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
Answer: A) England become more Scandinavian.
Explanation: Norman Conquest, the military conquest of England by William, Duke of Normandy, primarily effected by his decisive victory at the Battle of Hastings (October 14, 1066) and resulting ultimately in profound political, administrative, and social changes in the British Isles. The Norman Conquest changed the face of England and Western Europe forever: The Norman Conquest broke England's links with Denmark and Norway and connected the country to Normandy and Europe. William got rid of all the Saxon nobles and imposed the feudal system on England.
HOPE THIS HELPED :)
Carnegie believed that the wealthy had an obligation to share their wealth to improve society and help others.
Carnegie wrote his beliefs about wealth in the <em>Gospel of Wealth </em>written in 1889.
Carnegie practiced what he preached. He shared his wealth with many organizations in particular libraries, universities, and artistic institutes. He wealth was used to support the educational community of the US and provide opportunities for others to benefit from his wealth. Many other wealthy members of society have followed in his model by using their wealth to make the US a better place.
He escalated the r a c i s t war on drugs.
He ran a r a c i s t election campaign.
He committed war c r i m e s
He made a dishonest case for war.
He did nothing in the Hurricane Katrina event
