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Category: habitats – Page 50

►Is faster-than-light (FTL) travel possible? In most discussions of this, we get hung up on the physics of particular ideas, such as wormholes or warp drives. But today, we take a more zoomed out approach that addresses all FTL propulsion — as well as FTL messaging. Because it turns out that they all allow for time travel. Join us today as we explore why this is so and the profound consequences that ensue. Special thanks to Prof Matt.

Written & presented by Prof David Kipping. Special thanks to Prof Matt Buckley for fact checking and his great blog article that inspired this video (http://www.physicsmatt.com/blog/2016/8/25/why-ftl-implies-time-travel)

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THANK-YOU to our supporters D. Smith, M. Sloan, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, J. Rockett, N. Fredrickson, D. Holland, E. Hanway, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, F. Van Exter, S. Roulier, B. Smith, P. Masterson, R. Sievers, G. Canterbury, J. Kill, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, T. Wheeler, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, J. Alexander, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, S. Krasner, W. Evans, J. Curtin, J. Sturm, RAND Corp, T. Kordell, T. Ljungberg & M. Janke.

::References::
► Alcubierre, M., 1994, “The warp drive: hyper-fast travel within general relativity”, Classical and Quantum Gravity, 11 L73: https://arxiv.org/abs/gr-qc/0009013
► Pfenning, M. & Ford, L., 1997, “The unphysical nature of Warp Drive”, Classical and Quantum Gravity, 14, 1743: https://arxiv.org/abs/gr-qc/9702026
► Finazzi, S., Liberati, S., Barceló, C., 2009, “Semiclassical instability of dynamical warp drives”, Physical Review D., 79, 124017: https://arxiv.org/abs/0904.0141
► McMonigal, B., Lewis, G., O’Byrne, P., 2012, “Alcubierre warp drive: On the matter of matter”, Physical Review D., 85, 064024: https://arxiv.org/abs/1202.5708
► Everett, A., 1996, “Warp drive and causality”, Physical Review D, 53, 7365: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.53.

::Music::

Continue reading “Why Going Faster-Than-Light Leads to Time Paradoxes” | >

Another apple of the eye in the face of Dubai.

Dubai’s penchant for housing some of the world’s most magnificent creations is no secret. Beautiful buildings and jaw-dropping structures with breath-taking designs have helped the UAE capital build a solid foundation for its identity as one of the top tourist destinations throughout the globe. On the palindrome date of 22nd February 2022, Dubai added yet another feather in the cap to its stunning collection of architectural marvels as it unveiled the Museum of The Future — a standing tribute to science and technology that will allow the visitors an immersive experience of living the future. It will house some of the world’s most futuristic technologies, ideas, and innovative products.

The spectacular structure of the Museum of The Future is perhaps one of the most complex and complicated designs ever created and willed into solid reality in the history of architecture. So much so that His Highness Sheikh Mohammed bin Rashid Al Maktoum, the ruler of Dubai, has already touted it as ‘the most beautiful building in the world’ to give a tribute to its marvelous design. Talking more about the structure, the museum has an elliptical shape that has invited different symbolic interpretations. Some say the elliptical shape represents humanity and the void represents the unknown future. On the flip side, some have compared the structure to that of the human eye that is looking at the future.

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Project Harbour Club, by Levs Architecten, is an interesting new development in Amsterdam that involved renovating and extending a shipping terminal originally constructed in 1901. Most notably, the project transformed former industrial wine silos that were located on the site into unique rooftop homes.

Project Harbour Club is located in Amsterdam’s Cruquiuseiland, in the city’s eastern docklands. It’s made up of the original dock terminal building, a new entrance, a six-story L-shaped residential building that slots neatly into the site, and the three silo homes.

The silos were originally used to store bulk wine for the Dutch market. To make them safe for people to live in, they were first carefully cleared of any traces of harmful residues, had insulation fitted, generous glazing cut into place, and a comfortable and light-filled interior installed. This is spread over three floors and contains a dining area, kitchen, living room, bedroom, and bathroom.

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US home prices have soared to new heights and they keep on climbing, and some researchers and economists say they have seen signs of a housing bubble brewing.

Home prices are rising faster than market forces would indicate they should and are becoming “unhinged from fundamentals,” according to a new blog post written by researchers and economists at the Federal Reserve Bank of Dallas.

