ChaoticNeutralCzech

@ChaoticNeutralCzech@feddit.org

• ⁨Comment⁩ on ⁨Nintendon't⁩ ⁨⁨2⁩ ⁨days⁩ ago⁩:

  This one is for media, as an HDMI alternative. It goes up to 8K (192 Gb/s) and 480 W of power delivery. I hope there is no DRM on those.

• ⁨Comment⁩ on ⁨Internet email for dummies⁩ ⁨⁨2⁩ ⁨days⁩ ago⁩:

  Not anymore

• ⁨Comment⁩ on ⁨Internet email for dummies⁩ ⁨⁨2⁩ ⁨days⁩ ago⁩:

  WinRAR’s password and archive-splitting feature, I assume. 7-Zip was around since 1999 but not as popular.

• ⁨Comment⁩ on ⁨Oppa oppa⁩ ⁨⁨6⁩ ⁨days⁩ ago⁩:

  The statue is, unsurprisingly, in Gangnam. Personal judgement of the song aside, it made the district world-famous. That’s enough reason to erect a monument.

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  NFC implants are expensive but wristbands are not. Maybe that could work… I wonder if they make some that don’t look like mini watches, maybe a strap with a fashionably integrated chip and antenna?

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Lemmy automatically adds trailing slashes to links, apparently. However, you can cheat that by creating a hyperlink whose display text is “time.<zwsp>gov” where “<zwsp>” is a zero-width space.

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  You don’t have to print on temporary tattoo paper. Use regular paper and scissors to create a wristband. That is enough to test if the geometry is good enough for the scanner.

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Yeah, at 1 mm per pixel, this will not last long.

  How about an NFC implant? They can point to URLs too…

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Nah, it’s 30%, and very much depends on how the damage is laid out.

  • The corner squares (finder patterns) must keep a ⬜⬛⬜⬛⬛⬛⬜⬛⬜ cross-section at most angles. Most readers will accept even round ones. This applies to the smaller squares (alignment patterns) on larger QR codes too.
  • The zebra strips ⬛⬜⬛⬜⬛ (“timing patterns” if you’re a nerd) connecting the finder patterns must remain intact. Very few readers can correct for errors in that.
  • At this point, a good reader will be able to detect the QR code’s position in the image and its resolution (“version” if you consume ISO propaganda), and thus calculate the location of every pixel (“element”, ditto). Each of those will usually be sampled at a radius of around ⅓ of the distance between them. This allows for slightly wavy codes but also codes with rounded pixels or even unrelated content in the edges. (For the record, this is lazy and I prefer this version of the concept that uses almost up-to-spec QR codes.) Google Lens is more sophisticated than just using a 3D perspective transform, as I already mentioned.
  • One line of pixels around finder patterns is necessary for decoding (mask and ECC level info) and has basically no error correction so it should be also clear except the ⅓²=⅑ trick described above.
  • The data is stored with robust Reed-Solomon correction, which is byte-wise. You can safely cover about half of the advertised recoverable area with contiguous damage anywhere except the sections mentioned above. Still, you can damage more area by taking several things into account:
    • Know how the data is laid out in the specific QR resolution, and keep in mind that Reed-Solomon is bytewise. Thus, you want to damage as few bytes as possible, and for most total area, the strategy is to ruin all 8 bits in each. Without deeper analysis (looking up the byte layout), a good rule of thumb is that vertical damage aligned to an even number of columns from the right (skipping Column 7 with the vertical zebra stripe and thus no data) is likely to ruin the least amount of bytes partially.
      • Looking up the byte layout will also reveal that there are probably 1-7 unused pixels in the leftmost two columns, probably arranged like ⡿ in the very top of the data portion (Row 10 and below). These can be damaged without consequence!
    • Damage whose very dark spots line up with original black pixels (and vice versa) does not really count. Keep in mind that while using this strict definition of damage results in way fewer damaged bits, those are most likely not contiguous, so only a few 8-bit bytes will remain intact through this.
• ⁨Comment⁩ on ⁨I will be taking no followup questions. Thank you for your time⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  "We have ἤλεκτρον (elektron), can you show us?

  Amber jewelry

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Print one out at 1:1 scale and wrap it around your wrist, then test it. Curved surfaces are challenging for QR code readers. AFAIK Google Lens is one of the best ones (it will follow edges of pixels in wavy codes) but you’ll want any old open source one to work.

