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Did you know it's possible for two lines to appear to diverge in a 2D perspective view, but actually converge in 3D? Kind of the opposite of parallel lines in 3D converging in 2D.
I discovered this while trying to implement a clipping algorithm. At first I didn't believe it was possible, it felt so foreign to everyday experience. It actually happens whenever two lines converge behind the center of projection, but we rarely see that IRL.
(Image rendered from pov of came…

What appears to be a trapezoid, with the narrower base as a horizontal line near the center, getting wider towards the top, until it's cut off by the top edge of the image (forming the wider base).
3D orbit showing what's really going on: the 'narrower base' of the trapezoid was one side of a triangle, and the other two sides get closer together moving away from it, not farther apart.
@robpike@hachyderm.io
2026-01-07 11:38:52

Two screenshots of the lock screen on my iPhone 17 Pro whose difference confounds me. In one the contrast is good and I can read the numbers on the pad, but the time and battery status are hidden. In the other, the key pad is pretty much invisible but I can see the time and battery. I have no idea how to trigger the contrastier one; it just sometimes does this.
Is this phenomenon known? Explicable? It's as if the new UI is sometimes ashamed to show how unreadable it is and compensates before hiding again.
Somebody made this happen. Any idea why?

@thomasfuchs@hachyderm.io
2026-02-05 14:40:59

Because I constantly hear myths about the good old compact cassette here's a longer post dispelling them:
1. They can sound as good as CDs
2. They don't wear out
3. You can't use a pencil to wind them
4. You can go to specific tracks automatically
5. You don't need to carry around extra batteries
I will elaborate below:
1. Sound Quality
Many higher-end decks can record cassettes on metal tape with various Dolby noise reduction settings; especially the combination of metal tape and Dolby S will make tapes that are pretty much indistinguishable from listening to a CD.
Even normal or chrome tape with Dolby B (around since the 1970s) will give great results; likely indistinguishable from a CD when played in a car or while out and about with a personal player.
Some extremely high-end tape decks produce better than CD results in some regards (for example some Nakamichi models go to 26KHz with frequency response, while CD are inherently limited to top out at 22KHz).
It's true that the dynamic range of CDs is much better than either vinyl records or tapes. However, unless you're super into classical music there's likely not much music for which this truly matters, as 99% is mastered to use much less dynamic range than provided by any audio media format. (If you're super into classical music you probably want SACD or other high-res lossless sources anyway, not CDs.)
2. Yes, it will wear out mechanically but you will wear out mechanically before it does. Please watch VWestlife's video: youtube.com/watch?v=_dgJ4hRHBiw
3. European and American pencils are too thin to engage the cassette reel cogs. (You'd need to get a Japanese pencil. People mostly used BIC pens for this purpose which have the right thickness.)
4. Most (nice) decks and personal players from the early-to-mid nineties onwards have track skip features (e.g. Sony has AMS, Automatic Music Sensor), which allow precise winding to a specific track.
Some decks even did this in the early 80s!
5. My late-90s Walkman has seventy-eight (78) hours of playback on one (1) single AA battery.
Anyway, the main reason why I like them is they're fun to use and recording them is very deliberate instead of algorithms selecting music for me. :)

Relative to many, my life is very good,
-- in that I am alive and housed, fed, sometimes employed.
I am healthy and loved.
Still, I am about to lose my entire mind over the Free Application for Federal Student Aid (FAFSA) website,
and the fact that someone,
probably a bot farmer,
has already used my 16-year-old son’s identity to establish a fraudulent account.
This is a common scam,
one that was fortunately detected before any money changed …

@rasterweb@mastodon.social
2026-02-06 17:29:09

Bandcamp I love you but damn you make it difficult. I added stuff to my cart, but went to another device to check out and... I can't find the cart on the mobile app. Where is it!?
Went to a computer and got to the cart and... it's empty. None of the stuff I added is there. Re-add it all and check out.
I've tried multiple times to check out, the all fail. I mean, maybe so many of you are making purchases the system is overloaded? Argh.

