BC TECH
Saved by @CodyyyGardner

does bubble memory count as solid state?
I guess? I mean, it has no moving parts. but it requires preheating and involves movement of magnetic fields across a surface...

 it's kinda like a traditional hard drive where you don't spin the disc, you just trick all the bits to migrate off the edge
who called it "bubble memory" and not "lemming bits"
(obligatory "lemmings don't throw themselves off cliffs, that's an urban legend")
(obligatory "the idea that disney invented that urban legend it itself an urban legend, they just helped popularize it")
@quartizine has the good point that it's not just about movement. Vacuum tubes aren't solid state!
https://t.co/VG3XdoQ6OZ
in any case, that still probably means bubble memory is solid state.
It has to warm up, yes, but it doesn't melt. The crystal remains solid, and only the magnetic fields move.
interesting this sort of solid-vs-gaseous/liquid distinction means that for optical discs (which aren't normally solid state, because they spin) could conceivably be made solid state... EXCEPT for CD-R/CD-RWs when you're burning them.
because CD-Rs involve a (very brief) one-way state transition from solid->gas->solid, and similarly CD-RWs are solid->liquid->solid every time you write them.
and by "could be made solid state", there's no actual reason WHY a CD-ROM has to spin. It just means you don't need as complicated a laser arrangement
because if you think about how an optical disc works, it's really a 2D surface: you've got the in/out axis (towards the spindle hole or towards the edge) and the around-the-disc axis
and the laser head in your CD-ROM drive has a stepper motor or voice coil that's used to move the laser on the in/out axis.
The other axis is managed by spinning the disc, and waiting for it to rotate around.
but you could totally build a CD-ROM drive that works more like a plotter or 3D printer: you could move the head in two dimensions, and not have to spin the disc.
why would you do this?

there's really not any reason.
although the Lasercard format works this way.
https://t.co/JlCPyOXXzL
I've not opened up my lasercard drive (I was kinda hoping to find some media for it...) but I think it doesn't fully move the head. it's mostly a moving-mirror system.
although that brings up another point worth arguing about for a medium:
does it count as solid state if doesn't move while in use, but it's connected to things that do?
although if you want to get relativity-absurdist with that, you could then argue that, because there are no special reference frames, that technically traditional hard drives don't spin.
they're immobile, and the universe spins around them?
although now t hat I'm thinking about it I'm not sure rotating reference frames count as "normal", because you can feel forces from the rotation that wouldn't be the same if it was the rest of the universe spinning around you
it's too 6am for this physics bullshit
ANYWAY I think the point out vacuum tubes made me realize something:

solid state discs aren't "solid state" because they're not moving. not moving has nothing to do with if they're solid state or not
solid state disks are solid state because they use solid state electronics, and traditional spinning-rust media does not.
"solid state electronics", as a term, was coined to distinguish semiconductor electronics from vacuum tube electronics.
vacuum tubes use a (near) vacuum and a gas of particles/electrons/ions moving within it.
whereas solid state electronics use a semiconductor, which is a solid crystal. It's just currents being controlled by currents within the solid piece of silicon or germanium or whatever.
so "solid state" refers to things like transistors and diodes and integrated circuits.
and what are SSDs made out of?
integrated circuits. all the flash memory stuff happens inside a die of silicon.
whereas traditional discs are a bit circle of rust spinning around with magnetic fields on it, with a little electromagnet on an arm that moves around it to read off or write magnetic domains
which is a lot of things, but it's not transistors, diodes, or integrated circuits. So it's not "solid state" in the same way an orange isn't solid state: it's not made of remotely the same things.
so I think the answer to "is bubble memory solid state?" is both "yes" and "no".
it's "yes" in the sense of: the state of the memory storage medium is solid, and is always solid. at no point is it liquid or gas.
it's "no" in the sense of: when we say "solid state", we mean "solid state electronics", which it isn't.
It's a chunk of garnet, not anything semiconductory
btw, this also means that core memory isn't solid state either, since it's similarly electromagnety, even though nothing is moving.
so I'd argue that you could say it's something like "solid phase memory" but "solid state" has a pre-determined meaning in electronics and applying it to things that aren't made of "solid state electronics" is confusing and incorrect.
ANYWAY this reminds me of something I was talking to @gewt about the other day:
I want to make a rotating solid state disk.
the obvious way to do this is slip rings. I did a whole thread on these:
https://t.co/aVU1sri57P
but I think SATA might be too fragile and complicated to easily put through a slip ring, so I think I'm gonna go for USB.
basically take an SSD, a SATA2USB adapter, and then get a USB slip ring (I think Moog (not that one) sells off-the-shelf ones!) and a motor.
you see?

