Originally Posted by
Rick
No offense intended, I have always been interested in how they have prioritized the public safety. After World war two they were doing just like us with prioritizing the motorized vehicles over public safety. In the early 1970s there was a public outcry over the death rate of children. They turned it back the other way and prioritized public safety again.
There most current model does not use the magnet attached to the wheel.
Nova
It is obviously not magic. Faraday invented it but it has taken along time to have a marketable product available. I own a flashing unit made by someone in England from over 20 years ago. reelight has been around for a while also.
Funny you should say "it has been a long time to have a marketable product available..." What Faraday discovered was used by Westinghouse, Tesla, Edison and others to create the electrical grid modern man depends upon.
Reelight is possible due to refinements in manufacturing and modern electronics. The early models required a mounted magnet... the latest model has the magnet, and the coils of wire, in the same housing, and the motion of the rim provides the movement of magnetic fields (eddy currents) required. The Faraday effect is about generation of electricity in a wire by moving a magnet nearby, this moving EM field is the key. The effect goes the other way too... a moving electrical current creates a magnetic field... this is how transfomers work, and motors. Faraday discovered the basic effect... folks like Maxwell refined it. The history is quite long.
BTW, I looked up the patent for Reelight... just so you could read it, if you so desire... magnets and coils of wire, are the key. (Thank you Mr Faraday) Movement of a conducting part... the rim, is what makes it possible... that, and capacitors, and very efficient LEDs.
It IS a quite clever design.
https://patents.google.com/patent/EP2703264A1/en
So ends the science part.
Back to Copenhagen... indeed, it was the social push to reduce deaths, and forego the automobile from being the "thing" (think "monster") that overtakes the cities. It took political will to do this. We shan't go further with that discussion, lest this be pushed to a political forum.
The will of the people... for something better... nicer. That's all it takes. That we know as "advocacy."
