Interesting findings on the internet

The place to be when you have TEA. Discuss all kinds of test equipment.

Important: Use tags for the type of equipment your topic is about.
Forum rules
Use tags for the type of equipment your topic is about. Include the "repairs" tag, too, when appropriate. If a new tag is needed, request one in the TEAdministration forum.
User avatar
MED6753
Posts: 847
Joined: Sun Oct 23, 2022 6:02 pm
Location: Middletown, NY USA

Re: Interesting findings on the internet

Post by MED6753 »

BU508A wrote: Wed May 06, 2026 2:49 pm It is the current that kills, not the voltage.
It takes less than 150ma to kill you if it goes across your heart.
An old gray beard with an attitude. I don't bite.....sometimes :twisted:
Zenith
Posts: 1520
Joined: Sat Oct 22, 2022 9:06 pm

Re: Interesting findings on the internet

Post by Zenith »

Part of the danger of getting shocks is the involuntary movement that follows. A shock from a spark plug can cause a hand to come in contact with dangerous moving parts. A shock from a CRT could cause an awkward fall onto something.
tggzzz
Posts: 2428
Joined: Sat Oct 22, 2022 8:17 pm

Re: Interesting findings on the internet

Post by tggzzz »

EC8010 wrote: Wed May 06, 2026 2:17 pm Apparently, a shock can cause the release of chemicals into the blood stream that can kill up to 24 hours later, but prompt treatment can prevent this.
Any reference for that mechanism?
User avatar
EC8010
Posts: 274
Joined: Mon Sep 08, 2025 12:41 am

Re: Interesting findings on the internet

Post by EC8010 »

Sadly, no. I didn't query it when it came out as a company edict because it seemed like a sensible thing to do. But it would be nice to know why.
User avatar
MED6753
Posts: 847
Joined: Sun Oct 23, 2022 6:02 pm
Location: Middletown, NY USA

Re: Interesting findings on the internet

Post by MED6753 »

When I was a kid my Father was working on a portable TV and had the chassis pulled away from the CRT. That meant that the ground strap to the aquadag coating on CRT was charging up with no place to go. (Inner and outer coating are a giant capacitor) He powered up the TV and it had a perfect pix. I pointed my finger close to the face plate of the CRT mentioning how good the pix was and that capacitor discharged right through the front glass probably about 14kV in one spark into my finger. Hurt like hell. :P :D
An old gray beard with an attitude. I don't bite.....sometimes :twisted:
User avatar
EC8010
Posts: 274
Joined: Mon Sep 08, 2025 12:41 am

Re: Interesting findings on the internet

Post by EC8010 »

I'll bet the verbal whipping your dad got from your mum hurt more.
User avatar
AVGresponding
Posts: 707
Joined: Sat Oct 22, 2022 7:30 pm
Location: The Yorkshire

Re: Interesting findings on the internet

Post by AVGresponding »

BU508A wrote: Wed May 06, 2026 2:49 pm It is the current that kills, not the voltage.
I guess it's time to link this video again: https://www.youtube.com/watch?v=BGD-oSwJv3E&t=10s
nuqDaq yuch Dapol?

(╯°□°)╯︵ ┻━┻
User avatar
MED6753
Posts: 847
Joined: Sun Oct 23, 2022 6:02 pm
Location: Middletown, NY USA

Re: Interesting findings on the internet

Post by MED6753 »

EC8010 wrote: Wed May 06, 2026 4:59 pm I'll bet the verbal whipping your dad got from your mum hurt more.
I don't recall her saying anything. :lol:
An old gray beard with an attitude. I don't bite.....sometimes :twisted:
User avatar
EC8010
Posts: 274
Joined: Mon Sep 08, 2025 12:41 am

Re: Interesting findings on the internet

Post by EC8010 »

I expect the words used weren't for your young ears.
Zenith
Posts: 1520
Joined: Sat Oct 22, 2022 9:06 pm

