Re: Oops -forgot about EMF - Saabnet.com Bulletin Board

[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Performance | Detail | Clubs & SOC | Other Cars | Books Movies & Music | Chat | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Service/Mechs | Manuals | *Buddy Registry | *Mileage Registry | Polls | What's New | Raffle | Photo of the Month | Sponsors]

General Bulletin Board
Search:
(Search Author's Posts: e.g. Keyword:Author)*Members Only

[Main General Bulletin Board | Post Followup | BBFAQ ] [ Prev by Date ] [ Next by Date ] Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
Re: Oops -forgot about EMF
Posted by Snowmobile [Email] (#686) [Profile/Gallery] (more from Snowmobile) on Thu, 15 Feb 2018 05:38:19

In Reply to: Oops -forgot about EMF, Dave The Ice Age Knave [Profile/Gallery] , Wed, 14 Feb 2018 09:44:00
Alert me when someone posts in this thread:
By EMF, I assume you mean electromagnetic fields? (and hopefully not the band - their music could I suppose have various, even "unbelievable", effects on the human body!)

I would not in any way worry about my safety in the presence of the field through the ignition switch of an ICE vehicle. There is not all that much current and it is essentially DC. Magnetic field around a wire is proportional to current but falls off at 1/r (1 over distance from the wire. So if you hypothetically had 10A (a lot!) through a wire, at a metre, it works out to about 2x10-6 T of magnetic field (0.02G), or about a 10th of the earth's magnetic field. At 1 cm, it is 10x the earth's field, but this amount of static field is in no way dangerous. I do not fear for my kids when they play with bar magnets.

That example is a DC current, so the magnetic field does not change with time. EM fields can be time varying and their frequency makes a big difference in how we percieve them. Electromagnetic fields are dangerous when they are at certain frequencies with enough intensity, eg a microwave oven, or UV light, or X-rays.

In a car (EV included), you are dealing with low frequencies and moderate currents, so basically static fields. This would not concern me at all. Even for an AC motor in a car (with an inverter), I would not be concerned.

I watched an art film last year about someone's perception of sensitivity to stray fields. It was interesting from an artistic perspective but it seemed at odds with physics in many aspects. Maybe some people are more affected by this than others but how is unclear. The human body is complicated both physiogically and psychologically.

EMF!

->Posting last edited on Thu, 15 Feb 2018 05:40:25.

Posts in this Thread:
Alert me when someone posts in this thread:
Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.
If you use GMail, follow these instructions from Google so that they appear in your regular inbox.

Subject:

Posting rules are simple - No for sale/wanted ads or live auctions may be here - use the classifieds.
You may not cross-post your message to multiple BBs.
Personal attacks, insults, or flaming are not allowed.
 Site Members do not see any red text, inline ad links, skyscraper ads, box ads, nor anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the TSN Classifieds)
To add inline links to your post, use [link]http://www.domain.com/[endlink] or use the Optional fields below.
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] or use the Optional Image Link field below.

Optional Link: (e.g. http://www.saabnet.com/)
To promote your own Saab site here, you must have a link back to The Saab Network.
Link Title: (Optional)
Optional Image Link: (e.g. http://www.saabnet.com/img.jpg)



The content on this site may not be republished without permission. Copyright © 1988-2018 - The Saab Network - saabnet.com.
For usage guidelines, see the Saabnet.com Mission and Purpose Page.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org
Your address is: 54.81.150.27 - Using CCBot/2.0 (https://commoncrawl.org/faq/) - Logged.
Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all the Site Membership Benefits!