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Power-User

Join Date: Jan 2007
Location: canada
Posts: 126

electromagnetic effects on humans

04/20/2008 9:39 AM

fellow brain users,

this is topic previously discussed, something new , perhaps not so new, came up in the news two days ago. over the years, it has been noted that people that have electric heating are developping leucemia, it had been somewhat debated that kids developped this near powerlines, some said that it had to do with the fact that most people living near powerlines were less rich , hence not having as good a health as ... but now, it is becoming a national issue big enough for national news . it was somewhat not a surprise to me as i hypothesized with other engineers about this matter. now that we are designing a whole new approach to electrical motor, we want to prevent this environmental effect on humans. i tried to find in tesla bio if there was something of a solution, but so far, besides his tower project, nothing positive is showing. I am not very good at mastering electrical or should i say magnetical complex behaviors but perhaps you out there can help find a solution to shield magnetic fields created by electrical motors near humans. Distance is a diminishing risk factor but in a car or a bike for instance, proximity is a must , maintenance people will also be near ... electronics are commonly used next to elec. motors, from on site experiences, a radius of at least 8 feet (2,4 m) will be necessary for computers etc to perform. (next to a 2400 amp 115v, 220v) .

some people here in wine and cheese discussions argue that hydrogen fuel cell is the way to the future. Ok sounds good, but there are major issues that need to be adressed and past lithium batteries r & d proved that H is not without risk. anyway, with the way that we see windmills parks grow, electricity will be part of our lives for long term and we will use that electricity for motorization, not to mention low maintenance and low rpm tork advantages. being a little philosophical here a bunch of people brag about sustainable, durable, green, ecological, biological, organics, bla bla bla . But if you tell them to walk in cold winter or hot summer weather, they dont brag so much, so who is left with the real problems ... you guessed it , inventors, architects, and engineers.

by the way, do you drink in pastic containers, wooooo ! check the news.

thank you for your inputs, remember the KISS system, we are not geniuses.

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Power-User

Join Date: Jan 2008
Location: Silvis, IL (Quad Cities)
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#1

Re: electromagnetic effects on humans

04/20/2008 10:20 AM

I don't really believe, well basically anything that you said. But, if you wish to create a shield around motors check out a Faraday cage.

http://en.wikipedia.org/wiki/Faraday_cage

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Guru

Join Date: Jul 2007
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#2

Re: electromagnetic effects on humans

04/20/2008 12:04 PM

Or, conversely, live in a Farady cage. Look, without electromagnetic radiation, Brazilian supermodels would not have gorgeous tans. Without beautiful Brazilian supermodels, human life would lose meaning. Without human life, the planet would have a chance to recover. Ergo, bring on the EM radiation!

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#3

Re: electromagnetic effects on humans

04/20/2008 4:01 PM

I think the first thing you should do is get some hard data. Perform some measurements of magnetic and electric fields at various distances from motors and electronic switching controllers, then compare it to measurements from other electrical devices and safe limits stated in international standards. Data can also be obtained from studies that have already been done if you do not have the necessary equipment or knowledge to perform and interpret the results (which you really should). Did someone mention an EV motor study.

Hard data is a much better starting position than hypothesis, especially when you yourself indicate that electrical/magnetic behaviour is not your strong point.

Now I could tell you the answers, but the learning journey is FAR more interesting and you will get a lot more out of it than me just giving you a simple 'yes', 'no' or 'all you need is to just just do this' answer (which is what I could do).

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#4

Re: electromagnetic effects on humans

04/20/2008 9:00 PM

I'VE BEEN WORKING AROUND HI-VOLTAGE FOR YEARS AND HAVE NOT HAD ANY PROBLEMS YET YET YET YET....

BY THE WAY NUCLEAR ENERGY WILL BE THE WAVE OF THE FUTURE

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Guru

Join Date: Nov 2006
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#5

Re: electromagnetic effects on humans

04/20/2008 11:35 PM

"do you drink in pastic containers" No thank you. I don't drink!

You might be interested in this neat little gadget you can make.

A Duplication of Edward Leedskalnin's - 'Perpetual Motion Holder
<http://www.keelynet.com/energy/emery.htm>

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#6

Re: electromagnetic effects on humans

04/20/2008 11:40 PM

I have never been affected by magnetic fields in any noticeable way, but I can say without a doubt, getting too close to a live electrical conductor is NOT good for your health. I may be wrong, but I think that is why high tension lines are mounted on such tall towers...

