## Who Invented Boolean Logic?...

The Boolean logic (also known as Boolean algebra) is an efficient logic operations system that is very useful in studying various fields like computer science, electronics and digital electronics. The system became more popular when Claude Shannon used electric circuits and relays as an analogy for the Boolean algebra. Before we proceed with the applications of the system in search engine queries, database and digital electronic circuit design, it is best to know the person behind the invention of the Boolean logic. Historical Background of the System Who invented Boolean logic? Mathematician George Boole invented the logic operations system in the mid 1800s. He incorporated logic to the basic concepts of mathematics and determined the base information of Boolean algebra. His invention of the system was published in the paper that he released in 1847 entitled “The Mathematical Analysis of Logic.” The system played an essential role in the development of binary system by Claude Shannon, which became significant to computer science. Additional Information and Other Important Details There are three operators that are significant to the logic operations system, which are the ‘and,’ ‘or’ and not. The first operator is defined by the dot symbol. On the other hand, the second operator is defined by the plus sign. Finally, the third operator is defined by A with a line on top of the letter. In addition to operators, Boolean logic has properties that are similar with the usual set logic. Some of the properties associated with this logic operations system are associativity, commutativity, absorption and distributivity. The other properties of the system are complements, idempotency, boundedness, 0 and 1 are complements, de Morgan’s laws as well as involution. This special operations system is widely used in the field...

## Who Invented the Machine Gun?...

The development and history of the machine is complex, but the fact is that Hiram Maxim was the first one to invent and use a machine gun that was self powered. The American inventor showed off his work to the British Army in 1885. He had invented it a year earlier in 1884. The Early Years of the Machine Gun Prior to Maxim’s invention, inventors had begun experimenting with the idea of a continuous rapid fire gun. In 1718, James Puckle came up with the Defence Gun. It consisted of a revolver mounted on a cylinder base. It could fire 60 shots in seven minutes, but the cylinder had to be adjusted manually. Other early designs included the Wilson Agar’s Coffee Mill gun and the Billinghurst–Requa. Both were widely used during the Civil War. These firearms were important in the early history of the machine gun as it gave inventors an idea of what the design had to be like. The Maxim Machine Gun and Others This rapid fire weapon was invented by the American Richard Gatling in 1861. It was first used by the US Army in 1865 and it would also become popular with European armies. Tests by the British Army showed it could fire 600 shots in two minutes. Maxim’s invention (the Maxim Machine Gun) became popular because of its efficiency. It was able to fire 500 rounds every minute. The key was using the recoil to remove the used cartridge and set the new one in place. The history of the machine gun reveals the Maxim gun was bought by the British in 1889. A year later, the Germans, Italians and Russians started ordering Maxim’s machine guns. The success of Hiram Maxim’s weapon inspired others...

## Who Invented the DVD Player?...

The history of the DVD player and format is complex. But in simple terms, it emerged because the companies realized that a repeat of the Betamax / VHS rivalry would affect them financially. The first DVD players came out in November 1996 in Japan, developed by Philips. This invention can’t be attributed to one man. There is no clear data that say who exactly invented this device. Therefore, we can only say that Philips created the first DVD player. Other big companies started making their own players shortly after the Philips’ DVD player showed up. The first DVD player in the US was the Sony DVP S7000. It came out in March 1997. How the DVD Format Emerged In 1993, two formats were being touted to replace the CD. One was called the MultiMedia Compact Disc (MMCD). It was supported by Philips and Sony. The other format was the Super Density or SD. This format was backed by Toshiba, Pioneer, JVC and Time Warner. The SD group approached IBM and asked them to use the format for computer data storage. The MMCD group did the same thing. IBM decided to form the Technical Working Group (TWG) to resolve the situation. The group was composed of people from Microsoft, Apple and other major computer companies. In what would prove pivotal in the history of the DVD player, the working group managed to persuade the companies to use a single format. The MMCD and the SD were dropped; the DVD was adopted instead. As work on the DVD began, the companies decided to use technologies from both SD and MMCD formats. One of the technologies applied was EFMPlus, which made the disc more resistant to scratches and smearing. It also allowed...

## Who Invented Coffee?

Coffee is undeniably one of the most popular beverages today, which can be served both hot and cold. It is rich in caffeine, an ingredient known for its invigorating effects. It is produced widely in countries such as Colombia, Vietnam and Brazil. Aside from these valuable details, it is nice to know other interesting things about this special beverage including who invented coffee. The Invention of Coffee Who invented coffee? Based on historical accounts, the Ethiopians were the first to discover the ability of the coffee bean plant to energize human beings. Highlanders started to cultivate beans way back to the ninth century. When the Arabs decided to expand their trade, the beans have reached other places such as Yemen and North Africa. At that time, no one can stop the popularity of coffee, which then expanded to the European and Indian markets. Additional Facts and Other Important Information In 1587, Abd al-Qadir al-Jaziri compiled in his work entitled “Umdat al safwa fi hill al-qahwa” the different legal controversies as well as the history of coffee. Based on that particular work, a certain sheik named Jamal-al-Din al-Dhabhani was the very first individual who adopted coffee in the Muslim world. The beverage was widely used by the Sufis during that time in order to drive away sleep. From Yemen as the starting point, coffee found its way to Yemen as export. In 1554, the very first coffeehouse started somewhere in Istanbul. During that time, the beverage was not received well by the people. In fact, the conservative people during that period banned the drink in many places mainly because of its stimulating effect. In 1524, Ottoman Turkish Sultan Selim-I lifted the ban on coffee. From the Ottoman Empire, coffee reached...

## Who Invented Bubblegum?

Have you ever wondered who invented bubblegum? Perhaps, one way or another, you also found yourself thinking of the inventors of the products that most of the people get to enjoy nowadays. Take, for instance, bubblegum. Were you ever curious enough to know who invented bubblegum? If so, have it ever occurred to you that some of the early inventions were results of glorious accidents? Great Ideas Sometimes Results from Non-Intentional Blunders. It was the year 1928 when an accident in the Fleer Chewing Gum Company in Philadelphia took place. Little did the people there know that the blunder was going to come up with something genius that will forever change the notion of the world towards chewing gum. Perhaps, Walter E. Diemer, who worked at the company as an accountant for the Philadelphia chewing gum company, had nothing much to do one time that Diemer thought of playing around with gum recipes. According to Diemer, the concoction was supposed to be something else but the result of the mixed brew was otherwise– bubbly, absolutely different, and proved to be less sticky than other recipe results. They also found the new gum recipe to have a sort of resiliency that stretched easily than others. There Was a Need to Check if the Idea Would Work Wonders. Are you aware that great inventors usually start with a great idea and a vision and perseverance to carry it through? Well, that’s what Diemer got. To test the product and how the people would react to it, Diemer brought a five-pound glop of the mixed bubbly brew to a certain grocery store. Sure enough, true to Diemer’s belief, many loved the new recipe! And the new bubble gum product was sold out...
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