater distance between us. It’s a subtle difference, but it means that galactic redshift is caused by cosmic expansion, not relative motion. It also means that distant galaxies appear a bit larger than they would in a static universe. They are distant and tiny, but the expansion of space gives the illusion of them being larger. As a result, the surface brightness of distant galaxies dims only proportional to redshift.
Of course, we know tired light is wrong because of the cosmic microwave background. A static, tired-light universe wouldn’t have any remnant heat from a primordial fireball. Not to mention the fact that distant galaxies would appear blurred (they don’t), and distant supernovae wouldn’t be time-dilated by cosmic expansion (they are). The only model that supports all the evidence is the big bang. Lerner’s argument is an old one that has long been disproven.
All that said, the James Webb Space Telescope has found some unusual things. Most significantly, it has found more galaxies and more distant galaxies than there should be, and that could lead to some revolutionary changes in our standard model. Our current understanding is that after the big bang the universe went through a period known as the dark ages. During this period the first light of the cosmos had faded, and the first stars and galaxies hadn’t yet formed. Webb is so sensitive it can see some of the youngest galaxies that formed just after the dark ages. We would expect those young galaxies to be less numerous and less developed than later galaxies. But the Webb observations have found very redshifted, very young galaxies that are both common and surprisingly mature.
It’s the kind of puzzling and unexpected data astronomers were hoping for. It’s why we wanted to build the Webb telescope in the first place. And it tells us that while the big bang model isn’t wrong, some of our assumptions about it might be.
Reference: Lerner, Eric J., Renato Falomo, and Riccardo Scarpa. “UV Surface Brightness of Galaxies from the Local Universe to z~ 5.” International Journal of Modern Physics D 23.06 (2014): 1450058.
Reference: Ferreira, Leonardo, et al. “Panic! At the Disks: First Rest-frame Optical Observations of Galaxy Structure at z > 3 with JWST in the SMACS 0723 Field.” arXiv preprint arXiv:2207.09428 (2022)."