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The electric field is the driver of the EM wave power. The source of the EM wave makes a sinusoidal electric field continuously then the changing electric field makes a magnetic field instantly in all paths of its propagation, so the magnetic field is sinusoidal also with a delay phase.

Located just northwest of the Belgian city of Antwerp, Zeeland is more than 11,000 miles (17,700 km) from New Zealand.

Spread over an area of about 2.97 million square miles, Australia is the smallest of the seven continents – Asia, Africa, North America, South America, Antarctica, Europe, and Australia. While it is commonly referred to as an island or more specifically as the island continent, geographers insist that Australia is

There is one continent that has parts in each of the four hemispheres of the Earth. Which continent exists in all four hemispheres? The answer is Africa. And some bonus trivia: While some sources say Istanbul, Turkey, is the only city that exists in two different continents, World Atlas says

Multipole radiation is a theoretical framework for the description of electromagnetic or gravitational radiation from time-dependent distributions of distant sources.

I’m unsure; what I am sure of is that this post does not confirm to community standards; it needs clarification and ideally it should be edited and placed in a more scientific context