• ⁨Comment⁩ on ⁨What time is it?⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  time.gov

  Yes it’s already scannable…

  Why wouldn’t it be? I’ve drawn 2 QR codes on graph paper already and of course they work.

• ⁨Comment⁩ on ⁨Can someone fact check this⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  PLEASE DON’T starve the owl! There is another way: metabolism rate is proportional to the number of O₂ + hydrocarbons → CO₂ + H₂O reactions in the body, which can be measured as the amount of CO₂ created during respiration. For humans, the CO₂ concentration in exhaled air is close to constant, so by inhaling through the nose and exhaling through the mouth into a bag (and not consciously hyper- or hypoventilating), one can get a very good measurement of one’s metabolism rate in different scenarios (and the lag is seconds, not hours for nutrition!). This is obviously way more difficult to do with a flying owl (even in a wind tunnel) but perhaps a surgically inserted airflow meter could work.

• ⁨Comment⁩ on ⁨Fell off the horizon into a black hole⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  Haha, and insert chest joke

• ⁨Comment⁩ on ⁨These mugs are getting out of hand⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  Wordpress makes kitchen sink taps now?

• ⁨Comment⁩ on ⁨Fell off the horizon into a black hole⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  3D-flat as opposed to 2D-flat, or a bigger, crazier theory?

• ⁨Comment⁩ on ⁨She's got the talent⁩ ⁨⁨2⁩ ⁨weeks⁩ ago⁩:

  Objectively stupid way of saying “7 out of 9” or “78%”.

• ⁨Comment⁩ on ⁨HÖNKHALT⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  This arrangement does not hålt the hönking though

• ⁨Comment⁩ on ⁨Lara Croft is a Sociopath⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  There is a shitty 2007 TV movie by ČT Studio Brno (at this point, “shitty” is redundant) Kája a Zabi, where the protagonist, little boy Kája, mashes his keyboard in frustration, causing an off-brand Lara Croft to appear IRL. I haven’t seen the movie but she allegedly speaks broken Czech in a weirdly modulated voice, and keeps asking who Kája needs to kill (“zabít”, hence the nickname she gets). I assume she is just about as psychopathic as Lara.

  Image

• ⁨Comment⁩ on ⁨relationship⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  Jarrod Radnich’s piano arrangenent for He’s a Pirate ends with the “Sit on lower half of the keyboard” instruction. This is a good approximation of what the male portion of the polycule will sound like.

• ⁨Comment⁩ on ⁨relationship⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  That’s as many as grand piano keys!

• ⁨Comment⁩ on ⁨US presidents are getting younger over time⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  I want to see a Presidents vs States chart. It’s 47 vs 50 now, we better act quickly with DC and Puerto Rico. The last time we got this close, there was a civil war.

• ⁨Comment⁩ on ⁨It's all been downhill since this moment⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  This is not exactly what people received. The number of addresses did not fit and overflowed into the body.

