Recent Entries
Who Invented the Quadratic Formula?

Who Invented the Quadratic Formula?...

Solving complicated mathematical problems is done by using complicated formula—like a quadratic equation. Many branches of mathematics and science made major breakthroughs because of it. Thus, many are curious who invented the quadratic formula. The Babylonians One of the earliest and progressive civilizations was the Babylonian civilization. They were known to have used quadratic equations in a limited sense. They developed a crude method of doing this, but with a severe lack of formula usage, especially how to manipulate and transpose equations. So the person who invented the quadratic formula could not have come from them. Brahmagupta An Indian national from Brahma-Sphuta-Siddhanta used negative numbers in solving equations in 628 B.C. or in the 7th century. This mathematician, Brahmagupta, is considered to be the first man who invented the quadratic formula as modern people know it today. However, because his work was not known to mathematicians in Europe in the 19th century, some are of the opinion that he was not the first quadratic formula maker. Bhaskara Bhaskara was another Indian mathematician who dealt with complicated formula with zero-digits. He was acknowledged by mathematicians in Europe in the 12th century, and thus considered by many as the man who invented the quadratic equation. He even incorporated negative roots but cautioned on too much use of the negative value. He said it was inadequate and unacceptable to many. However, since he came later than Brahmagupta did, not all mathematicians agree that he was the first quadratic formula maker. Al-Khwarizm The kingdom of Arabia has a candidate in Al-Khwarizm as far as complex mathematical equations are concerned. He also used these formula earlier than Bhaskara did, using it as early as the 11th century. And furthermore, mathematicians in Europe were aware...
Who Invented Zero?

Who Invented Zero?

Few persons ever sit down and think about numbers and where they come from; it is just one of those things that we take for granted. Even if a person does wonder where numbers come from, the typical answer is that numbers originated with Roman numerals, but there are records of numbers being used as far back as 6000 BCE; however this only refers to numbers starting from 1, what about the number zero, where did it come from? The history of the zero is different from that of other numbers as ancient numerical systems did not have a zero, and a space was used where a zero should be. So let’s talk a little about the number zero and how it got into the numerical system. Where Zero Came From There are a lot of different stories about where the number zero comes from; one story says that the zero was first used as a number in India in the 9th century AD by Indian mathematician Aryabhata. It is also said that Indian scholar Pingala along with his fellow scholars used the Sanskrit word ??nya to refer to the number zero. Another story says that the number zero was invented by the Mayan civilization for use on their calendars, while yet another story claims that the zero dates back to 300 B.C. and was invented in Babylon. In the European society there is no evidence of the number zero being used until after 800 AD by the Arabs who were coming to trade with the Europeans; the name zero was also derived from the Arabic language. By 130 AD Ptolemy was using a small circle with a long over-bar to represent a zero; this symbol was used by...
Who Invented the Pencil?

Who Invented the Pencil?...

Some kids would say in jest that Mr. Pencil invented the pencil. However, to correctly answer inquisitive young minds who keep wondering who invented the pencil, here are some facts. The First Pencil Was a Failure The first attempt to invent a pencil was not successful. It was made of powdered or pulverized graphite. The result was a poor quality pencil that easily broke. Graphite and clay should be mixed well to produce a proper kind of pencil. This was done by the man who invented the pencil properly. All quality pencil makers today, owe it to the first pencil maker who perfected the right formula for it. A French Army Officer Invented it In 1795, a French officer belonging to the army of Napoleon invented and patented the first quality pencil on earth. Nicholas Jacques Conte or simply NJ Conte discovered that ground graphite, when mixed with the right kinds of clay, produced the best lead for pencils. Pencils do not really contain lead. The black thin material in pencils is a mix of graphite, carbon, and clay. NJ Conte, the first pencil maker, turned graphite into powder. Then he mixed it with moist doughs of clay and pressed the thing to make thin sticks. He then cooked it in a kiln. This man who invented the pencil, outdid his German counterparts. Faber Pencils Later, the Faber family took it from there and produced quality pencils using the Conte formula. The same formula is used worldwide today. The writing implement was not named after NJ Conte. It was taken from the Latin word, “pencillus”. It means “little tail”, probably referring to the pointed lead tip. In those times, pencillus was used to refer to fine, pointed brushes before...
Who Invented Chess?

Who Invented Chess?

Chess is one the most complex things that man has ever made. It is said that the number of combination of moves possible in chess far outnumber the number of stars in the universe. It may be an easy game to learn but it is hardly arguable that it is a game that only gifted people with years of practice can master. With the game’s complexity, one would really wonder who invented chess since it is very much apparent that it is a cut miles above other board games and past times that appeared across the history of man. To answer who invented chess, one must travel through its history to know its development. The earliest form of chess appeared in India in the sixth century B.C. It is why one could consider the Indians to be the people who invented chess since its history started in India. This does not mean that this early form of chess was near to the one we play today however. In fact, one can see that it is nowhere near close just by learning that the earliest form of chess is played by four players. This early form however, introduced the different pieces that correspond to different ranks which makes it a clear ancestor of the modern chess. From India, the said prototype of chess reached Persia, which is modern-day Iran. It is where the chess terms check and checkmate originated from as the Persians greatly modified the game, making it closer to what we are playing today. The Persians may not be candidates for being the people who invented chess but nevertheless, they contributed greatly to its development by modifying the game and by being a transit point through which chess...
Who Invented DNA Fingerprinting?

Who Invented DNA Fingerprinting?...

