Uzytkownik "Cecil Moore" napisal w wiadomosci
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On May 20, 11:42 am, "Szczepan Bialek" wrote:
The "like sound" is the oldest and explain the all phenomena.

"All phenomena", including traveling at the speed of light in a
vacuum? :-)

All without exceptions.
In the space are free electrons (plasma). If you move one of them the next
reacts on it. It is normal pressure wave (electric wave).

It is intresting that the speed of electric waves are the same in vacuum and
in conductors.
In insulators the electric waves travel slower.
S*