Essays on Michael Faraday

Gold Nanoparticles Article Summaries.

Original Article Summary: Turkevich, Stevenson, & Hillier, 1951. In their 1951 article, Turkevich, Stevenson, and Hillier explore the nucleation processes and growth of colloidal gold nanoparticles during synthesis under different methods. The paper explores the standard preparation methods of colloidal gold which all use a nucleating agent which usually comprises reducing agents that later form a mixed polymer with a chloroauric ion before reduction to the nucleus occurs. The authors of this paper explore gold colloids synthesis methods such as Bredig’s electrical arc synthesis, the Faraday method, and reduction methods using acetone, tannin gold solution, oxalic acid, Hydroxylamine hydrochloride, ...

This video highlights the development of theory of interaction of electricity with magnetism. A number of scientists were involved in understanding, interpreting and validating electromagnetism with simple experiments involving current and magnetic elements. During September 1820, Ampere investigated magnetic effects of repulsion/attraction between like/unlike poles. He developed theory of electro-dynamics related to magnetism as interaction of current elements. Laplace was skeptical of his ideas while some other scientists like Fernel started thinking on converse patterns. Some other scientists like Jean Fernel focused on theory of production of electricity by magnetism and production of currents in conducting metals. Jean Fernel ...

Today printing technology has advanced to the level of full automation. This is evidence with digital printing technology emerging that is capable of not only producing an entire newspaper but fold it as well. One of the latest developments in printing is the Xeikon 8000 which is capable of producing approximately 8.5 million pages every month. With such capability, it requires a single operator. Dye-sublimation printing is the technology preceded the Xeikon 8000 one. It produced high-quality photo prints, combining three color panels with a clear overcoat to transfer heat to a ribbon and emerged in the mid-1990s. The ...

Dept. Of Electrical & Computer Engineering Dept. Of Electrical & Computer Engineering

Abstract

Mobile phones have become part of our daily lives with continued technological advancement geared towards designing them to mimic computers (Suh, Lee, & Vu, 2014). This has created increased functionality in most of the mobile phones leading to increased power usage. The current mobile phones as well as the next generation mobile phones now require more energy in order to fully support their increased functionality for reasonable periods. Moreover, the research into long-life batteries seems to have reached its limits (Maeght et al, 2013). This therefore presents the need to ...

If someone has made an invention to make life easier or to alleviate one’s living condition then the security of the patent for that invention is needed. According to the World Intellectual Property Organization, a patent is an exclusive right of a person for producing something that offers a new solution to a problem. Furthermore, a patent provides the maker with protection for their invention, and this protection usually lasts for 20 years. One privilege of a person who has a patented invention is that the invention cannot be sold, distributed, used or commercially made without the inventor’s consent. This right is usually enforced ...

Introduction

A black hole is a region in space-time, the gravitational attraction which is so large that it can not leave even objects moving at the speed of light, including photons of light itself. The boundary of this region is called the event horizon, and its characteristic dimension - the gravitational radius. In the simplest case of a spherically symmetric black hole Schwarzschild radius is equal to it. Theoretically, the possible existence of such regions of space-time should be of some exact solutions of Einstein's equations, the first of which was obtained by Karl Schwarzschild in 1915. The exact inventor of ...

Abstract— Faraday's Law is used to estimate the magnetic field of the magnet from the maximum induced voltage. This paper presents the report of the experiment on Faraday’s Law of induction. In this experiment Faraday's Law and Lenz's Law are examined, along with the concepts of magnetic flux and conservation of energy. The experiment was carried out by using a wand having a coil at its end. This coil is made to swing through the magnetic field of a horse magnet. The induced EMF stated by Faraday and the reason for the minus sign added to it by Lenz has been ...

Abstract

The word technology may be in the talk of time for most individuals, however, little do they know what impacts all this development. The existence of visual systems, audio systems and other complex equipment all give credit to the early discoveries. Discovery of atoms, ions and later electrons simplified everything. It is from theses that energy was developed. One of the most promising techniques used by scientists is the charge to mass ratio of electrons. It helped in observing the nature of materials. This lab report aims at analyzing the Sir J. Thompson`s experiment of evaluating charge to ...