More from foone

foone
foone
@Foone
An interesting set of games that I've been vaguely interested in since I was a kid, after seeing one at a friend's house and never being able to find it again, was the BATTLES IN A DISTANT DESERT/BATTLES ON DISTANT PLANETS series.


These are turn-based wargames for windows 3.x, sharing the same engine.
Battles in a Distant Desert is from 1992, and is based on the first Iraq war (Desert Storm)


and Battles on Distant Planets is from 1991, and takes place in SPACE!
I'm pretty sure this is the one I played as a kid.


They've got 3 options to play with:
* Player vs. Player
* Player vs. Computer
* Computer vs. Computer

So it's a 0-2 player game!


They also did a DOS strategy game called "STARDATE 2140.2: GALACTIC CONQUEST" in 1990, but it seems to be lost.
All the games share an experimental AI system based on neural networks.
FUN
foone
foone
@Foone
Check out what I got today. You can tell it's something weird as fuck just from the box...


So this is a FISK ... thing.
It's a floppy disk fax machine! You can fax floppies to other people who have these things.


Apparently you can connect it to external drives, computers, or printers?


So I'm gonna do more research into this thing and how it works, but while I'm here, some of the other stuff I got today. Some 3.5" floppy disks. Single sided, double density ones! These were some of the very first 3.5" disks and basically nothing used them.


I also got this book: AutoSim, the Marketing Laboratory.
It's some software to help you sell cars, apparently! it was weird and cheap, so I got it. I'll of course image it.
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foone
foone
@Foone
I went looking for a remote-controlled power switch (the wireless christmas kind, not the modern IoT kind) and didn't find it, but I did find this thing I bought just to figure out why it exists.
It's a timer outlet, but you program it from your phone... but it's not wireless.


Yeah instead it plugs into your phone's HEADPHONE PORT


I got it on sale.
probably because iphone dropped the headphone port and they had to get with the 21st century and make it bluetooth


So inside the box is the device. it's got a little 2-prong polarized outlet with no ground.


on top is the only controls: on/off/timer.
TECH
foone
foone
@Foone
I didn't have a picture handy to post today for my sleep-picture, so here's an old picture of when we brought in our recliner and Babby SCSI thought it was a fun new toy to climb on


she also liked to get in the way of keyboard repair process


her favorite youtuber was @TheCaptainSauce


and sometimes she'd just hang out near the keyboard and be like "why are you reading wikipedia and not PETTING ME?"


sometimes she was unaware that an evil wizard was sneaking up on her
FUN
foone
foone
@Foone
Everyone likes to forget this episode just because it's terrible, but we were really sleeping on inherent comedy in a unfreezing an investor 300 years in the future and having them discover we've transitioned to a moneyless post-scarcity utopia.


it's like a classic twilight zone episode.

in fact, it IS a twilight zone episode.
The Rip Van Winkle Caper, Season 2, episode 24.
Four criminals steal a million dollars of gold bars, then put themselves in suspended animation for a hundred years to hide from the law.

they wake up, then start killing each other from mistrust, then the last one dies in the desert, as he offers a gold bar to the driver of a passing car, asking for water and a ride into town

the confused driver walks back to his car with the bar, and his wife asks what the gold bar is.
he says something like "It's gold... they used to use this for money, before we figured out a way to manufacture it."
He tosses it away, and drives off.
CULTURE

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foone
foone
@Foone
you know how Atari called the Jaguar as a "64bit system", because it had two 32bit CPUs? (or because it had a 64bit bus, but let's not worry about that)
we should apply that logic to the current generation of consoles.
So the Switch is a 256bit console. It's the Nintendo 256.

