Workplace Injury

Not hot enough to give a third-degree burn in the ~250 ms it takes someone with normally-functioning reflexes to pull their hand away after it brushes up on it

bitrex wrote in news:Qa4oG.86666$ snipped-for-privacy@fx39.iad:

Oh so now you know how long the event lasts.

Sorry, but YOU DO NOT.

It is not about "reflexes". It is about neural response.

The speed of a nerve impulse varies with the type of nerve impulse the nervous system is sending. Some signals such as those for muscle position, travel at speeds up to 119m/s. Nerve impulses such as pain signals travel slower at 0.61m/s. Touch signals travel at speeds of

76.2m/s.

That alone proves you are guessing as you go. It takes over a second for the pain impulse alone to make it up to the brain (from the finger tip), and then more time for the motor impulse to make it back to the muscle.

The amount of time it takes to render a third degree burn on your skin depends on the skin for one thing, there are four types on the human body, the area AND pressure of the contact, the thermal mass of the object, and its temperature.

At the second hand shop.

Boom boom!

Hey "Fred", it's a discussion group. It could thread-drift to a valuable discussion about soldering, or varicaps, or ice cream.

And yes, the city of San Francisco is holding us all prisoners.

One good if temporary outcome is that the meter maids are giving courtesy tickets on street cleaning days, not the usual $75 ones.

Do you still solder?

--

John Larkin         Highland Technology, Inc 

Science teaches us to doubt. 

  Claude Bernard

the withdrawal reflex is a spinal reflex, by the time the brain gets the memo the hand is already in motion away. it's why it's called a REFLEX.

Even full conscious actions clock in at well under a second; to hit a

100 mph fastball the decision to swing made and the bat has to be in motion by 200 ms after the pitch leaves the pitcher's hand the total flight time to the catcher's mitt is under half a second

Very good! Pity everything has gone digital...

Manly solution :-

Lint free cotton pad, cut a small square out.

Duct tape.

Not coming off any time soon :)

--
--------------------------------------+------------------------------------ 
Mike Brown: mjb[-at-]signal11.org.uk  |    http://www.signal11.org.uk

snipped-for-privacy@signal11.invalid (Mike) wrote in news:r7s2n9$69s$1 @posie.signal11.org.uk:

Here is the right thing to use for face masks...

Until there is a run on them because I opened up y'all's eyes.

Easy choice. A furnace filter. One gets a pretty big sheet from that. Cut as required to whatever shape required. Not certified sterile but you can bet they are before you lay your hands on them.

Far better than ANY solution anyone has offered yet. I saw the fiters the other day looking for my water filters, and that was the first thing that popped into my head.

Now watch those run out everywhere. They are not cheap though, but still way better than a vacuum cleaner bag. The price might keep them from going too soon.

Post of the day!

Cheers, James Arthur

You are suspended for 30 days. I recommend bungee cords.

--

John Larkin         Highland Technology, Inc 

Science teaches us to doubt. 

  Claude Bernard

snipped-for-privacy@highlandsniptechnology.com wrote in news: snipped-for-privacy@4ax.com:

Guaranteed to end your depression over everything.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC / Hobbs ElectroOptics 
Optics, Electro-optics, Photonics, Analog Electronics 
Briarcliff Manor NY 10510 

http://electrooptical.net 
http://hobbs-eo.com

Better resolution:

--
Dr Philip C D Hobbs 
Principal Consultant 
ElectroOptical Innovations LLC / Hobbs ElectroOptics 
Optics, Electro-optics, Photonics, Analog Electronics 
Briarcliff Manor NY 10510 

http://electrooptical.net 
http://hobbs-eo.com