In contrast to mechanical waves, electromagnetic waves can travel without a medium. This implies that electromagnetic waves can pass not only through solid objects like air and rock but also through empty space.
James Clerk Maxwell, a Scottish scientist, created a scientific theory to explain electromagnetic waves in the 1860s and 1870s. He realized that electromagnetic waves can be created when magnetic and electrical fields combine together. He compiled this electricity-magnetism relationship into what are now known as "Maxwell's Equations."
German physicist Heinrich Hertz used Maxwell's theories to explain how radio waves are transmitted and received. In honour of Heinrich Hertz, the hertz, or one cycle per second, is the unit of radio wave frequency. Two issues were resolved by his radio wave experiment. First, he had proven that the speed of radio waves was the same as the speed of light, which was something Maxwell had only theorized.
This demonstrated how radio waves are a type of light. Second, Hertz discovered how to create electromagnetic waves by causing the electric and magnetic fields to separate from wires.
learn more
brainly.com/question/25847009
#SPJ9
This would actually be done by them cutting off the shipments, and based on this, this would be handled mainly because of the fact that these people were practically neutral. They were not participating in the war, neither were they not going in. So they had a equal balance. And therefore, this would be one thing that they would have to do, to <span>cut off oil shipments to the rest of the world.</span>
Who defended slavery and slaves rights?
It is A: John C. Calhoun. He gave a speech to the US Senate in 1837 articulating the pro-slavery political argument.
————————
Who took the view of the federalists and the power of the national government?
It is B: Daniel Webster. He earned his fame for his supporting in the fed gov and helped ease border tensions.
————————
Who was known as the “Great Compromiser?”
It is C: Henry Clay. He played a major role in formulating the three landmark sectional compromises: Missouri Compromise of 1820, Tariff Compromise of 1833, etc.
Answer:
a. because russia had the longest coastline in the world, it had access to many ports year round.
b. peter believed that russia had enough ports.
Explanation:
i just did it
