What is #electricity? What is #magnetism? What is - TopicsExpress



          

What is #electricity? What is #magnetism? What is #electromagnetism? Is it really any more explicable than #light ? It is all very well saying that Maxwells equations prove light is an electromagnetic wave. What is an electromagnetic wave? If scientists and philosophers of the past felt the need to posit the existence of the aether in order to explain light waves, why should we blithely accept that electromagnetic waves can flow through a vacuum? If a wave is a disturbance in something, is it sensible to say this criteria no longer applies with electric and magnetic fields? Are there electric and magnetic fields waiting to be disturbed throughout the entire universe? Over to you, Professor Jim Al-Khalili, viz: bbc.co.uk/iplayer/episode/p01k4yt6/Light_and_Dark_Light/
Posted on: Tue, 19 Nov 2013 20:08:13 +0000

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