The Xbox Series X? terrible name.
Better call it the "Xbox 512 Blu-ray".
like the Jaguar CD, the Sega CD... the good old days when consoles had their media type in the name.

Boringly the PS5 is also a Playstation 512 Blu-ray, because both of them are using the same AMD Zen 2 CPU.

The Switch one is weeeird. It's built on an Nvidia Tegra X1, which is an 8 core 64-bit CPU, so that should be 512, right?

Well... no. Four of them can't be used. And later documentation doesn't even mention them.

it's some weird system where the system-on-a-chip has four Cortex-A57 cores and four Cortex-A53 cores but only the A57s are usable?
TECH
getify
getify
@getify
Java was first released in mid-1995, just 6 months before JS.

By 98, when I went to college, Java was already used for all the first level courses in the CS program.

How did it catch on so quickly (just 3 years) to shift university curriculum, which is usually so slow/behind?

I wonder why Java was so respected and JS was not? Why/how was Java already seen as such a stable and mature language?

Not just Java, other languages (like python) were also released around/near 95, and also seemed to get to "mature" respect status. much quicker.

I bring all this up because my impression of Java in 98 was that it had been around "forever" (as had C++ first developed in 79, but not standardized until 98!), but that's not. true at all. These were all new languages around the same time.

I'm sure the language designs had different merits, and the target applications meant a different perception and reception, but...

it sure seems like the industry (and academics) just decided Java and C++ were the stable mature ones and langs like JS were toys.

BTW, before you assume JS was nascent/immature b/c the web wasn't much of a thing yet, remember that JS was actually released as LiveScript on the server before it was released in a browser. So "server-side JS" was always part of the story, not just Node 15 years later in 2009.
TECH
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Paul Stamatiou \U0001f4f7
Paul Stamatiou 📷...
@Stammy
Just published 15,000+ words on security keys. 🔐📱💻

With SIM attacks at their highest, now is a great time to take a closer look at your online security.

Removing SMS from your two-factor auth is a start, but authenticator apps have downsides too...

https://t.co/Dk0MPJHL2V


Just look at these headlines from recent SIM swap and port attacks.

It's all too established for attackers to find ways to socially engineer control of your phone number and start gaining control of your accounts.

I first talk about some general security tips.


Unfortunately not all websites let you remove your phone number from accounts.

You may consider migrating your phone carrier to @googlefi , which requires email account access to do anything (and can be locked down with security keys and even Advanced Protection)


Beyond SMS, I talk about issues that TOTP authenticator apps (the code generators) have as a form of two-factor auth. They're so, so much better than relying on SMS for your second factor but they still have issues like utilizing shared secrets and lacking phishing prevention.

Enter security keys!

Utilizing public key cryptography they don't have any shared secret between the client and the server. They prevent phishing by taking the website domain into account.

Even if you get tricked by a clone phishing website, your key won't.
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Lea Kissner
Lea Kissner
@LeaKissner
Next up in Privacy Technology at #enigma2021, Kelly Huang from @ethyca speaking about "GONE, BUT NOT "FORGOTTEN"—TECHNICAL & PRACTICAL CHALLENGES IN OPERATIONALIZING MODERN PRIVACY

Just imagine there's a global pandemic forcing everyone to stay home and buy their stuff over the internet. And you've been working on your sanitization-on-demand startup. You've got more users than you can count! ... literally, because your data's all over.

Now you're a multi-national international country with privacy issues because your information is all over the place.

Now a user writes to request you delete their data. Where is it? How do you do that? Who's responsible for privacy in your business.

How do you operationalize privacy rights?

Primary stakeholders:
* Legal
* Business
* Engineering

We spend a lot of time on Twitter analyzing the legal rulings, but it's harder where the "rubber meets the code" 🥁
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Stian H\xe5klev \U000100cf intertwingling Roam graphs
Stian Håklev 𐃏 intertw...
@houshuang
For people curious about the Roam API and confused by the syntax, or interested in why Conor went with Datomic/Datascript and not a traditional database, this older talk by Roam developer @mark_bastian is a great overview.

