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Thought Shrapnel

A stream of things going in and out of the brain of Doug Belshaw

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    Personal, portable heating solutions

    I read this article when it was published on Low-tech Magazine earlier this year. Given the cost of living crisis is being exacerbated by gas prices this winter, Team Belshaw will be using hot water bottles as personal, portable heating solutions!

    A hot water bottle is a sealable container filled with hot water, often enclosed in a textile cover, which is directly placed against a part of the body for thermal comfort. The hot water bottle is still a common household item in some places – such as the UK and Japan – but it is largely forgotten or disregarded in most of the industrialised world. If people know of it, they usually associate it with pain relief rather than thermal comfort, or they consider its use an outdated practice for the poor and the elderly.

    […]

    Hot water bottles can be combined with a blanket, which further increases thermal comfort. If I put a blanket over the lower part of my body when seated at my desk, it traps the heat from the bottles and keeps them warm for longer. Even better is a blanket with a hole in the middle to stick your head through – a basic poncho – or a blanket with sleeves. If it’s large enough, it creates a tent-like structure that puts your whole body in the warm microclimate created by the water bottles. Draping long clothes over a personal heat source was a common comfort strategy in earlier times.

    Source: The Revenge of the Hot Water Bottle | Low-tech Magazine

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    A low-tech solution for personal warmth

    My family, especially the female members, have always been big fans of the hot water bottle. So much so, in fact, that one of my wife’s favourite presents was receiving a long snake-shaped hot water bottle that she can use in various configurations.

    As we face a bit of an energy crisis, hot water bottles are definitely something more people should be using, as this article explains.

    A hot water bottle is a sealable container filled with hot water, often enclosed in a textile cover, which is directly placed against a part of the body for thermal comfort. The hot water bottle is still a common household item in some places – such as the UK and Japan – but it is largely forgotten or disregarded in most of the industrialised world. If people know of it, they usually associate it with pain relief rather than thermal comfort, or they consider its use an outdated practice for the poor and the elderly.

    As early as the 1500s, people started to use all kinds of portable containers filled with hot coals from the fire. These were used as foot warmers, hand warmers, and bed warmers. Most were made of metal, either brass or copper, and placed inside wooden or ceramic enclosures to prevent skin burns. Over time, hot coals were replaced by hot water, which is a cleaner and safer heat storage medium.

    Initially, these first “real” hot water bottles were made from hard materials such as glass, metal, or stoneware. It was only with the invention of vulcanised rubber in the nineteenth century that more comfortable lightweight and flexible hot water bottles became an option. Spanish friends told me that hot water bottles used to be made from animal skins, but I could not verify this. It may well be true, because all over the world there’s a long tradition of using “water skins” for storing liquids.

    Source: The Revenge of the Hot Water Bottle | LOW←TECH MAGAZINE

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    Anything invented after you're thirty-five is against the natural order of things

    I'm fond of the above quotation by Douglas Adams that I've used for the title of this article. It serves as a reminder to myself that I've now reached an age when I'll look at a technology and wonder: why?

    Despite this, I'm quite excited about the potential of two technologies that will revolutionise our digital world both in our homes and offices and when we're out-and-about. Those technologies? Wi-Fi 6, as it's known colloquially, and 5G networks.

    Let's take Wi-Fi 6 first, which Chuong Nguyen explains in an article for Digital Trends, isn't just about faster speeds:

    A significant advantage for Wi-Fi 6 devices is better battery life. Though the standard promotes Internet of Things (IoT) devices being able to last for weeks, instead of days, on a single charge as a major benefit, the technology could even prove to be beneficial for computers, especially since Intel’s latest 9th-generation processors for laptops come with Wi-Fi 6 support.

    Likewise, Alexis Madrigal, writing in The Atlantic, explains that mobile 5G networks bring benefits other than streaming YouTube videos at ever-higher resolutions, but are quite a technological hurdle:

    The fantastic 5G speeds require higher-frequency, shorter-wavelength signals. And the shorter the wavelength, the more likely it is to be blocked by obstacles in the world.

    [...]

    Ideally, [mobile-associated companies] would like a broader set of customers than smartphone users. So the companies behind 5G are also flaunting many other applications for these networks, from emergency services to autonomous vehicles to every kind of “internet of things” gadget.

    If you've been following the kerfuffle around the UK using Huawei's technology for its 5G infrastructure, you'll already know about the politics and security issues at stake here.

    Sue Halpern, writing in The New Yorker, outlines the claimed benefits:

    Two words explain the difference between our current wireless networks and 5G: speed and latency. 5G—if you believe the hype—is expected to be up to a hundred times faster. (A two-hour movie could be downloaded in less than four seconds.) That speed will reduce, and possibly eliminate, the delay—the latency—between instructing a computer to perform a command and its execution. This, again, if you believe the hype, will lead to a whole new Internet of Things, where everything from toasters to dog collars to dialysis pumps to running shoes will be connected. Remote robotic surgery will be routine, the military will develop hypersonic weapons, and autonomous vehicles will cruise safely along smart highways. The claims are extravagant, and the stakes are high. One estimate projects that 5G will pump twelve trillion dollars into the global economy by 2035, and add twenty-two million new jobs in the United States alone. This 5G world, we are told, will usher in a fourth industrial revolution.

    But greater speeds and lower latency isn't all upside for all members of societies, as I learned in this BBC Beyond Today podcast episode about Korean spy cam porn. Halpern explains:

    In China, which has installed three hundred and fifty thousand 5G relays—about ten times more than the United States—enhanced geolocation, coupled with an expansive network of surveillance cameras, each equipped with facial-recognition technology, has enabled authorities to track and subordinate the country’s eleven million Uighur Muslims. According to the Times, “the practice makes China a pioneer in applying next-generation technology to watch its people, potentially ushering in a new era of automated racism.”

    Automated racism, now there's a thing. It turns out that technologies amplify our existing prejudices. Perhaps we should be a bit more careful and ask more questions before we march down the road of technological improvements? Especially given 5G could affect our ability to predict major storms. I'm reading Low-tech Magazine: The Printed Website at the moment, and it's pretty eye-opening about what we could be doing instead.

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