Until recently, the possibility of a bubble wasn’t widely supported. But after looking at housing markets across the US, the Fed researchers said new evidence is emerging.

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By Vanesa Castán Broto, University of Sheffield; Emmanuel Osuteye, UCL, and Linda Westman, University of Sheffield

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Flooding is common in informal settlements in Bwaise, a neighbourhood in the Ugandan capital Kampala. Bwaise’s residents are largely excluded from planning and local decision-making processes, and have poor housing and limited access to sanitation and other essential services.

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How to robotically build a human habitat in space…

Happening now.

Accelerate the accessibility and commercialization of cislunar space through cost-effective, habitable, scalable Infrastructure.

A talk with Sebastian Asprella CEO at ThinkOrbital: a commercial space-platform developer with a mission to accelerate the commercialization of cislunar space, focusing on On-orbit servicing, assembly and manufacturing technologies. Their flagship space-platform, the Orb2, is designed for a single-launch on-orbit assembly model, capable of delivering an internal spherical volume of up to 4000m3.

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There’s a gap on the electromagnetic spectrum where engineers can not tread.

The spectrum covers everything from radio waves and microwaves, to the light that reaches our eyes, to X-rays and gamma rays. And humans have mastered the art of sending and receiving almost all of them.

There is an exception, however. Between the beams of visible light and the blips of radio static, there lies a dead zone where our technology isn’t effective. It’s called the terahertz gap. For decades now, no one’s succeeded in building a consumer device that can transmit terahertz waves.

In the far infrared band of the electromagnetic spectrum, engineers are exploring the terahertz gap, which could lead to a wave of faster, more sensitive technologies.

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Devastating residential blazes and wildfires take a terrible toll in terms of deaths and injuries, as well as property loss. Today, researchers will report on a new type of coating that could limit the flammability of wood used in construction, potentially providing more time to escape fires and also curbing their spread. The environmentally friendly flame retardant could also be used for other flammable materials, such as textiles, polyurethane foam and 3D-printed parts.

The researchers will present their results today at the spring meeting of the American Chemical Society (ACS).

Home fires account for the majority of fire deaths and lead to billions of dollars in property damage every year, according to the National Fire Protection Association. Adding fire sprinklers and can help, but another approach is to make construction materials less flammable. That’s the goal of Thomas Kolibaba, Ph.D., who is developing a new for these materials. “This type of treatment, which could be deposited via dipping, spraying or pressure treatment, could make homes much safer,” he says. “The coating could reduce flame spread and smoke production, which could limit damage and give people more time to evacuate.” Unlike most current fire retardant treatments, its ingredients are environmentally benign, and it might also cost less, notes Jaime Grunlan, Ph.D., the project’s principal investigator.

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San Francisco firm Aidlin Darling Design has completed a low-slung home in California’s Palm Desert that is intended to contrast the boulders and trees found in its remote setting.

The three-bedroom family home is located on a rocky plateau in the arid landscape, with views of the Coachella Valley and San Jacinto Mountain Range.

This elevated vantage led to the name High Desert Retreat for the project, which earned a 2021 AIA Design Award in the interiors category.

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The classic arcade game Cyclone has attracted many players, along with their coins, thanks to its simple yet addictive gameplay. In its most basic form it consists of a light racing around a circular track, which the player then has to stop at exactly the right place. Arduino enthusiast [mircemk] made a home version of this game, which allows addicts to keep playing forever without running out of quarters.

Instead of an arcade cabinet, this smaller version has an upright 3D-printed ring that holds 60 WS2812 LEDs. A further six in the center of the ring act as a score counter. An Arduino in the base drives the LEDs and runs the game, which is based on an earlier iteration built by [oKeeg]. An interesting addition is a large homemade “arcade button”, which is large and sturdy enough to withstand any abuse inflicted on it by a frustrated player.

Retro-style sound effects and flashing light sequences give the game a bit of an arcade vibe, even without a big cabinet and piles of coins. Simple LED games like this are always great eye-catchers in any home or office; if you like this one, be sure to check out other LED games like the handheld LEDBOY, the one-dimensional dungeon crawler TWANG, and this LED racing game.

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