Who Invented the Pencil Sharpener?

Who Invented the Pencil Sharpener?...

A look at the history of pencil sharpeners shows that the Frenchman Bernard Lassimone was the first to get a patent for pencil sharpeners in 1828. Following his invention, other designers made improvements and refinements. The Early Pencil Sharpeners Pencils had been invented before the sharpener and people used knives to sharpen them. It was a tedious process and the result was uneven. After Lassimone’s invention, Therry des Estwaux came out with a mechanical sharpener in 1844. It took a while before the devices were accepted. But by 1865 companies were already manufacturing pencil sharpeners. A company called Eureka filed a patent for a small sharpener sometime in the mid 1860s. By the 1880s, several companies started producing them in larger numbers. One of the most well known companies in the early history of pencil sharpeners was Eagle Pencil Company in New York. A Look at Early Pencil Sharpeners From the 1880s to the early 1900s, many kinds of pencil sharpeners were developed in Europe and America. The electric sharpeners came out around 1917, but other types were produced. 1916’s New Era Pencil Sharpener resembled a plunger. The pencil would be placed inside the device and press it again and again. This process sharpened the blade. Another unique device was the Babock Duplex Pencil Sharpener. The device was patented in 1900 and came with a rotary of 6 blades. The history of pencil sharpeners shows that it was operated in the following manner. When the pencil was inserted, the blades would rotate around it. The right hand operates the crank that rotates the blade. The left hand operates the metal bar. One of the earliest sharpeners was invented by Guhl and Hurbeck in 1897 in Germany. It was called...
Who Invented Algebra?

Who Invented Algebra?

Algebra. For most of us, it is one of the banes of school life. Many see it as an adverse course, an unnecessary complication for one’s academics. It is then not rare for students to joke about their contempt for the inventor of the subject. Well, it maybe a playful joke but it does lead to an important question: who invented algebra anyway? Now, some may not pursue the thought of finding out the creator of their much-hated subject but for those who will do, it will be a fruitful exercise as it will make one realize the importance of the role that algebra played in human progress. So who invented algebra? Most of us are accustomed with inventions having a definite inventor: a single individual, like Thomas Edison for the light bulb, or a specific group of people like Chinese for gun powder. This is not the case with algebra however. Asking who invented algebra will give you the Arabs who are widely credited for the creation of the said branch of mathematics but there are also those that believe the Babylonians are the ones that must be given credit for inventing the algebra. But where does this rift concerning the question who invented algebra come from? As can be seen from the word itself, algebra, which comes from the Arabic al-jabr, one of the basic operations discussed in the influential book made by Arabs about the subject, Arabs contributed a lot to the subject. So much was their contribution that only through the translation of their works did the West learned much about algebra. The modern word that is algebra came into being only when the book was translated from Arabic into Latin by a Western scholar...
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 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 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 the Distance Formula?

Who Invented the Distance Formula?...

The man who invented the distance formula must have been amazed by distances. And why not? He was a traveler. He was a scientist and a philosopher always seeking the meaning in life. Aside from being educated in Greece, the distance formula inventor traveled other parts of the world to learn from other civilizations. Pythagoras Many acknowledge that Pythagoras was the person who invented the distance formula. He was from Samos and born around 570 B.C. He traveled not just to Egypt and Babylon, but also to Arabia, Phoenicia, Judea, and India. He did this in search of knowledge. According to records, he was much amazed by what knowledge was available in Egypt. He was also fond of experimenting with numbers and later on ended up being the distance formula inventor. Pythagorean Theorem Vertical, horizontal, or diagonal distance can be solved using Pythagoras distance formula, or what is called “Pythagorean theorem.” The man who invented the distance formula based this on the dimensions of a right triangle or a 90 degree triangle. This triangle has three sides—the base, the height, and the hypotenuse, which is the diagonal side. If 2 sides have known dimensions the third unknown can be solved. Thus, to solve the distance from one point to a standing structure, and the dimensions for the structure height and the hypotenuse are given, the distance can be calculated. The formula for this is C squared is equal to A squared plus B squared. According to the distance formula inventor, C is the value for the base, A is the value for the height, and B is the value for the hypotenuse side. The man who invented the distance formula figured any unknown value of this equation can be...
Page 1 of 3123