electromagnetic

Well, not "free energy" in the woo terms we're used to. http://www.fastcodesign.com/1671670/a-tiny-box-that-charges-aa-batteries-from-electromagnetic-fields#2 Seems he created a charger that picks up static electricity from surrounding EM fields to charge a small battery. If you watch the...

I just listened the the most recent episode of "On The Media", an NPR podcast that generally focuses on how journalists and the media report on current events, and frequently does a good job of calling out bad and biased reporting. However, this week they dipped their toe into science...

http://beta.thehindu.com/sci-tech/energy-and-environment/article458070.ece Sounded worryingly catasrophic until I saw the source of that last line :rolleyes: Sure the 2012 conpiracy nuts are going to absolutely jump on this. NASA...

It seems that there are several explanations for why someone would see what is commonly referred to as a "shadow person". The wikipedia article states some good ones, and these are things that could affect anyone. However, it seems to me that it only happens to woo believers, which I find kind...

Sense About Science has just published a very useful briefing on the health risks of radiation. In particular there is a great deal of material about non-ionising EM radiation. Next time you are having an argument with someone who objects to a mobile phone mast being sited near a school, you...

This seems like a simple question but is it? We all know that the speed of light is about 300,000 km/s (186,000 mi/s) in a vacuum and that this applies to all other electromagnetic waves too. We also know that this figure is reduced when travelling through air, water, glass, etc. It is often...

If I understand it correctly, it is nothing but a moving fluctuation in an electromagnetic field. But how does it move through a vaccum? What exactly is carrying the information through the vaccum?

I heard someone say this weekend that Humans are pure electromagnetic energy. Is this statement true? Something about it doesn’t sound right to me. He also went on to say that when humans think positively their molecules align like magnets and attract other positive things into their...

This educational thread is dedicated to Roger Coghill, but others are welcome to participate. Rules of the game: 1) This is not a debate thread. If somebody can document information given here to be at fault, they are, of course, welcome to correct it, but stick to facts. 2) This is not a...

Being the recent purchaser of a new portable shortwave set (the Chinese version of a Grundig FR200 -- I'm pleasantly surprised with the selectivity and sensitivity), I noticed something the other night while tuning the bands... Is it just me, or are the wide majority of the English-language...