  MCKINLEY@USC-ISIB
  MMCM@SRI-KL
  OT-ITS@SRI-KA
  BELL@SRI-KL
  MEADE@SRI-KL
  MARTIN@USC-ISI
  MERRILL@BBN-TENEX
  METCALFE@PARC-MAXC
  JMETZGER@USC-ISIB
  MICHAEL@USC-ISIC
  CMILLER@SUMEX-AIM
  MILLER@USC-ISI
  SCI@USC-ISI
  MILLER@USC-ISIC
  MITCHELL@PARC-MAXC
  MITCHELL@USC-ISI
  MITCHELL@SUMEX-AIM
  MLM@SU-AI
  JPDG@TENEXB
  MOORE@USC-ISIB
  WMORE@USC-ISIB
  JAM@SU-AI
  MORAN@PARC-MAXC
  ROZ@SU-AI
  MORGAN@USC-ISIB
  MORRIS@PARC-MAXC
  MORRIS@I4-TENEX
  OT-ITS@SRI-KA
  LISA@USC-ISIB
  MOSHER@SRI-KL
  MULHERN@USC-ISI
  MUNTZ;BIN(1529)@UCLA-CCN
  MYERS@USC-ISIC
  MYERS@RAND-RCC
  DRCPM-FF-FO@BBN-TENEXB
  NAGEL@USC-ISIB
  NAPKE@SRI-KL
  NARDI@SRI-KL
  NAYLOR@USC-ISIE
  LOU@USC-ISIE
  NESBIT@RAND-RCC
  NEUMANN@SRI-KA
  NEVATIA@USC-ECL
  NEWBY@USC-ISI
  NEWEKK@SRI-KA
  NIELSON@SRI-KL
  NLL@SUMEX-AIM
  NILSSON@SRI-KL
  NITZAN@SRI-KL
  NOEL@USC-ISIC
  NORMAN@PARC-MAXC
  NORTON@SRI-KL
  JOAN@USC-ISIB
  NOURSE@SUMEX-AIM
  PDG@SRI-KL
  OMALLEY@SRI-KA
  OCKEN@USC-ISIC
  OESTREICHER@USC-ISIB
  OGDEN@SRI-KA
  OKINAKA@USC-ISIE
  OLSON@I4-TENEX
  ORNSTEIN@PARC-MAXC
  PANKO@SRI-KL
  TED@SU-AI
  PARK@SRI-KL
  PBARAN@USC-ISI
  PARKER@USC-ISIB
  PEARCE@USC-ISI
  PEPIN@USC-ECL
  PERKINS@USC-ISIB
  PETERS@SRI-KL
  AMPETERSON@USC-ISI
  ASLAB@USC-ISIC
  EPG-SPEC@SRI-KA
  PEZDIRTZ@LLL-COMP
  CHARLIE@I4-TENEX
  UCLA-DOC@USC-ISI
  WPHILLIPS@USC-ISI
  PIERCY@MOFFETT-ARC
  PINE@SRI-KL
  PIPES@I4-TENEX
  PIRTLE@SRI-KL
  POGGIO@USC-ISIC
  POH@USC-ISI
  POOL@BBN-TENEX
  POPEK@USC-ISI
  POSTEL@USC-ISIB
  POWER@SRI-KL
  PRICE@USC-ECL
  RANDALL@USC-ISIB
  RANDALL@SRI-KA
  RAPHAEL@SRI-KL
  RAPP@RAND-RCC
  RASMUSSEN@USC-ISIC
  RATTNER@SRI-KL
  RAY@ILL-NTX
  FNWC@I4-TENEX
  BRL@SRI-KL
  RETZ@SRI-KL
  SKIP@USC-ISIB
  RICHARDSON@USC-ISIB
  RICHES@USC-ECL
  GWEN@USC-ECL
  OP-RIEDEL@USC-ISIB
  RIES@LLL-COMP
  RINDFLEISCH@SUMEX-AIM
  OP-ROBBINS@USC-ISIB
  ROBINSON@SRI-KL
  JROBINSON@SRI-KL
  RODRIQUEZ@SRI-KL
  MARTIN@USC-ISI
  ROM@USC-ISIC
  ROMIEZ@I4-TENEX
  ROSE@USC-ISI
  ROSEN@SRI-KL
  BARBARA@I4-TENEX
  ROTHENBERG@USC-ISIB
  RUBIN@SRI-KL
  JBR@SU-AI
  RUBINSTEIN@BBN-TENEXD
  RUDY@USC-ECL
  RUGGERI@SRI-KA
  RULIFSON@PARC-MAXC
  DALE@USC-ISIB
  SACERDOTI@SRI-KL
  SAGALOWICZ@SRI-KL
  ALS@SU-AI
  SANTONI@USC-ISIC
  SATTERTHWAITE@PARC-MAXC
  SAWCHUK@USC-ECL
  CPF-CC@USC-ISI
  SCHELONKA@USC-ISI
  SCHILL@USC-ISIC
  SCHILLING@USC-ISI
  SCHULZ@SUMEX-AIM
  SCOTT@SUMEX-AIM
  CPF-CC@USC-ISI
  OP-SEATON@USC-ISIB
  SENNE@LL
  NORM@RAND-UNIX
  AFWL@14-TENEX
  SHEPPARD@LL-ASG
  SHERWIN@USC-ISI
  SHERWOOD@SRI-KL
  SHORT@SRI-KL
  SHORTLIFE@SUMEX-AIM
  SHOSHANI@BBN-TENEX
  MARTIN@USC-ISI
  UCLA-NMC@USC-ISIE
  SDL@USC-ISIC
  SKOCYPEC@USC-ISI
  SLES@USC-ISI
  SLOTTOW@UCLA-CCN
  NOAA@14-TENEX
  SMALL@USC-ISI
  DAVESMITH@PARC-MAXC