Abstract

The use of thermistors started when the scientists discovered that metals have a semiconductor property. The inventor of the first operating thermistor is Samuel Ruben. Thermistors are resistors which could vary their resistance with the change of temperature. The industry of thermistor rapidly increases due to its reliability and low price. Then, its uses became wider as more and more devices are installed by the thermistors. As the technology progresses, the use of thermistors in any devices and instruments also developed (Ametherm, np).

History

In 1833, Michael Faraday discovered that silver sulfide (Ag2S) has a semiconductor property. He observed it using the ...

Abstract

The discovery of semiconductor property of a metal began the development of thermistors (Lavenuta, np). Samuel Ruben invented the first practical thermistor (Electrotechnik, np), and since then, the demands of such technology increased because it is considered cheap and reliable. Today, there are many industries, devices and instruments that use thermistors. (Ametherm, np).

History

The semiconductor property of silver sulfide (Ag2S) was the first ever recorded NTC (Negative Temperature Coefficient) thermistor and was observed by Michael Faraday in 1833. However, because of the difficulty to produce thermistors, and its applications were less understood, the manufacturing of thermistors came only during the ...

Independent Learning

Introduction Independent Learning is a form of acquiring knowledge through the personal effort of an individual, where he or she sets specific strategies to acquire learning goals. The students have full freedom of the way the he or she defines its path of learning (Cassidy 989). The process involves sheer sense of critical evaluation and inquiry by taking responsibility of the subject being learnt. The teacher involved in this process plays the role of a facilitator. The concept of Independent Learning is normally evident in university setting, where the students have the liberty to choose courses and set independent ...

Abstract

Generation of electricity using turbine technology is very popular around the globe since most of the processes such as hydro energy are clean and renewable. Additionally, some do not pose a huge threat in human life and the environment. The traditional method of using turbine technology is very popular and wanted in many countries due to the economical cost of building and maintaining the generation plant. Additionally, the turbine technology is more efficient. This is because it can employ a number of fossil fuels, water, geothermal energy or wind to generate electricity. Hence, the country has a greater variety to choose from ...

Introduction

Wireless electricity conduction is a fascinating subject. Such technology is still in its early stages, but the importance of its development will be significant to humanity worldwide. Statistics indicate that the world population is increasing by the day. Many nations are constantly trying to improve the quality of living of their citizens. These trends only serve to reveal the growing demand for energy globally. Wireless electricity is a modern technological concept of transmission of electrical energy to devices without the use of wires. With this technology, it is be virtually possible to power or charge gadgets, without wiring them to a power ...

Wireless communication refers to transmission of data or signals via electromagnetic waves. In other words, it is a form of communication that does not involve the use of wires. Instead, radio and microwaves are used to transfer data or signal from one device to another. The first wireless transmission system was developed in early 20th century. This system used Morse code which was a combination of dots and dashes or long and short electric signals assigned to each letter of the English alphabet. The signals were sent and received via wires. This enabled transmission of text based information over a long distance. ...

The movie entitled Einstein’s Big Idea, produced by the PBS series Nova analyzes the implications of the theory of relativity, which came to a conclusion that mass and energy are the same thing, related by the formula E=mc2 . The two- hour program traces the 300 years of key developments culminating to Einstein’s revolutionary formula, featuring an easy to understand flow chart of the core concepts, and portraits of main participants. Starting from Michael Faraday to Einstein, Big Idea demonstrates systematically how these visionaries, piece by piece came up with a new theory about how the universe operates. Adapted ...

Michael Faraday was born on 22 September 1791 in the southern part of London. Due to his disadvantaged background, he was not able to attend full education only achieving basic literacy (Faraday 1). At the age of 14, he apprenticed under a local bookbinder. For the next 7 years, he educated himself by reading books on a wide range of subjects mostly scientific (Hamilton 23; Scientific papers). In 1812, at the age of 20, Faraday received some tickets for a series of lectures conducted by the eminent scientist Humphrey Davy of the Royal University of Great Britain. He attended four lectures and ...