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.
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Answer:
A.
Spain claimed land as far north as North Dakota and as far west as the Rocky Mountains.
Explanation:
Edg2020 also it was to Kansas.
Answer:
False
Explanation:
Other people print money it is just not legal
Answer:
The content of Dr. King’s speech, his inspiring presence, and the moment in history all came together to make the iconic “I Have A Dream” speech the defining moment of the American Civil Rights Movement. But there are several other reasons why this speech, delivered over 50 years ago, remains an example of one of the best speeches in American history.
Since part of my job is to help people become better presenters, I’ve noticed several techniques that we can all learn from and be inspired by in this magnificent speech.
IT’S ANCHORED IN A POWERFUL RELATED LOCATION
In most cases, you can’t handpick the spot to give a presentation, as MLK did for supreme symbolic effect when he stood on the steps of the Lincoln Memorial and echoed the opening words of the Gettysburg Address (“Five score years ago . . . ). But you absolutely can amplify your message by adapting it to your setting and location.
Think about place, and how you can weave imagery, anecdote, and historical context into your presentation. Even if you’re presenting essentially the same material in Annapolis and Anaheim, it’s worth exploring what inspiration you can draw from each location to make your overall presentation more unique, more tailored, and more memorable. Abraham Lincoln also incorporated context in his iconic speech.
Explanation:
The answer is D Senator henry cabot lodge failed to convince enough senators that the league would benefit the united states. Senator henry cabot did put forth great effort but in the end it just wasn't enough
