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The Four Most Marveled Inventions – the Last 500 Years

Guest post. My name is Kandace. I’m from Orlando, Florida and I am new to freelance writing. I have an article I think you might be interested in. The article highlights some of the most marveled inventions from the last 500 years.

four most marveled inventionsInventions help make our lives easier. Over the course of history, thousand of incredible inventions have been made. This article will talk about some of the most impressive inventions within the last 500 years. These inventions include the optical lens, the refrigerator, the cell phone and the computer. These inventions have added tremendous value to our lives.


The Refrigerator

The household refrigerator, which stores and chills food, is a marvelous invention. The first refrigeration method was invented in 1748, by William Cullen at the University of Glasgow. This form of refrigeration evolved and later incorporated toxic refrigerants. In 1926, a Berlin family was found dead due to the leakage of methyl chloride. Albert Einstein, with former student Leó Szilárd, decided to solve this problem and invented an alternative design. Leó Szilárd and Albert Einstein may be considered the founding fathers of modern day refrigeration.


Optical Lenses

Throughout human history optical lenses have made an astounding contribution to several inventions, including the microscope – http://www.microscope.com/digital-microscopes/, telescope and eyeglasses. Optical lens are a truly incredible invention with a mysterious origin. The present method of reading through a lens predates Roman philosopher and statesman Lucius Annaeus Seneca, the Younger (4 B.C. To 65 A.D.) who mentioned using a glass globe of water to read Roman literature. In 1021, the convex lens was mentioned in “The Book of Optics” by author Alhazen who penned the title, which was then translated to Latin around the 12th century. This translation in 1284, assisted Italian inventor Salvino D’Armate to invent the first wearable eyeglasses. Then, In the 17th century, Anton van Leeuwenhoek, a Dutch scientist invented the microscope. In many of his microscopic observations made of the unfathomable inner life of biology, Leeuwenhoek reported his optical findings to the Royal Society of England.


The Cell Phone

The first claim on inventing the mobile phone was by inventor Charles E. Alden, who in 1906, claimed to have invented the “vest pocket telephone”. This device was never produced in large quantities and in 1973, the first official hand-held mobile phone was demonstrated by John F. Mitchell and Dr. Martin Cooper of Motorola. It weighed more than two pounds. Things sure have advanced since then!


The Computer

The modern computer has its humble beginnings, which originate in 1801, when Joseph Marie Jacquard improved the textile loom to utilize punched paper cards. These cards held a set of data instructions with a template image, which allowed the loom to weave intricate patterns. This form of programming became the basis and evolution of programming languages that gave rise to the invention of the modern day computer, which is used today for countless calculations.

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