unicoletFeb 10
From: =?iso-8859-10?Q?=e6strid?=

A - DNS Record
AA - Battery
AAA - Battery
AAAA - DNS Record

edit: originally by @kevin , inadvertently copied https://mastodon.km6g.us/@kevin/113724524588964200

Kevin P. Fleming (@[email protected])

A - DNS record AA - battery AAA - battery AAAA - DNS record #DNS #Battery #Confusion

KM6G Mastodon
Feb 10 at 1:46amWeb
Show threadFrom: =?iso-8859-10?Q?=e6strid?=Feb 10
1, i've muted this
2, replying with "☝️Actually, —" is likely to earn a block
Show threadchazFeb 10
@astrid This truck can help me with that, right?
Show threadAlice Feb 10
@astrid AAAAA - me reading this
Show threadTabbyFeb 10
@astrid I’m so sorry, A and AAAA are both in current usage.
Show threadFrom: =?iso-8859-10?Q?=e6strid?=Feb 10
@0x09 where is A
Show threadDavid Chisnall (*Now with 50% more sarcasm!*)Feb 10

@0x09 @astrid

That is the worst pun in the thread, I applaud you.

Show threadGender David CopperfieldFeb 10
@astrid to further complicate things AAAA is also a battery
Show threadthe vessel of morgannaFeb 10
@astrid i promise this isn't loss
Show threadRexx Deane 🏳️‍🌈Feb 10
@astrid
It can't be DNS.
There's no way it's DNS.
It was the batteries.
Show threadkwayk42Feb 10

@astrid AAAA - Also a battery

9V batteries contain 6 AAAA batteries

Show threadSheldonFeb 10

@kwayk42 that little factoid about 9V batteries (usually) being nothing more than six AAAA batteries in a trench coat will never not be mind blowing to me.

@astrid

Show threadFrom: =?iso-8859-10?Q?=e6strid?=Feb 10
@sysop408 @kwayk42 yea ... not always
Show threadPxl PhileFeb 10
@astrid @sysop408 @kwayk42 uh...oh wow. TIL
Show threadSheldonFeb 10

@astrid is there any easy way to tell which ones are or aren't without ripping apart a 9V battery?

I actually didn't even know AAAA batteries existed before I learned about this. I found an old 9V and tore into it as soon as I read about it and that one was indeed made from 6 AAAA batteries.

@kwayk42

Show threadSpeaktrapFeb 10
@sysop408 @astrid @kwayk42 I learnt it when looking for batteries for MS Surface Pen. I searched throu all these stores until...
Show threadJörn NettingsmeierFeb 10
@astrid @sysop408 @kwayk42 More like, never?
Show threadSheldonFeb 10

@nettings I've taken one apart and I've seen it myself.

https://www.rfcafe.com/references/electrical/aaaa-cells-inside-a-9volt-battery.htm

@astrid @kwayk42

Inside a 9-Volt Battery

Here is what you will find inside a standard 9V battery... 6 AAAA wired in series!

Show threadJörn NettingsmeierFeb 10
@sysop408 @astrid @kwayk42 oh wow, TIL...
but seriously, packing cylinders like that should be illegal. This is basically maximising the amount of air you can sell to a customer.
Show threadSheldonFeb 10

@nettings it's packed really tightly in there. The question I have is how it even makes sense economically to do that.

@astrid @kwayk42

Show threadMatthew MillerFeb 10

@sysop408 @kwayk42

Huh. So 9V batteries are _actually_ batteries!

Show threadSheldonFeb 10

@mattdm yeah that brings up so many questions. So few things use AAAA batteries that most people don't even know they exist.

On the other hand, 9V batteries aren't at all uncommon yet manufacturers will often make 6 AAAA batteries first and then use those to make a single 9V? Wouldn't it be more efficient to make the 9V directly and make fewer AAAA's?

This has been bugging me ever since I learned this.

@kwayk42

Show threadMatthew MillerFeb 10

@sysop408 @kwayk42

Apparently this: https://onlinelibrary.wiley.com/doi/10.1002/9781119163824.ch1

(Says a PBS article I found.)

Show threadSheldonFeb 10

@mattdm I'm not sure what I was supposed to be seeing in that article. Would it make more sense if I had a subscription to read the full article?

@kwayk42

Show threadMatthew MillerFeb 10

@sysop408 @kwayk42

tl;dr The manufacturing process for making layers of things in rolls was already well-established for other things. Now even more so, so there's not any real incentive to retool for something else.

Show threadLeelooFeb 10
@sysop408 @mattdm @kwayk42
The chemistry gives 1.5 volts. To make 9 volts, you need six cells in series anyway, though you could use other methods to separate them.
Show threadSheldonFeb 10

@leeloo ah! OK, now I've got the opposite question. If they're doing it like this because of the chemistry, how do the ones that don't use 6 AAAA batteries do it? Are they just making 6 flat cells packed into a rectangle instead of cylinders?

@mattdm @kwayk42

Show threadLeelooFeb 10

@sysop408 @mattdm @kwayk42
Interesting question, the people who have taken those apart would know.

I'm pretty sure lead acid car batteries put plastic walls between the cells (that chemistry gives 2 volts, so also needs six cells for the 12 volts).

