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Darwin award goes to Texas girl fried in bathtub by her cell phone

37,385 6,517 July 12, 2017 at 04:54 AM in Chat (3) USA TODAY
Unplug it STUPID!

A 14-year-old girl from Lubbock, Texas, died Sunday after being electrocuted in a bathtub while using her cell phone, according to local reports.

Madison Coe was electrocuted after she either grabbed her phone that was plugged in or plugged in her phone, her grandmother Donna O'Guinn told KCBD-TV. The teen was visiting her father in New Mexico when the incident occurred.

"There was a burn mark on her hand, the hand that would have grabbed the phone. And that was just very obvious that that's what had happened," O'Guinn told the news station.

https://www.usatoday.com/story/ne...467225001/

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Joined Aug 2014
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> bubble2 2,960 Posts
euuser3818772
07-12-2017 at 05:42 PM.
07-12-2017 at 05:42 PM.
Quote from Dr. J :
V=IR

If I is important, then with a given V, we need to know R.

If R ~ 1000 ohms and V=5 then I ~ 0.005 A = 5mA

Or simply put a phone charger's electrical output isn't going to kill you
"There was a burn mark on her hand, the hand that would have grabbed the phone."
5V can't possibly cause any burn marks on human skin. So it has to be the AC side.
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Joined Feb 2008
Custom User Title.
> bubble2 38,964 Posts
6,569 Reputation
User339811
07-12-2017 at 09:51 PM.
07-12-2017 at 09:51 PM.
are we waiting for free money from lawsuit? Need some extra cash to buy new iPhone.
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Joined Jul 2005
killroy was here
> bubble2 12,166 Posts
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dayv
07-13-2017 at 06:27 AM.
07-13-2017 at 06:27 AM.
Quote from Fallacy :
Why are they trying to figure out resistance again?

Also, if you can lick a 9V battery and feel it, you should be able to feel 5mA.

Here's a good summary of what current level will kill you
you are comparing volts to miliamps. that's like comparing hamsters and celery then arriving at the conclusion that Nagin was the lone gunman on the grassy knoll.

that table is garbage. TASERs put out a higher amperage. it is about how the current travels in addition to the amount.
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Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 07:09 AM.
07-13-2017 at 07:09 AM.
Quote from dayv :
you are comparing volts to miliamps. that's like comparing hamsters and celery then arriving at the conclusion that Nagin was the lone gunman on the grassy knoll.

that table is garbage. TASERs put out a higher amperage. it is about how the current travels in addition to the amount.
You should do your research before you try to instigate, stupidity doesn't look good on you.

Taser: high VOLTAGE, very low amps (milliamps) http://www.slate.com/articles/new..._work.html

One of the strongest stun gun has 4.5mA - http://www.tbotech.com/highest-am...un-gun.htm

Stun guns have 9V batteries, and some personal defense tasers use 9V/AA also. The police ones have other batteries. How do you get HIGH amps from a 9V battery when you step it up to 50,000V?

Short answer: you don't. It's against the laws of physics.
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Last edited by Fallacy July 13, 2017 at 07:20 AM.
Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 07:12 AM.
07-13-2017 at 07:12 AM.
Quote from joeg9897 :
"There was a burn mark on her hand, the hand that would have grabbed the phone."
5V can't possibly cause any burn marks on human skin. So it has to be the AC side.
I tried bringing logic to this thread, people think they're armchair electricians by using google.

fark that shit.
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Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 07:15 AM.
07-13-2017 at 07:15 AM.
Quote from Dr. J :
V=IR

If I is important, then with a given V, we need to know R.

If R ~ 1000 ohms and V=5 then I ~ 0.005 A = 5mA

Or simply put a phone charger's electrical output isn't going to kill you
I already commented about this, she had an EXTENSION CORD. You don't know which part electrocuted her. The extension cord has 120V RMS AC. So at a 1kOhm resistance, that's 120mA, enough to kill you.

Which is why, don't touch 120V with wet hands. Dry hands have a much higher resistance, so it wont kill you, but will sting (ask me how I know? lol)
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Joined Aug 2014
L7: Teacher
> bubble2 2,960 Posts
euuser3818772
07-13-2017 at 07:35 AM.
07-13-2017 at 07:35 AM.
Quote from Fallacy :
I already commented about this, she had an EXTENSION CORD. You don't know which part electrocuted her. The extension cord has 120V RMS AC. So at a 1kOhm resistance, that's 120mA, enough to kill you.

Which is why, don't touch 120V with wet hands. Dry hands have a much higher resistance, so it wont kill you, but will sting (ask me how I know? lol)
You don't say...

We were talking about how poorly that article was written. Which has been rehashed onto other media outlets btw.
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Here's to the future
> bubble2 25,141 Posts
707 Reputation
Iaaaiws
07-13-2017 at 07:51 AM.
07-13-2017 at 07:51 AM.
Quote from Fallacy :
Dry hands have a much higher resistance, so it wont kill you, but will sting (ask me how I know? lol)
My guess is you Googled it.

