Author Topic: Stock Electronic Image FAILS  (Read 228291 times)

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Offline AndyBeez

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Re: Stock Electronic Image FAILS
« Reply #925 on: July 08, 2023, 12:08:30 pm »
I'm sticking with my daily infusion of D20 - Thanks to nuclear physics, it crams more beer into a pint glass. Okay, it ends up as C5D4N4O3 (trans-urinic-acid), but beer is just on rental. At least one can p!ss!st in the dark.





 

Online Nominal Animal

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Re: Stock Electronic Image FAILS
« Reply #926 on: July 08, 2023, 07:36:14 pm »
If only you realized how goddamn toxic uranium is.

You need to ignore all talk about radiation with uranium.  The biotoxicity due to chemistry is so high, that the LD50 dose of 238U due to heavy metal chemistry is less than half the LD50 due to radiation.  Simply put, the thing that kills you when ingesting any natural uranium is not radiation, but its chemical toxicity as a heavy metal; so much so that the symptoms you get (unless you get a huge dose, tens or hundreds of times the half-the-time-deadly-dose or LD50) are because of heavy metal poisoning and nothing to do with radiation.  For radioactive uranium, it depends on the form in which it gets ingested.

Uranyl ions (UO22+) also have 10× the biosolubility of e.g. uranium dust; only half a percent of uranium is absorbed when ingested (except in lungs), but about 5% of uranyl ions are absorbed.  It accumulates in your bones, and causes all sorts of internal organ and brain damage, even in quite low doses (compare to the effects of ingesting e.g. mercury and lead).

The most ridiculous thing I've ever heard about uranium is how "depleted uranium shells" are "safe".

When a depleted uranium round hits a target like heavy armor, a lot of it vaporizes and forms uranium dust, and surprise surprise, uranyl ions.
The only way you can make it even more dangerous is have those uranyl ions form uranyl salts.  And of course, uranyl in aqueous solution is a weak acid, so when that dust settles down in any kind of puddle in the ground, guess what you get.

All this has been known at least since the 1960s, so anyone who tries to tell you how depleted uranium rounds are safe, are bullshitting you.
The "but there is no more radiation, it's depleted!" is just a sleight-of-hand, like telling you how bullets have never killed anyone, because you cannot throw one fast enough to hurt anyone.

Yes, this also means that anyone using depleted uranium rounds is actually committing a worse offense than those using biological weapons: at least biological weapons tend to break down after some time.  Uranyl salts stay on the ground surface and eventually end up in animals and humans.  This, too, has been known since 1980s at least.
 

Offline AndyBeez

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Re: Stock Electronic Image FAILS
« Reply #927 on: July 08, 2023, 08:10:27 pm »
If only you realized how goddamn toxic uranium is.
...[etc]...
This, too, has been known since 1980s at least.

DU et.al. > https://en.wikipedia.org/wiki/Gulf_War_syndrome
 

Online Nominal Animal

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Re: Stock Electronic Image FAILS
« Reply #928 on: July 08, 2023, 09:32:07 pm »
If only you realized how goddamn toxic uranium is.
...[etc]...
This, too, has been known since 1980s at least.
DU et.al. > https://en.wikipedia.org/wiki/Gulf_War_syndrome
And that's just the US soldiers; the birth defects and brain damage (including irrationality and violent tendencies) will plague the locals for generations to come.

We humans do this error over and over again.  Consider thalidomide, which is an excellent drug for treating plasma cell cancers and acute inflammation of subcutaneous fat tissues still today; you just need to keep it away from anyone pregnant or intending to conceive (males and females).  Similarly, uranium itself is very useful in many cases, and uranyl salts are very useful in e.g. DNA analysis, so it isn't evil or bad, just dangerous in certain forms and use cases.

If we manage to cause our own extinction, it will not be through hot war; it will be by ignoring multi-generational effects of things we do.  Perhaps some drug, that causes utter infertility in the second or third generation.  This, too, is so well known that there is a whole sci-fi genre centered around it.  One I really like is a Draco Tavern sci-fi short story, "Ssoroghod's People", by Larry Niven.
 

Offline T3sl4co1l

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Re: Stock Electronic Image FAILS
« Reply #929 on: July 09, 2023, 12:08:32 am »
Yes, this also means that anyone using depleted uranium rounds is actually committing a worse offense than those using biological weapons: at least biological weapons tend to break down after some time.  Uranyl salts stay on the ground surface and eventually end up in animals and humans.  This, too, has been known since 1980s at least.

Polluting groundwater is a very real concern, although I forget under what conditions that's the problem versus how much stays in place due to adsorption.  IIRC the adsorption is generally quite high, hence staying in place on clays etc. in the soil.  The Oklo natural reactor is even in sandstone (I think?), and despite its temperature for a long time, there wasn't much migration for the last couple billion years.

Solubility also varies with pH (it's amphoteric), and oxidation state (two, or three? states are at environmentally relevant potentials I think?).  And it forms complexes with many things soluble and insoluble.  So, make of that what you will I guess, heh.

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Online Nominal Animal

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Re: Stock Electronic Image FAILS
« Reply #930 on: July 09, 2023, 12:50:41 am »
So, make of that what you will I guess, heh.
It's much like the discussion around lead.  It is a very useful material, and many of its alloys are not that biosoluble, nor release much lead atoms, ions, or particles to typical groundwater.  But some other lead compounds, and lead particulates or ions dissolved in water, are.