Error screen shot.
@Techmeme@techhub.social
2026-02-06 23:25:56

Trump Mobile execs showcase the T1 Phone's new design and specs, and say the phones go through "final assembly" in Miami and full assembly in the US is a "goal" (Dominic Preston/The Verge)
theverge.com/gadgets/875190/tr

@leftsidestory@mstdn.social
2026-02-07 00:30:03

Different Corners VII ▶️
不同的角落 VII ▶️
📷 Nikon F4E
🎞️ Fujifilm NEOPAN SS, expired 1993
#filmphotography #Photography #blackandwhite

NEOPAN SS 100 (FF)

Image 4 — English Alt Text
A black‑and‑white overhead view of a street scene. In the foreground is a decorative street lamp with several spherical lights and a tulip‑shaped light at the top. Below, multiple people ride scooters along the road, while others walk or stand nearby. Lane markings and directional arrows are visible on the pavement. On the sidewalk, a large billboard displays a car advertisement, though the text is not readable. The image captures everyday urban mo…
NEOPAN SS 100 (FF)

Image 1 — English Alt Text
A black‑and‑white photo of a small raised platform made of metal, with railings and two staircases leading up from opposite sides. A tall vertical pole stands at the center of the platform. Behind it are large trees with long, drooping branches. To the right, a circular road sign displays a weight limit of “15t.” A person in a light‑colored coat stands near the sign. The scene appears outdoors, with a contrast between the industrial structure and t…
NEOPAN SS 100 (FF)

Image 2 — English Alt Text
A black‑and‑white photograph showing a modern cylindrical building covered in reflective glass panels. At the top is a circular metal framework. Behind it stands a rectangular building with many windows and several air‑conditioning units attached to the exterior. The left side of the image is partially obscured by a dark vertical shadow or object. The composition emphasizes contrasting architectural shapes.
Image 2 — 中文替代文字
一张黑白照片,主体是一座圆柱形的现代建筑,外墙由…
NEOPAN SS 100 (FF)

Image 3 — English Alt Text
A black‑and‑white photo of a multi‑story brick and concrete building showing visible wear and partial disrepair. Some sections of the facade are missing or damaged, exposing bricks and unfinished surfaces. Several windows lack glass panes or frames. In front of the building stands a decorative street lamp with multiple globe‑shaped lights. The image conveys an urban environment with signs of aging architecture.
Image 3 — 中文替代文字
一张黑白照片,画面是一栋多层砖混建筑,外…
@davidaugust@mastodon.online
2026-01-07 17:29:15

On the occasion of ice’s latest killing: Local police MUST engage, detain and arrest ice. There is no better option.
Here’s why in detail: stuff.davidaugust.com/local-la

@toxi@mastodon.thi.ng
2026-01-06 16:53:24

Welcome to #TextModeTuesday! For the next few weeks I'll be posting some projects & experiments related to this just spontaneously made up hashtag. If you've got something related to interesting text-based art/experiments, patterns, ASCII-art, ANSI-art etc. please share — the more, the merrier...
To start with, here's an experiment from a few years ago to demonstrat…

Screenrecording of the linked demo, showing a rotating infinite 3D grid of colorful cube-like structures with smooth intersections. Every few seconds the animation cycles between different character sets used to represent the rendered frames as text.
@andres4ny@social.ridetrans.it
2026-01-06 22:14:13

Chuck Schumer remains the worst of the Democratic Party. Beholden to special interests, refusing to retire despite relying on a political playbook from former generations, and doing his best to knee-cap progressives while hoping for "bipartisanship" from Rs.
Remember when Schumer endorsed Mamdani? Yeah, neither do I, because he fucking didn't. Even Jeffries (waiting until less than 2 weeks before the election) finally endorsed the D Mayoral candidate. Not Schumer, tho!