Show threadZack WeinbergFeb 10
@leeloo @sysop408 @mattdm @kwayk42 yeah, six flat cells. in another branch of the thread someone posted a photo: https://infosec.exchange/@astrid/116045181097859309
From: =?iso-8859-10?Q?=e6strid?= (@[email protected])

Attached: 1 image @[email protected] @[email protected] yea ... not always

Infosec Exchange
Show threadLeelooFeb 10
@zwol @sysop408 @mattdm @kwayk42
Oh. I saw the photo, but didn't realise the stripes were cells
Show threadSheldonFeb 10
@leeloo that went over my head too.
Show threadZack WeinbergFeb 10
@sysop408 @leeloo it's six little plastic tubs glued together. A long time ago I cut one of those open myself, saw the same thing, was confused, and looked up the patent number on the outside of the case
Show threadAnders LagerfjärdFeb 10
@kwayk42 @astrid A is of course a battery size too, albeit a more uncommon one. Any joke involving DNS is still funny!
Show threadSheldonFeb 10

@jalager OK, I had no idea the single A battery was a thing.

Also, it's really funny that this battery is apparently so uncommon that they didn't have an actual photo to use on the Wikipedia page for battery sizes so they just drew a 2D representation of it on a piece of graph paper.

https://en.wikipedia.org/wiki/List_of_battery_sizes#/media/File:A-concept.jpg

@kwayk42 @astrid

List of battery sizes - Wikipedia

Show threadDavid Chisnall (*Now with 50% more sarcasm!*)Feb 10

@sysop408 @jalager @kwayk42 @astrid

I used to have a flashlight that took 4.5V batteries that were actually three A cells in a bigger box. Unlike the 9V ones, which are quite hard to dismantle, these had a top that was very easy to pop off and so you could see the wiring inside.

I've never seen an A cell anywhere outside of these ones, but when I was young you could buy the 4.5V ones in most hardware stores. I haven't looked for one for a very long time, so I've no idea if that's a good thing.

Show threadAnders LagerfjärdFeb 10
@sysop408 @kwayk42 @astrid Indeed! I THINK I remember them being around in Sweden in the 80s or 90s but I can't swear on it. I'm sure I haven't seen one in decades though.
Show threadcλémentdFeb 10
@astrid Conspicuous lack of andouillette
Show threadNavi  Feb 10
@astrid But, both A and AAAA are also battery sizes. https://en.wikipedia.org/wiki/List_of_battery_sizes
List of battery sizes - Wikipedia

Show threadTammi 𝆮 𓃠Feb 10
@navi @astrid you can store a lot of energy in those boobs huh
Show thread🔻 aetios 🇪🇺Feb 10
@astrid and battery
Show threadSiliwanFeb 10
@astrid doubles as a reaction for encountering issues with both batteries and DNS records
Show threadMC Chord Toll 🐀Feb 10
@astrid AAAAA - me when I have to change a battery or update a DNS record
Show threadGyroplastFeb 10

@astrid

AAAAAA Shady Locksmith Co.

at the top of the yellow pages in the 90s.

Show threadMatthieu LemerreFeb 10

@astrid AAAAA - Andouillette

https://en.wikipedia.org/wiki/Andouillette

Andouillette - Wikipedia

Show threadFrom: =?iso-8859-10?Q?=e6strid?=Feb 11
@MatthieuLemerre i dont get it
Show threadMatthieu LemerreFeb 11
@astrid "The most famous ones come from Troyes, Lyon, Cambrai and Chablis and are graded using the AAAAA (5 As) grading system." The best andouillettes are AAAAA, this expands on your joke
Show thread Kura  :kura_explode:Feb 10
@astrid
AAAAA - Falling down a cliff
Show threadBonkersFeb 10
@astrid also, a monotonous song
Show threadvriesk (Jan Srz)Feb 10
@astrid Aaaaaaaaaalmost new Tesla Cybertruck for sale!!!! now quick
Show thread🥀Feb 10
@astrid
Show threadProf. Rachel Thorn 🍉🇺🇦🏳️‍⚧️🏳️Feb 10
@astrid
AAAAA - Edvard Munch
Show thread⁂ Fish Id WardrobeFeb 10
@astrid @scream
Show threadEndless ScreamingFeb 10
@fishidwardrobe AAAAAAAAAAAAAAAAAAHHHHHHHHHHHH
Show threadSzymon Sokół 🇵🇱🇪🇺🇺🇦Feb 10
@astrid ♥
A version I heard years ago:
AA - Anonymous Alcoholics
AAA - American Automobile Association
AAAAA - an organization for those who drive while drunk
Show threadBruno GirinFeb 10
@blotosmetek @astrid
AAAAA - Association amicale des amateurs d'andouillette authentique: https://fr.wikipedia.org/wiki/Association_amicale_des_amateurs_d%27andouillette_authentique
Association amicale des amateurs d'andouillette authentique — Wikipédia

Show threadKing Naga Calyo Lucere-DelphiFeb 10
@astrid AAAA is also a battery! Very uncommon but you can still get some if you know where to look for em! 9V batteries sometimes have six cells slightly smaller than AAAA inside of them, too.
Show threadTiko (alt of Startide)Feb 10
@astrid @dragonarchitect I just had to look up what all uses AAAA batteries and found out Amazon sells them and they're commonly used in tablet styluses from what I can tell from the reviews
Show threadEli the BeardedFeb 10

@astrid @dragonarchitect @Startide

Old school pen lights, too. You get a good pen sized feel with these, while AAA (and AA) are too big

Show threadEli the BeardedFeb 10

@dragonarchitect

And "A" was a battery size, big honker used in tube radios.

https://www.radiomuseum.org/r/eveready_radio_a_battery_742.html

Radio A Battery 742 Power-S Eveready Ever Ready, AENMC / National |Radiomuseum.org

Radio A Battery 742 Power-S Eveready Ever Ready, AENMC / National Carbon, build 1942, 5 pictures, United States of America , schematics, tubes, semiconductors