Informative Speech Essay

833 Words Feb 2nd, 2013 4 Pages
Specific Purpose: To give honor and recognition for his scientific achievements.

Thesis Statement: Through his early life experiences and with the knowledge he left behind, Sir Isaac Newton was able to develop calculus, natural forces, and optics. From birth to early childhood, Isaac Newton overcame many personal, social, and mental hardships. It is through these experiences that helped create him to be the person we know today, that is why he is worthy of the Scientist of the Century award.

1. Attention-getter: "What we know is a drop, what we don’t know is an ocean." said Isaac Newton

2. Establishment of ethos: As a former cell mate of Isaac Newton for 5 years with a 23 hour lock down, I really got to know the
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B. Sir Isaac Newton used prisms to show that sunlight was made up of all the colors of the rainbow. This proved that the ancient Greeks ideas about light were wrong.

1. Although he's not the first to consider using a curved mirror instead of a lens, Newton was the first to successfully construct a telescope using this principle, a principle still used today in many telescopes

(Internal summary/Transition: Now that I’ve provided a few examples of Isaac Newton’s many inventions and discoveries, I will now talk about Isaac Newton’s many personal, social, and mental hardships.)

II. Main idea 2: After many years of hard work, little rest, and plenty of controversy, Newton's health failed suffering some mental illnesses and his theories being rejected by many scientist of his time.

A. He suffered his second nervous breakdown in 1693. He also suffered recurrent attacks of depression, a mental illness he must have suffered from throughout most of his life.

B. Although he engaged in arguments with scientists who dared dispute the correctness of his ideas, he acquired more admirers than critics, both inside and outside the English scientific community.

1. Newton eventually won acceptance because his theories produced better practical results. For instance, his theory correctly predicted the return of Halley’s Comet.