Sustainability activist♻️◦ home-roasted espresso🤎◦ AJ4RF ◦🌻◦Astronaut 🔭/Space🛰️🚀/Cosmology🔮/Physics⚛️/Math🧮/Geek🤓 ◦QC skeptic🥱◦ LuaLaTeX✍️◦ The Telegoons🎭◦ Pink Floyd🎸◦POV: Scientific knowledge is uncertain🎲Scientific consensus is oxymoronic😕https://bsky.app/profile/nthderivative.bsky.socialhttps://bsky.app/profile/nthderivative.bsky.social/post/3ljldg42kac2zEssential reading about the Ukraine conflict: The reason why this is no time for Zelensky to grovel to Trump! www.msn.com/en-us/news/o...04 Mar 2025 20:44 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3ljldg42kac2zhttps://bsky.app/profile/nthderivative.bsky.social/post/3ljjwuy6wrc2uTragically, the willfully ignorant low-lifes currently occupying the White House are proud of their occupancy of the lower half of the bell curve. If anything disproves the adage that suits maketh the man, it would be their treatment of Volodymyr Zelensky in the Oval Office. He outshone them all! [contains quote post or other embedded content]04 Mar 2025 07:27 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3ljjwuy6wrc2uhttps://bsky.app/profile/nthderivative.bsky.social/post/3ljivd2khq22uAs far as I can recall, Lieutenant Columbo never lost a case. [contains quote post or other embedded content]03 Mar 2025 21:27 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3ljivd2khq22uhttps://bsky.app/profile/nthderivative.bsky.social/post/3lgkbcp4ops2yDoes the #timescape theory herald the end of the 'physics doldrums' that began with the elevation of string theory into an unobserved & unprovable set of beliefs (SUSY), and ended when the exponential improvements in sensor tech overwhelmed us with observations that demanded a more direct approach? [contains quote post or other embedded content]25 Jan 2025 06:18 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lgkbcp4ops2yhttps://bsky.app/profile/nthderivative.bsky.social/post/3lgjvh5332k2yHertz, Clerk Maxwell, and Heaviside would have enjoyed these products of millimeterwave machine vision! [contains quote post or other embedded content]25 Jan 2025 02:46 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lgjvh5332k2yhttps://bsky.app/profile/nthderivative.bsky.social/post/3lezy5op7cs2vMany if not most plastics go hand in hand with the fossil fuels they are made from. For succeeding generations to enjoy long lives in a world free from the endocrine disrupting effects of micro plastics pollution, we must find viable alternatives (such as glass, wood, & paper) before it's too late! [contains quote post or other embedded content]06 Jan 2025 01:27 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lezy5op7cs2vhttps://bsky.app/profile/nthderivative.bsky.social/post/3lep56dknnc26This sultry scene evokes for me the poignancy of Replicant's Soliloquy in Blade Runner (superbly portrayed by Rutger Hauer): "I watched c-beams glitter in the dark near the Tannhäuser Gate." [but unless we can learn to live & let live] "All those moments will be lost in time, like tears in rain." [contains quote post or other embedded content]01 Jan 2025 17:57 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lep56dknnc26https://bsky.app/profile/nthderivative.bsky.social/post/3ldrqrzgu2s23Kudos to Kiwi Astronomers! Dark Energy? Maybe we don't need it! Having done work many years ago at NZ's U of Canterbury Mount John Observatory, I could not help but notice this article (see the report below for a link to the open-source journal article). https://www.msn.com/en-us/news/technology/new-study-blows-dark-energy-theory-to-bits-says-universe-expansion-is-lumpy/ar-AA1wdWGc?ocid=winp2fptaskbarhover&cvid=04cbd640497b443fc102060b92f57973&ei=521 Dec 2024 01:28 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3ldrqrzgu2s23https://bsky.app/profile/nthderivative.bsky.social/post/3ldc3kj5t2s2jA friendly Photoshopped 'wave' to espresso PID fans! 😜 My setup: Rancilio Silvia with Auber PID + clockwork timer; Rancilio Rocky Grinder; Rancilio bottomless portfilter conversion with double basket; Matlow 58 mm SS Dosing Ring; TimeMore coffee scale; Espresso Gear 58 mm convex Barista tamper.☕14 Dec 2024 19:59 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3ldc3kj5t2s2jhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnlusgk6k2bAGC simulator runs original Apollo code https://github.com/virtualagc/virtualagc Ron Burkey runs Virtual AGC. You can download software that faithfully emulates the AGC and executes real Apollo flight software. Compiler is included if you want to compile the original AGC codef. Amazing. www.ibiblio.org/apollo/23 Nov 2024 23:00 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnlusgk6k2bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnlhs2yo22bThis cool bit of nerdism deserves wider recognition. While probably not as difficult as writing an AGC simulator (see the next post), it seems oddly more relevant now due to the interest in intelligent machines and machine vision. https://www.eetimes.com/using-a-xilinx-fpga-to-beat-your-son-at-guitar-hero/#23 Nov 2024 22:52 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnlhs2yo22bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnl4kd4rs2bFYI. I found this in my archive, labeled as "Nerdy stuff I did when I was in high school!" 