  DSMITH@RAND-UNIX
  SMITH@SUMEX-AIM
  SMITH@USC-ECL
  MARCIE@I4-TENEX
  USARSGEUR@USC-ISI
  LOGICON@USC-ISI
  EPA@SRI-KL
  SONDEREGGER@USC-ISIB
  SPEER@LL
  AMICON-RN@USC-ISI
  SPROULL@PARC-MAXC
  PROJX@SRI-KL
  STEF@SRI-KA
  STEFIK@SUMEX-AIM
  STEPHENS@SRI-KA
  CFD@I4-TENEX
  STOCKHAM@SRI-KA
  STOTZ@USC-ISIB
  ALLEN@UCLA-SECURITY
  STOUTE@MIT-ML
  STRADLING@SRI-KL
  STROLLO@PARC-MAXC
  UCLA-0638@UCLA-CCN
  CRT@SRI-KA
  SUNSHINE@RAND-UNIX
  SUTHERLAND@SRI-KL
  SUTHERLAND@RAND-UNIX
  SUTHERLAND@PARC-MAXC
  SUTTON@USC-ISIC
  SWEER@SUMEX-AIM
  TAFT@PARC-MAXC
  TAYLOR@USC-ISIB
  TAYLOR@PARC-MAXC
  TAYNAI@SUMEX-AIM
  TEITELMAN@PARC-MAXC
  TENENBAUM@SRI-KL
  GREEP@RAND-UNIX
  TERRY@SUMEX-AIM
  TESLER@PARC-MAXC
  THACKER@PARC-MAXC
  PWT@RAND-UNIX
  TIPPIT@USC-ISIE
  TOBAGI@USC-ISIE
  TOGNETTI@SUMEX-AIM
  TORRES@SRI-KL
  TOWNLEY@HARV-10
  ELINA@UCLA-ATS
  TUCKER@SUMEX-AIM
  TUGENDER@USC-ISIB
  LLLSRG@MIT-MC
  UNCAPHER@USC-ISIB
  NOSC@SRI-KL
  UNTULIS@SRI-KL
  MIKE@UCLA-SECURITY
  AARDVARK@UCLA-ATS
  UZGALIS;BIN(0836)@UCLA-CCN
  VANGOETHEM@UCLA-CCN
  VANMIEROP@USC-ISIB
  VANNOUHUYS@SRI-KL
  VEIZADES@SUMEX-AIM
  VESECKY@USC-ISI
  AV@MIT-DMS
  VICTOR@USC-ISIC
  VIDAL@UCLA-SECURITY
  OP-VILAIN@USC-ISIB
  RV@RAND-UNIX
  SDL@USC-ISIC
  VOLPE@SRI-KL
  VONNEGUT@I4-TENEX
  VU@SRI-KL
  WACTLAR@CMU-10A
  WAGNER@USC-ISI
  WAHRMAN@RAND-UNIX
  WALDINGER@SRI-KL
  WALKER@UCLA-SECURITY
  WALKER@SRI-KL
  WALLACE@PARC-MAXC
  EVE@UCLA-SECURITY
  LOGICON@USC-ISI
  DON@RAND-UNIX
  WATSON@USC-ISIC
  WEIDEL@USC-ECL
  WEINBERG@SRI-KL
  JLW@MIT-AI
  LAUREN@UCLA-SECURITY
  WEISSMAN@I4-TENEX
  WELLS@USC-ISIC
  GERSH@USC-ISI
  WETHEREL@LLL-COMP
  RWW@SU-AI
  SCRL@USC-ISI
  TWHELLER@SRI-KA
  MABREY@SRI-KL
  WHITE@PARC-MAXC
  WHITE@SUMEX-AIM
  WIEDERHOLD@SUMEX-AIM
  WILBER@SRI-KL
  EPG-SPEC@SRI-KA
  WILCOX@SUMEX-AIM
  WILCZYNSKI@USC-ISIB
  WILE@USC-ISIB
  OP-WILLIAMS@USC-ISIB
  WILSON@USC-ISIB
  TW@SU-AI
  SCI@USC-ISI
  WISNIEWSKI@RAND-UNIX
  WOLF@SRI-KL
  PAT@SU-AI
  NELC3030@USC-ISI
  WYATT@HARV-10
  LEO@USC-ISIB
  YEH@LLL-COMP
  YONKE@USC-ISIB
  YOUNGBERG@SRI-KA
  ZEGERS@SRI-KL
  ZOLOTOW@SRI-KL
  ZOSEL@LLL-COMP
  DIGITAL WILL BE GIVING A PRODUCT PRESENTATION OF THE NEWEST MEMBERS OF THE
  DECSYSTEM-20 FAMILY; THE DECSYSTEM-2020, 2020T, 2060, AND 2060T.  THE
  DECSYSTEM-20 FAMILY OF COMPUTERS HAS EVOLVED FROM THE TENEX OPERATING SYSTEM
  AND THE DECSYSTEM-10 <PDP-10> COMPUTER ARCHITECTURE.  BOTH THE DECSYSTEM-2060T
  AND 2020T OFFER FULL ARPANET SUPPORT UNDER THE TOPS-20 OPERATING SYSTEM.
  THE DECSYSTEM-2060 IS AN UPWARD EXTENSION OF THE CURRENT DECSYSTEM 2040
  AND 2050 FAMILY. THE DECSYSTEM-2020 IS A NEW LOW END MEMBER OF THE
  DECSYSTEM-20 FAMILY AND FULLY SOFTWARE COMPATIBLE WITH ALL OF THE OTHER
  DECSYSTEM-20 MODELS.
  