DNA fingerprinting (also known as DNA typing) is a special technique used to identify individuals based on their DNA profiles. One of the important uses of this technique is to provide reliable and credible evidence in courts. Other uses of the technique are for identifying one’s paternity and maternity as well as for personal identification. In several countries, the national government has DNA databases, which contain the DNA structures of citizens. To know more about this technique, let us take a look at the history of DNA fingerprinting. History of DNA Profiling Who invented DNA fingerprinting? DNA profiling was invented by scientist Sir Alec Jeffreys in his laboratory at the University of Leicester in Great Britain in 1985. The reason behind the invention of the technique is to identify which parts of the DNA sequences are different from an individual to another. However, at this time, the technologies that they can use to determine the sequences were limited. In this regard, Jeffreys only found small differences in the sequence when in fact; there are numerous variable sequences in the DNA. Jeffreys continued searching for techniques that can be used to identify all the varying sequences named as minisatellites. In order to succeed, he created a special probe that would be used to check if the minisatellites would react with a myoglobin gene. To do the experiment, he got DNA samples from his parents. On September 10, 1984, Jeffreys saw an inheritance pattern between the samples. He found out that DNA fingerprinting is a highly efficient technique that can be used to identify one’s paternity as well as maternity. He reported his findings in lectures and reports. He also published research at the Nature magazine about the technique. Two weeks...
Who Invented the Piano?

Who Invented the Piano?

One of the highly popular musical instruments, the piano is versatile enough to be used as an accompaniment, as part of chamber music as well as ensembles. Aside from these interesting qualities, there are much more to learn about it including its history. To understand the historical aspect of this important musical instrument further, it is good to know who invented the piano. The Invention of the Piano Who invented the Piano? Bartolomeo Cristofori , who was once a maker of musical instruments in Italy, was credited for the invention of the modern piano. He lived from 1655 to 1731. He developed the instrument some time in the 18th century, when he worked as the Keeper of Instruments for Prince Ferdinand Medici. Furthermore, he perfected the complicated mechanical aspects of the piano design. Aside from this, he was also credited for inventing other instruments, particularly the oval spinet and the spinettone. Additional Facts and Other Interesting Details Until now, three of the original pianos created by Cristofori are in existence, all of which dates back as far as the 1720s. The first one is dated 1720, which is currently found in New York, particularly at the Metropolitan Museum. The second one is dated 1722, which is in Rome, specifically at the Museo Nazionale degli Strumenti Musicali. The third one dates back to 1726, which is situated at Leipzig University’s Musikinstrumenten-Museum in Germany. The different types of piano include the grand piano, the upright piano, the studio piano and the console piano. The grand piano is characterized by the horizontal arrangement of strings and frame. Meanwhile, the upright piano is also referred to as the vertical piano, which is more compact in terms of design. The studio piano is known...
Who Invented Bacon?

Who Invented Bacon?

A look at the history of bacon reveal that the word is likely derived from three sources. The French word bako, the Germanic word bakkon or Old Teutonic backe. All the words mean “back” in English, which is where bacon cuts are usually taken from. In the US the cut is from the pork belly. History During the Middle Ages bacon (or bacoun) was used to describe pork in general. It was around the 12th century that the phrase “bring home the bacon” originated. Legend says that a church in Dunmow, England promised to give bacon to any man who could swear to the church and God he hadn’t argued with his wife for a year. Thus, the man that was able to bring the bacon home to his wife was held to be a good individual. Whether this is really part of the history of bacon or not is uncertain. However the phrase has struck. The British and the Bacon By the 17th century, bacon had come to refer to the pork’s side cured with salt and not to pork in general. The Oxford Companion to Food refers to bacon as a product of the UK. Other accounts state that bacon wasn’t solely a British product. However the British system for making them was used in other countries. Other accounts say that preserved pork were part of the British diet for hundreds of years. By the 18th century, production of bacon in Britain had become widespread. According to some accounts of the history of bacon, John Harris of Wiltshire set up one of the first bacon curing shops in the country. The place has certainly become known for its production of bacon. Other Accounts Some claims that the...
Who Invented the Frisbee?

Who Invented the Frisbee?...

It may be interesting to discover who invented the Frisbee. Now one of the famous playthings to most of the children and adults in many countries, learning the earlier invention in history may be quite worthy to dig up. However, finding the answer is not really that easy. As such, just like many other earlier inventions, there are many who claim the credit of being the person who invented the Frisbee. The First Set of Pie Tins and the Initial Claims to Glory During this era, pies were made and sold by the Frisbie Baking Company in Bridgeport, Connecticut. There were lots of college students from various New England colleges who bought these pies. And it was said that the students later discovered that the empty pie tins can be used for play by tossing and catching it. Because of this tale, many of the colleges in the area tried to bag the credit for the person who invented the playing of Frisbee. They wanted to be the school of “he who was first to fling.” To get the claim, one of the colleges, Yale College, even mentioned a tale that in 1820, Elihu Frisbee, an undergraduate, was the real Frisbee inventor. It was said that Elihu grabbed a collection tray in the chapel and threw it across the campus – thus, creating the first Frisbee fling. However, this is not a true account since all the pie tins made in those times bore the words “Frisbie’s Pies” where the word “Frisbie” was later derived to name the toy. The Plastic Frisbee Version and the Other Inventors Together with Warren Franscioni, Walter Frederick Morrison, a building inspector in Los Angeles, invented another version of the Frisbee toy in 1948....
Page 1 of 3112345...102030...Last »