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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The first line contains alliteration. Alliteration is when consecutive words begin with same sounds. In this case, you have Having Harrowed H.e.ll, which all start with the H sound. It refers to spoken sounds, not just letters, as some letters or letter clusters might be pronounced differently, so it has to begin with same sounds.
The second line contains a.s.sonance. A.s.sonance is a figure of speech used in poetry in which words contain the same vowel or dipht.hong in numerous words in consecutive order. In the second line, you have Light, Smiles, Drives, which all contain the dipht.hong /ai/ which repeats to give of a joyful sound when spoken
The third line contains consonance. It is basically the opposite of a.ssonance, instead of vowels and dipht.hongs, you have consonants that repeat in sequence over numerous words. In the third line, you have Mortal To Immortalize, where you have the strong T sound that is used in consecutive words.