  WE INVITE YOU TO COME SEE THE 2020 AND HEAR ABOUT THE DECSYSTEM-20 FAMILY
  AT THE TWO PRODUCT PRESENTATIONS WE WILL BE GIVING IN CALIFORNIA THIS
  MONTH.  THE LOCATIONS WILL BE:
  
                 TUESDAY, MAY 9, 1978 - 2 PM
                     HYATT HOUSE (NEAR THE L.A. AIRPORT)
                     LOS ANGELES, CA
  
                 THURSDAY, MAY 11, 1978 - 2 PM
                     DUNFEY'S ROYAL COACH
                     SAN MATEO, CA
                     (4 MILES SOUTH OF S.F. AIRPORT AT BAYSHORE, RT 101 AND RT 92)
  
  A 2020 WILL BE THERE FOR YOU TO VIEW. ALSO TERMINALS ON-LINE TO OTHER
  DECSYSTEM-20 SYSTEMS THROUGH THE ARPANET. IF YOU ARE UNABLE TO ATTEND,
  PLEASE FEEL FREE TO CONTACT THE NEAREST DEC OFFICE
  FOR MORE INFORMATION ABOUT THE EXCITING DECSYSTEM-20 FAMILY.
  

• ⁨Comment⁩ on ⁨Hobbies⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  Average People Hobbies: Culture War

  Rich People Hobbies: Class War

• ⁨Comment⁩ on ⁨We're all going home early today⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  See my other comment, metal in a microwave is sometimes OK but there is a good reason we scare people from trying it.

• ⁨Comment⁩ on ⁨Who the fuck needs an x axis anyway⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  There is an 𝑥 axis and it’s not too hard to comprehend, although I’d prefer the dividing character to be newline rather than “|”, or only show the latter date.

• ⁨Comment⁩ on ⁨Experts disagree⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Wait until you hear about his other famous book

• ⁨Comment⁩ on ⁨Dinner is ready! ⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Wurst, kiełbasa, pierogi, bagels, vepřo-knedlo-zelo, svíčková, chlebíčky and of course it’s the only region to combine wine, beer and vodka.

• ⁨Comment⁩ on ⁨Why can't countries with vast deserts make solar farms to power the world?⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Panels are effectively part of the earth. It’s one closed system.

  You do have a point: a black body radiates more heat than a high-albedo one so at night, the panels can cool down below ambient temperature. Overall, low albedo (reflectivity) and small thermal mass causes higher temperature differences between day and night – and it’s daytime when people want cooler temperatures.

  But yes, any shade will help people living below solar panels feel cooler on sunny days, which is why I advocate for building a solar roof over just about every parking lot.

• ⁨Comment⁩ on ⁨Why can't countries with vast deserts make solar farms to power the world?⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  They’re black, duh. Yes, some 20% of incoming energy becomes electricity but the rest gets turned into heat. A reflective (white) material heats up way less.