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#7

Re: electromagnetic effects on humans

04/21/2008 1:55 AM

It's relatively simple to screen the low level magnetic fields you are concerned about. Remembering that most modern motors have very low stray mag fields since the manufacturers want all the flux inside to improve the efficiency.

But first it's important to see if there's actually a problem. You state "but now, it is becoming a national issue big enough for national news" unfortunately this doesn't mean it's true, the media get paid to stir up controversy (trouble) and so sell advertising, not to objectively report the "Truth".

All the reputable studies I've seen show that the mag fields found inside a typical house don't cause any harm.

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#8

Re: electromagnetic effects on humans

04/21/2008 2:13 AM

Sorry the system labeled me a genius A,

Electric fields have been widely tested for causing of leukemia because of a chemical dump and this was found to be false. B

If electric heaters are the source, the electric field is most likely Not! But the chemicals on the heaters were never brought up. C

Magnetic Fields work on the inverse square rule. Electrical workers and once young electrical nerds like myself should have millions of times higher rates of leukemia but do not. There are demographics that are genetic but I have not researched their accuracy. D

Plastics are esters. Could be an issue. E

I've done my share of walking in the cold and the heat and philosophizing. The public is lead by Hegelian tactics, emotional issues and non-altruistic leaders with their lobbyists.

Any tool is a risk, our lack of responsibility for ourselves is a failing. We like to be lazy and taken care of. A satisfied populace is a compliant one. The easy path is not always the safest.

It's late I'm ranting off to bed

Brad

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#9
In reply to #8

Re: electromagnetic effects on humans

04/21/2008 5:49 AM

good day u v guru

please translate the words HEGELIAN TACTICS for me.

having read one or two basic level law texts i was horrified to be informed the term hegelian logic allowed the use of what is may gently be termed as mind bending tied into physcological physiological terror tactics employed by one human(?) assisted by a state's officials ( the last Romanov Tsar of Impartial Russia for example) imposing "corective thinking" on another human.

Read about his famous mirrored cell experiment, it makes anything used in prisons anywhere in the world of today look a like tiny mind's talent time.

thanks

'da ber

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#11
In reply to #9

Re: electromagnetic effects on humans

04/21/2008 11:49 AM

Indeed, Hegel points out that all personal relations can thus be reduced to the fundamental relation of master and slave, of domination and submission. Each must strive to assert and prove himself, and he who has not the nature, the courage, and the general capacity for preserving his independence, must be reduced to servitude. This charming theory of personal relations has, of course, its counterpart in Hegel's theory of international relations. Nations must assert themselves on the Stage of History; it is their duty to attempt the domination of the World.

Karl Popper, The Open Society and Its Enemies

It seems the tag Hegelian Tactics has been given to the act of:

A) Creating a specific problem that moves a person or people to react to want this problem fixed;

B) Be the fixer of this problem with the specific changes enacted that would have met resistance without the problem to over state them;

C) Reap the rewards of the change without the negative backlash because the person or people wanted the problem fixed and the fix was waiting for the proper acceptance to its implementation.

This is my understanding of the term. My original source is no longer available to me and google did not turn up any thing I could directly use as supporting this.

Brad

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Anonymous Poster
#10

Re: electromagnetic effects on humans

04/21/2008 7:06 AM

I am an Operator EMJ and work in the state of Michigan for the states electrical transmission company. I work within the minimum work/approach clearances of 345KV(345000volts) and 138kv(138000volts) and i average about 6 hours of exposure daily! I have not yet experienced any adverse health effects yet ill let you know when i do Oh and if you want to also include the intensity of these fields our lines can average 500A at those voltages

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Guru

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#12

Re: electromagnetic effects on humans

04/22/2008 11:17 PM

Quack! Quack!

Anecdotal reports are not evidence. A lot of people with gas heat develop leukemia too. What panics these people into hysteria is a word, "radiation". They hear electromagnetic radiation and their flea brains jump to nuclear radiation and they get nuts.

I have not yet heard of any controlled test which shows any damage from magnetic fields.

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