Or cyanide.  The cyanide anion itself is extremely poisonous, but many nitriles like methyl cyanoacrylate (superglue) are not toxic per se (only the depolymerized gases created when heated are very strong irritants).  It is quite safe to use cyanoacrylate glue to close a wound, for example.
 
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Offline ledtester

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Re: Stock Electronic Image FAILS
« Reply #931 on: July 09, 2023, 12:56:46 pm »
I don't think you want to use a battery spot welder on your PCB like this...


 
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Offline PlainName

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Re: Stock Electronic Image FAILS
« Reply #932 on: July 09, 2023, 01:46:45 pm »
It's for finding shorts. Briefly.
 
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Offline Ed.Kloonk

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Re: Stock Electronic Image FAILS
« Reply #933 on: July 09, 2023, 02:16:46 pm »
It's for finding shorts. Briefly.

Smoke signals are the new diagnostic comms protocol.
iratus parum formica
 
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Offline PlainName

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Re: Stock Electronic Image FAILS
« Reply #934 on: July 09, 2023, 05:50:38 pm »
Spark-illuminated for visibility.
 

Offline AndyBeez

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Re: Stock Electronic Image FAILS
« Reply #935 on: July 09, 2023, 05:56:51 pm »
Use for connecting buried vias ???
 

Offline Gyro

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Re: Stock Electronic Image FAILS
« Reply #936 on: July 09, 2023, 08:35:07 pm »
I'm a bit concerned about the wire and DC Jack!
Best Regards, Chris
 
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Offline NiHaoMike

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Re: Stock Electronic Image FAILS
« Reply #937 on: July 19, 2023, 12:29:09 am »
Another Facebook special.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
 
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Online xrunner

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Re: Stock Electronic Image FAILS
« Reply #938 on: July 19, 2023, 12:38:25 am »
Hahahaha - yea! What kind of math is that? 15 volts - 125 amps?  :-DD
I told my friends I could teach them to be funny, but they all just laughed at me.
 
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Offline RoGeorge

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Re: Stock Electronic Image FAILS
« Reply #939 on: July 19, 2023, 05:23:30 am »
I think that's a typo.
912 should be 911.  ;D
 
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Offline rhodges

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Re: Stock Electronic Image FAILS
« Reply #940 on: July 25, 2023, 11:51:29 pm »
I was just wandering around aliexpress, and found this gem.Note the "fashion design" at the end.
Currently developing STM8 and STM32. Past includes 6809, Z80, 8086, PIC, MIPS, PNX1302, and some 8748 and 6805. Check out my public code on github. https://github.com/unfrozen
 

Offline CatalinaWOW

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Re: Stock Electronic Image FAILS
« Reply #941 on: July 26, 2023, 09:28:05 pm »
I was just wandering around aliexpress, and found this gem.Note the "fashion design" at the end.

I love the clarity.  The title says it is a no pinhole thermowell, but the description says that the pinhole is made of stainless steel. 

I am actually sure that the product is generally OK, but apparently built on a low enough margin that they can only afford Google translate to write their copy.
 

Offline WattSekunde

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Re: Stock Electronic Image FAILS
« Reply #942 on: August 08, 2023, 11:18:13 am »
Wonder what he is hearing for?
 
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Offline McBryce

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Re: Stock Electronic Image FAILS
« Reply #943 on: August 08, 2023, 11:33:41 am »
Maybe he can hear the magic smoke escaping?

McBryce.
30 Years making cars more difficult to repair.
 

Offline eutectique

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Re: Stock Electronic Image FAILS
« Reply #944 on: August 08, 2023, 12:00:57 pm »
Improvised suction pen for this beefy CPU.
 

Offline artag

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Re: Stock Electronic Image FAILS
« Reply #945 on: August 08, 2023, 12:19:01 pm »
I'm a bit concerned about the wire and DC Jack!

It's not quite as stupid as it looks. The welding current goes through the screws at the top and down the copper rods, but there's a switch, operated by pressure against the spring (the rods slide withjin the handle) which closes a circuit in the DC jack cable.  This then triggers a transistor switch which controls the welding current.
 
The usage picture is, however, completely ridiculous.
 

Offline AndyBeez

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Re: Stock Electronic Image FAILS
« Reply #946 on: August 11, 2023, 04:58:06 pm »
Rookie mistake... :-[
 

Offline RoGeorge

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Re: Stock Electronic Image FAILS
« Reply #947 on: August 11, 2023, 05:04:15 pm »
Might be the extraction of a dead battery.

Offline AndyBeez

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Re: Stock Electronic Image FAILS
« Reply #948 on: August 11, 2023, 05:25:47 pm »
Might be the extraction of a dead battery.
Well it is very dead now :horse:
 

Offline fzabkar

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Re: Stock Electronic Image FAILS
« Reply #949 on: September 01, 2023, 04:28:17 am »
Man charged with trying to export US tech to company that helps build Russian war weapons:
https://www.abc.net.au/news/2023-09-01/man-charged-with-exporting-us-tech-to-russia-for-military-use/102803456

https://live-production.wcms.abc-cdn.net.au/97cbbebce723bb347c74e80dcbd7adab

The photo shows 20-year-old junk from a recycling depot.
« Last Edit: September 05, 2023, 05:05:21 pm by fzabkar »
 


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