😁23 Nov 2024 22:46 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnl4kd4rs2bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnjudxt722bThis picture tickled my physics funny bone!23 Nov 2024 22:23 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnjudxt722bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnjnysm522bIs QC the Emperor's New Clothes? Deloitte: "We don't yet know the 'magic number' of [qubits]...that will make QCs useful in the real world. ...it is unclear if we need...a thousand, a million or a billion to make QCs [useful] in multiple real-world apps." https://www2.deloitte.com/us/en/insights/industry/technology/technology-media-and-telecom-predictions/2022/future-of-quantum-computing.html23 Nov 2024 22:20 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnjnysm522bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnjikdgys2bThe wonders of VLB radio astronomy! https://www.wired.com/story/astronomers-radically-reimagine-the-making-of-the-planets/?bxid=5c48f15824c17c44341e91ff&cndid=55717517&esrc=bounceX&mbid=mbid%3DCRMWIR012019%0A%0A&source=EDT_WIR_NEWSLETTER_0_DAILY_ZZ&utm_brand=wired&utm_campaign=aud-dev&utm_content=WIR_Daily_062622&utm_mailing=WIR_Daily_062622&utm_medium=email&utm_source=nl&utm_term=P423 Nov 2024 22:17 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnjikdgys2bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbnjfmthtk2bA fun AI fact of broad significance. Like some cars, certain animals, e.g., army ants, can also be "trapped" by circles. They follow pheromone trails and can get stuck in a loop if the trail forms a circle, walking in circles until exhaustion sets in. Please reply if you know of other examples [contains quote post or other embedded content]23 Nov 2024 22:15 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbnjfmthtk2bhttps://bsky.app/profile/nthderivative.bsky.social/post/3lbaqtmyqqs24Apr 20, 2023 How old is JWST dusty galaxy CEERS-93316? Previously reported with redshift z=16.4 (a mere 250 My after Big Bang), revised spectrographic data modeling now gives z=4.9 (a less problematic 1,217 My after Big Bang)! https://physicsworld.com/a/jwst-spectrometer-refines-redshifts-of-distant-galaxies/ ArXiv: https://arxiv.org/pdf/2303.15431.pdf18 Nov 2024 20:24 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbaqtmyqqs24https://bsky.app/profile/nthderivative.bsky.social/post/3lbaqqtkixc24Apr 23, 2023 Planet Decision That Booted Out Pluto is Rooted in Folklore, Astrology, Study Suggests From ucf.edu https://ucf.edu18 Nov 2024 20:22 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbaqqtkixc24https://bsky.app/profile/nthderivative.bsky.social/post/3lbantayegk24👾💥DARK MATTER💥👾 What is it made of? Given the conflicting results (see chart, Physics 6, 136, Lang), is that even the right question? Somehow associated with matter, scientists know a little about what it isn't, but the mystery remains unsolved after many decades of research! #DarkMatter #Physics18 Nov 2024 19:30 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lbantayegk24https://bsky.app/profile/nthderivative.bsky.social/post/3lb6sse5i532nMT @coffee_facts No matter the tech historians who claim that BC stands for "Before Computers," it really stands for "Before Coffee."27 Nov 2013 06:48 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6sse5i532nhttps://bsky.app/profile/nthderivative.bsky.social/post/3lb6ssbnbxq27Scott Carpenter, of #NASA 's 1st astronaut class, the Mercury Seven, died today, 88. Thank you Scott, for inspiring my #technology career!23 Nov 2013 19:13 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6ssbnbxq27https://bsky.app/profile/nthderivative.bsky.social/post/3lb6ss77hwg22Columbia River's 100 navigable miles silting up; new ships too big; CR Bar is ranked world's most dangerous. Bad news for Port of Portland!23 Nov 2013 18:41 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6ss77hwg22https://bsky.app/profile/nthderivative.bsky.social/post/3lb6ss4uc242cAt $$$BUX prices I paid for my home #coffee setup (roaster, grinder, PID-controlled espresso machine) in a year. Now I'm saving $120/month!23 Nov 2013 17:10 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6ss4uc242chttps://bsky.app/profile/nthderivative.bsky.social/post/3lb6ss2ejq42kAn SBUX #Coffee latte uses >50 gallons of H2O. A homemade espresso in a reusable cup reduces this by >70%. WASTE LESS23 Nov 2013 16:48 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6ss2ejq42khttps://bsky.app/profile/nthderivative.bsky.social/post/3lb6srxwp2g2nDo you buy a morning #coffee Latte? Per year this adds 365 lids, cups, sleeves to waste stream, using >18K gal H2O!23 Nov 2013 16:40 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6srxwp2g2nhttps://bsky.app/profile/nthderivative.bsky.social/post/3lb6srsr4nv26April 2013 monster gamma-ray burst GRB 130472A only partially explained by theories of massive star collapse22 Nov 2013 22:45 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6srsr4nv26https://bsky.app/profile/nthderivative.bsky.social/post/3lb6srnrtya27Strong shades of the (fictional) HAL 9000 computer in this: Carnegie Mellon's Never Ending Image Learner (NEIL)22 Nov 2013 17:53 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6srnrtya27https://bsky.app/profile/nthderivative.bsky.social/post/3lb6srldzck2xGoogle patents a lie detecting tattoo. These should be mandatory for all politicians & public administrators!!!21 Nov 2013 19:19 +0000at://did:plc:xjvcetrrad3kbhya2pe5s2nx/app.bsky.feed.post/3lb6srldzck2x