Re: Interesting findings on the internet

Post by Zenith »

tggzzz wrote: Wed May 06, 2026 4:09 pm
EC8010 wrote: Wed May 06, 2026 2:17 pm Apparently, a shock can cause the release of chemicals into the blood stream that can kill up to 24 hours later, but prompt treatment can prevent this.
Any reference for that mechanism?
Sounds like an old wive's tale, but death by electrocution doesn't present ready opportunities for ethical research.
User avatar
EC8010
Posts: 274
Joined: Mon Sep 08, 2025 12:41 am

Re: Interesting findings on the internet

Post by EC8010 »

I looked on the Internet and found nothing to support it, so you could well be right. Sadly, I also found British Medical Journal stuff that was littered with errors. I don't have much faith in medics. If you present with something obvious, they can often help significantly, but it has to be really obvious for them to get it right. I've twice been turned away with broken bones, with the medics telling me I was wasting their time.

You are certainly right about the ethical research bit. All of the limits associated with RCDs comes from work done during and before WWII.
tggzzz
Posts: 2428
Joined: Sat Oct 22, 2022 8:17 pm

Re: Interesting findings on the internet

Post by tggzzz »

EC8010 wrote: Thu May 07, 2026 8:48 am I've twice been turned away with broken bones, with the medics telling me I was wasting their time.
Sometime it is necessary to insist, and mutter words like "I have a complex medical condition".

I managed the opposite. I walked on a painful foot and after a week I cycled 6 miles to the "nearby" A&E. Turned out I had a very obvious inch-long spiral fracture of a metatarsal. The doctors did nothing, with my agreement - since I was wearing hiking boots with a stiff sole, and that was as good as a cast! Naturally I cycled back home.

Went to a job interview in a suit with those boots. Got the job and enjoyed a few years at a zany company.
You are certainly right about the ethical research bit. All of the limits associated with RCDs comes from work done during and before WWII.
And presumably anecdotes thereafter.

I would have thought that a biochemical "24 hours later" pathway would be present in animals, and could therefore be ethically researched.

I suspect that the "release of chemicals into the bloodstream that can kill up to 24 hours later" is a "mistranslation". It seems more likely that damage might not be immediately apparent, but might manifest itself after a day. Such damage would be apparent through chemical markers. Hence an inversion of cause and effect.
User avatar
EC8010
Posts: 274
Joined: Mon Sep 08, 2025 12:41 am

Re: Interesting findings on the internet

Post by EC8010 »

My lack of clarity. I should have said that the chemicals are released following shock, but that they could take effect up to 24 hours after.

After being knocked off my bike, I cycled three miles home with hurt arm that second visit to hospital revealed was broken and needed an operation.
Zenith
Posts: 1520
Joined: Sat Oct 22, 2022 9:06 pm

Re: Interesting findings on the internet

Post by Zenith »

Adrenalin is released following trauma. I've noticed that after a near miss in a car, say someone pulled out and I had to brake sharply, I've felt an adrenalin rush. Since there's no real threat, it's a nuisance to be wound up like that. After a minute or two it wears off and everything seems strange. I haven't noticed it after electrical shocks.

I had a quick look on the WWW and I couldn't see anything about chemicals released after electrical shock, which were dangerous or needed management.
tggzzz
Posts: 2428
Joined: Sat Oct 22, 2022 8:17 pm

Re: Interesting findings on the internet

Post by tggzzz »

Zenith wrote: Thu May 07, 2026 1:23 pm Adrenalin is released following trauma. I've noticed that after a near miss in a car, say someone pulled out and I had to brake sharply, I've felt an adrenalin rush. Since there's no real threat, it's a nuisance to be wound up like that. After a minute or two it wears off and everything seems strange. I haven't noticed it after electrical shocks.
After I fell and snapped my patellar tendon and the ambulance had arrived and assessed me (i.e. maybe 30 minutes), my arms/hands started shaking uncontrollably for a minute or two. That was the after-effect of adrenaline. I hadn't experienced that before; it was interesting to observe.
User avatar
BU508A
Posts: 313
Joined: Fri Nov 11, 2022 10:40 am

Re: Interesting findings on the internet

Post by BU508A »

Quote:
"A web page that tells you what your browser gave away the moment you arrived. No login, no form, no permission. Most pages do this. None of them tell you."

Link:
https://sinceyouarrived.world/taken
Post Reply