He gives great examples using Spiderman of how even modeling something fairly trivial in SQL is much more complex than in Datomic. But the real kicker is when you're trying to interrogate the data to find recursive relationships.


Right now the Roam data model (at least that's exposed to developers) is just about pages, blocks, and children with tags. Already you can see how finding the page containing a block with a certain tag etc is useful.https://t.co/jWJnuKu1RG


But imagine when attribute relationships are fully represented

You should be able to model the entire Spiderman story in Roam.
Page title: Peter Parker
Child of:: [[Richard Parker]] [[Mary Parker]]
Aliases:: [[Spidey]]

etc, and do these kind of queries.

"Show me quotes about operational efficiency in books by authors who used to be in the military"
"Show me companies in Boise, Idaho, founded by women, whose evaluation is lower than 10X ARR"
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So, on the subject of bonkers hyperbolic pretzeling over the Bell judgement, Grace 'destroy books I don't like & make inappropriate jokes about sterilising teenage girls' Lavery has some thoughts.

Tell me why my feminism is wrong Grace.

Oh

Well, if anyone thought the Bell judgment was going to make TRAs reconsider making massively overblown claims with no evidence backed up with nothing but a thick wadge of emotional blackmail.... HAHAHA, no one thought that.


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Vibhu Vashisth
@VIBHU_Tweet
🌺कैसे बने गरुड़ भगवान विष्णु के वाहन और क्यों दो भागों में फटी होती है नागों की जिह्वा🌺

महर्षि कश्यप की तेरह पत्नियां थीं।लेकिन विनता व कद्रु नामक अपनी दो पत्नियों से उन्हे विशेष लगाव था।एक दिन महर्षि आनन्दभाव में बैठे थे कि तभी वे दोनों उनके समीप आकर उनके पैर दबाने लगी।


प्रसन्न होकर महर्षि कश्यप बोले,"मुझे तुम दोनों से विशेष लगाव है, इसलिए यदि तुम्हारी कोई विशेष इच्छा हो तो मुझे बताओ। मैं उसे अवश्य पूरा करूंगा ।"

कद्रू बोली,"स्वामी! मेरी इच्छा है कि मैं हज़ार पुत्रों की मां बनूंगी।"
विनता बोली,"स्वामी! मुझे केवल एक पुत्र की मां बनना है जो इतना बलवान हो की कद्रू के हज़ार पुत्रों पर भारी पड़े।"
महर्षि बोले,"शीघ्र ही मैं यज्ञ करूंगा और यज्ञ के उपरांत तुम दोनो की इच्छाएं अवश्य पूर्ण होंगी"।


महर्षि ने यज्ञ किया,विनता व कद्रू को आशीर्वाद देकर तपस्या करने चले गए। कुछ काल पश्चात कद्रू ने हज़ार अंडों से काले सर्पों को जन्म दिया व विनता ने एक अंडे से तेजस्वी बालक को जन्म दिया जिसका नाम गरूड़ रखा।जैसे जैसे समय बीता गरुड़ बलवान होता गया और कद्रू के पुत्रों पर भारी पड़ने लगा


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विनता बोली,"सफेद रंग का"।
तो कद्रू बोली,"शर्त लगाती हो? इसकी पूँछ तो काली है"।
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Anu Satheesh \U0001f1ee\U0001f1f3
Anu Satheesh 🇮🇳...
@AnuSatheesh5
Mangottu Bhagavathi Temple
#Palakkad #Kerala
#keralatemples 🚩

Mangottu Bhagavathi Temple is situated in Athipotta near Alathur of palakkad district. Devi is kshipraprasadi here and grants relief to those who worship with full faith.
Mookken Chathen, situated on the Northern 👇


side of the temple, is guarding Devi here.
Story says that, once there lived a weaver named Kuttan who was a Devi Bhaktan. During one festival time Kuttan was so pleased by the Devi Vigraham that he requested her to come along with him. At that time wind blew heavily and Cloths


in Vigraham flew. Kuttan immediately decorated Devi with his cloth which stuck to Vigraham and returned to his village and with his Umbrella. Devi came with him in that Umbrella and stayed in his place. This place is Mangottu Bhagavathi temple now.

Amme Narayana
🙏🕉🙏
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