Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
sranje
User Rank
Manager
Tesla suffered from OCD
sranje   7/25/2014 2:18:17 PM
NO RATINGS
It is well documented that Nikola Tesla suffered from OCD (numbers, utensils when eating, etc.). OCD can be very easily controlled (ERP method) but -- left untreated it can mushroom completely out of control. An example is Howard Hughes whom reportedly personal physicians escallated into full insanity to grab his wealth. A blemish forever on Mormon church infrastructure which reportedly hugely benefited.

Sheepdoll
User Rank
Blogger
Re: A little known problem with DC
Sheepdoll   7/25/2014 12:53:20 PM
NO RATINGS
SpeedEvil --The amount of current needed to magnetise, even when very close to a DC wire is really quite high.

The story actually came from a magazine for watch collectors.  I do not have a copy on hand so can not look up the actual reference.  Most of the article was on the effects the direct current had on watches, which are sensitive to small amounts of magnetism.  It could be that the pins were becoming magnetized.

Edison's system must have had high currents.  I think it ran about 80 or 90 volts.  There was a lot of line loss.  Reports also indicated that the ground returns in earth were actively charged. That walking over such could cause a tingling sensation. None of this was regulated, so practices in the 1880s may have been quite different than they are now.

Many of early electrical items were used for therapeutic purposes. See the film _Road to Wellville_ for examples.

My personal take on the corset story is that it is much like cellphone radiation exposure.  There was a propaganda war over which system was the least leathal.



Susan Rambo
User Rank
Blogger
Charming
Susan Rambo   7/25/2014 12:17:08 PM
NO RATINGS
This is a charming, quick read about Tesla and Van Gogh; interesting premise. You could go back to school and use it for your thesis (if you are studying history). I didnt realize the mental health issues with Tesla. Has anyone read a good biography of Tesla they can recomment?

David Ashton
User Rank
Blogger
Re: A little known problem with DC
David Ashton   7/25/2014 6:32:13 AM
NO RATINGS
@Sheepdoll...I never thought that I would be learning about the history of women's undergarments on EETimes!  But then I forgot, you're an "Active historical costumer" to quote your profile.  Thanks for the insights :-)

SpeedEvil
User Rank
Rookie
Re: A little known problem with DC
SpeedEvil   7/25/2014 6:30:17 AM
NO RATINGS
This seems at best doubtful.

Yes, steel can be magnetised - but not very strongly.

The amount of current needed to magnetise, even when very close to a DC wire is really quite high.

Simply walking into a room lit by, or with a DC appliance will not do it.

 

Sheepdoll
User Rank
Blogger
A little known problem with DC
Sheepdoll   7/25/2014 3:28:13 AM
NO RATINGS
Edison's DC actually changed what women wore.  Corsets in the 1880s used steel "bones" to form the hourglass curve. (actually they are needed for proper support of the bosom.)

DC current causes steel or iron moving through it to become magnetically polarized.  Since most of his installations were in upper class houses, this had the effect of magnetizing the corsets. 

Pins and other objects would stick to these society ladies mid sections.  About this time rubberized elastic was being developed, which allowed us to no longer need steel, whalebone or reeds for support.

Women everywhere have much to thank Tesla.

 

 

 

<<   <   Page 2 / 2


Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Carlos Bueno

Adventures in Userland
Carlos Bueno
Post a comment
Editor’s Note: Excerpted from Lauren Ipsum: A Story About Computer Science and Other Improbable Things, author Carlos Bueno introduces us to Lauren and her adventures in Userland. ...

Max Maxfield

Tired Old iPad 2 vs. Shiny New iPad Air 2
Max Maxfield
16 comments
I remember when the first iPad came out deep in the mists of time we used to call 2010. Actually, that's only four years ago, but it seems like a lifetime away -- I mean; can you remember ...

Martin Rowe

Make This Engineering Museum a Reality
Martin Rowe
Post a comment
Vincent Valentine is a man on a mission. He wants to make the first house to ever have a telephone into a telephone museum. Without help, it may not happen.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...