It seems that He could rarely be mistaken. Benjamin Franklin was born on January 17th, 1706 in Boston, Massachusetts, to Josiah Franklin and Abiah Folger Franklin. Benjamin, who was the tenth child, of seventeen sisters and brothers, “the youngest son of a youngest son for five generations back” (Franklin). Benjamin was a smart child who loved to read Abiah and Josiah wanted Benjamin to be a clergyman, but due to financial issues they could not send Benjamin to college, so Josiah had him first apprenticed as a candle maker and then to his brother, James as a typesetter in a printing press. The books, papers and ideas he was introduced to in his brother’s shop set the young man on a path to greatness.
WHY? To examine what kind of environment would be needed to allow life to begin. THE GASES The gases they used were methane (CH4), ammonia (NH3), hydrogen (H2), and water (H2O). How did they simulate lightning? Sparks were fired between the electrodes to simulate lightning through the atmosphere and water vapor.
J. Robert Oppenheimer helped to reshape our world with his many scientific achievements including his work on the Manhattan project along with his contributions to education. His work as leader of the Manhattan project helped to redefine warfare, and he is thought of as the founder of modern theoretical physics. Julius Robert Oppenheimer was born on April 22, 1904 in New York City (“J. Robert Oppenheimer” American History). His family was wealthy as his father, a German immigrant, was a successful textile importer, and his mother was a painter.
FIREWORKS There is a lot of physics and chemistry involved in making fireworks. Their colors come from the different temperatures of hot, glowing metals and from the light emitted by burning chemical compounds. Chemical reactions propel them and burst them into special shapes. Here's an element-by-element look at what is involved in your average firework: Aluminum - Aluminum is used to produce silver and white flames and sparks. It is a common component of sparklers.
It used a spinning wheel that created sparks which then lit the gunpowder. Lastly, flintlock weapons were developed. These struck a piece of flint against steel to create a spark to ignite the gunpowder (Guns through the Centuries). Flintlock weapons were also the basis for modern day weapons. The small arms main impact on warfare during the Renaissance was that they had ousted the knights.
The flame throwers used a piston system to pump a sort of gasoline like substance out of a tube. At the end of the tube was a candle which would ignite the fuel. These made Chinese fortifications almost impenetrable until the Mongol invasion. The fire lance was the precursor to the gun. It was a short iron tube with a tiny hole at the end for the fuse.
Title : Rosalind Franklin and her contribution to the understanding of the DNA structure Thesis Statement: Rosalind’s passion for science and her production of the X-ray diffraction proved valuable to the science of the DNA structure. Rosalind Franklin, quoted by author Brenda Maddox as “the dark lady of DNA”, was born on 25th of July 1920. The Franklin’s were not among the wealthiest from northern Europe, but she came from one of the oldest Jewish families in England. The Franklins were successful businessmen who were an important part of a network called “the Cousinhood”. The Franklin ancestry went from successful watchmakers to shopkeepers to publishers and Bankers.
In the 1800’s major breakthroughs in welding were made. Acetylene, which was discovered by Edmund Davy was an important milestone in the history of welding since open flame allowed the manufacturing of intricate metal tools and equipment; Sir Humphrey Davy invented a battery-operated tool with the ability to produce arc between carbon electrodes. Later into the 1800’s a French scientist Auguste De Meritens fused lead plates together using heat created from an arc. It was a Russian scientist named Nikolai N. Bernardos however that secured the first British and US patents for and electrode holder. In the 1890’s one of the most popular welding methods was carbon arc welding.
How Do Photocopiers, Powder Paint and Precipitators Work? Photocopiers, powder paint and precipitators are all very useful, and work in a very specific way, static electricity is the base of this. Static electricity is a collection of immovable charges on an object or molecule. Static build up is caused by friction, when two insulating materials are rubbed together electrons are taken from one and moved onto the other. This leaves a positive charge on one material and a negative one on the other, the charge depends on the material.
Washington served as president for two terms, during which he accomplished many new things. Washington accepted Jay's treaty, which settled the arguments between America and the British. Washington also decided that the Bill of Rights should be added to the Constitution, agreeing that they should have Freedom of Speech, Freedom of Press, and Freedom of Religion. George Washington was a brave and intelligent man who fought for his country’s freedom and enforced that freedom as the first president of the United States; due to his accomplishments Washington is remembered as one of the greatest presidents of all time. Other presidents have impacted this country as well.