Popcorn
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Joined Dec 2005
My # is bigger than yours
> bubble2 37,385 Posts
6,517 Reputation
Original Poster
SnakePlisken
07-13-2017 at 07:54 AM.
07-13-2017 at 07:54 AM.
Quote from Fallacy :
I already commented about this, she had an EXTENSION CORD. You don't know which part electrocuted her. The extension cord has 120V RMS AC. So at a 1kOhm resistance, that's 120mA, enough to kill you.

Which is why, don't touch 120V with wet hands. Dry hands have a much higher resistance, so it wont kill you, but will sting (ask me how I know? lol)
combine that with the muscle spasms & they ain't letting go of nothing.

p.s. ask me how i know
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Joined Aug 2003
(o)(o)
> bubble2 9,556 Posts
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ikonoklast
07-13-2017 at 08:00 AM.
07-13-2017 at 08:00 AM.
Quote from SnakePlisken :
combine that with the muscle spasms & they ain't letting go of nothing.

p.s. ask me how i know
Have you ever tried to make diamonds out of coal?
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Joined Aug 2003
(o)(o)
> bubble2 9,556 Posts
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ikonoklast
07-13-2017 at 08:03 AM.
07-13-2017 at 08:03 AM.
Quote from Fallacy :
Which is why, don't touch 120V with wet hands. Dry hands have a much higher resistance, so it wont kill you, but will sting (ask me how I know? lol)
TIL Fallacy is electroBOOM?

https://www.youtube.com/user/msadaghd
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Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 08:04 AM.
07-13-2017 at 08:04 AM.
Quote from SnakePlisken :
combine that with the muscle spasms & they ain't letting go of nothing.

p.s. ask me how i know
I have a funny story about that, I was taking apart one of those throw away Kodak cameras, which had a built in flash. Well those flashes use capacitors to store the power and instantly trigger the flash.

I assumed that the damn thing was discharged, nope. That capacitor shocked me and kept me holding it for what felt like eternity (probably half a second at most).

So yes, I know how you know Wink
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Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 08:05 AM.
07-13-2017 at 08:05 AM.
Quote from Iaaaiws :
My guess is you Googled it.

That's what I do 8 hours a day at my day job. Just google for answers.
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Joined Sep 2006
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> bubble2 19,431 Posts
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Fallacy
07-13-2017 at 08:06 AM.
07-13-2017 at 08:06 AM.
Quote from ikonoklast :
TIL Fallacy is electroBOOM?

https://www.youtube.com/user/msadaghd
I wish, that guy has more hair than me Sadwalk
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Joined Jul 2005
killroy was here
> bubble2 12,166 Posts
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dayv
07-13-2017 at 08:20 AM.
07-13-2017 at 08:20 AM.
Quote from Fallacy :
You should do your research before you try to instigate, stupidity doesn't look good on you.

Taser: high VOLTAGE, very low amps (milliamps) http://www.slate.com/articles/new..._work.html

One of the strongest stun gun has 4.5mA - http://www.tbotech.com/highest-am...un-gun.htm

Stun guns have 9V batteries, and some personal defense tasers use 9V/AA also. The police ones have other batteries. How do you get HIGH amps from a 9V battery when you step it up to 50,000V?

Short answer: you don't. It's against the laws of physics.
i said higher, not HIGH. i wouldn't consider 100mA or 500mA HIGH for that matter.

batteries have little to do with anything it is all about circuitry. the circuits step-up the voltage and store it in capacitors for quick discharge. you could build a stun gun out of watch batteries if you wanted and you probably wouldn't need that many. what do you think they put in the slugs TASER makes that can be fired from a shotgun?

here is the TASER patent.

http://archive.is/20140819211449/...nph-Parser

Quote :
A hand-held stun gun incapacitates a human target by generating a series of powerful electrical output pulses across first and second spaced apart output terminals in response to closure of a trigger. A battery power supply includes an electronic switch, an energy storage capacitor and a transformer for converting low voltage, direct current into a series of high voltage output pulses across the first and second output terminals. Each output pulse includes a pulse energy of from 0.9 joules to 10 joules. The series of output current pulses have an RMS current flow of from 100 milliamps to 500 milliamps when the first and second output terminals are applied to a human target.
...
Quote :
The profile of pulses used in prior art electric weapons is deficient in several respects. First, the energy produced by the pulses is in the range of 0.01 to 0.5 joules. This is outside the range of 0.9 joule to 10 joules required in each pulse produced in the apparatus of the invention. Second, the width of each pulse in prior art apparatus is about one to seven and a half microseconds. The pulse width in the apparatus of the invention must be nine to one hundred microseconds. Third, the current in each pulse produced by prior art apparatus is in the range of about twenty to sixty-five milliamps. The current in each pulse produced in the apparatus of the invention must be in the range of one hundred to five hundred milliamps. In addition, the pulses must be delivered to a target to produce actual contractions of skeletal muscles sufficient to prevent use of the muscles by the individual subjected to the pulses.
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