Among the different subjects you have to learn in life, familiarizing yourself with electricity is by far one of the most important. Almost everything of today is run by electricity and so it pays to get yourself knowledgeable about the basics like with electrical measuring tools.
Now, you’re not actually dealing with electricity altogether here but measuring tools. Although the latter uses electricity to work, it is essential that you make use of today’s technology to make your job easier for you to do. Before you have to measure things manually and sometimes you even fail to come up with a good or approximate result. The digital era however brought about a new means and dimension to measuring that you only to point here and there, flatten out something here and there and voila! Trying to this sort of thing without the conviences of digital tooling will bring bags under your eyes. You will come up with the approximate if not the most accurate results compared to what you can find and do before.
It would seem that electrical measuring tools are not important but they are. Fixing something in your house or your office or your barn perhaps would be easier with their help than doing it the manual way just like you do it before. There are a lot of shops today granting you access to electrical and electronic measuring tools which are easier and more convenient for you to use, just be sure that they properly train you on the dangers of electrical stroke and heart attack issues that result from accidental misuse. Besides that, today’s technology is not actually made to make you look far vintage or go about the Stone Age. It’s there for you to make use of it and make your life better, easier and more convenient for you to enjoy living more and not less.
Researchers from the University of Minnesota’s (UM) College of Science and Engineering are working with a new alloy material that they say is capable of turning waste heat — like the kind emitted from vehicle exhaust pipes or from air conditioning units — directly into electricity. Though still in its infancy, the technology has the potential to revolutionize the way heat is recycled, and it may one day offer individuals the ability to recycle an unlimited amount of heat into free energy.
In this article, researchers have found a way to turn waste into usable energy. It’s great progress, since of the major problems of the world right now is waste management. If we can turn waste into energy, then we’d not only have a solution to the waste problem, but we can also continually produce another stable source of energy for the future generation.
Researchers measured the light that is released by a solar cell when a laser is shone on it, and found that the degradation happens within the first few minutes. They also found that the degradation is reversible and prevented by quickly placing another layer on the solar cell. This makes the solar cell stable.
Solar cells are one of the most common sources of energy nowadays; in fact, many people and companies have started to use solar cells for their buildings and homes. Some people have claimed that this form of electrical generation can be cause for alarm learn more at mildstroke.net .Degradation of the cells might affect the solar energy community, especially now that it’s a booming business. Click here to learn more about the news.
Imagine owning a television with the thickness and weight of a sheet of paper. It will be possible, someday, thanks to the growing industry of printed electronics. The process, which allows manufacturers to literally print or roll materials onto surfaces to produce an electronically functional device, is already used in organic solar cells and organic light-emitting diodes (OLEDs) that form the displays of cellphones.
We’ve only seen it in movies, but now we’re a bit closer to those paper-thin screens and keyboards. This news article talks about the possibilities of “flexible electronics”. It’s an amazing progress in technology!
Learning about electric circuits is actually very interesting. It’s not just for the physics/science geeks, but learning on how circuits work is pretty helpful, especially if you’re a DIY person.
Electricity is generated from mechanical energy, which is transformed into electrical energy using a generator. It’s basically charges travelling through a conductor, usually copper wires. Electricity can come in many forms – it’s present in nature, in animals, in magnetic fields, and even in a nuclear level. As long as a generator converts another type of energy – a constant source of energy, at that – electricity would always be created. For more details on electricity, visit this site.
Electric Circuits and Currents
An electric current happens when electrons, or charges in general, are travelling through a conductor. Of course, these charges don’t travel just because they want to. A “driving force” is present, and this force is called voltage, which is technically known as the potential difference. Charges move from a place of high potential to a lower potential. These charges move only o n a complete pathway called the circuit. So, in a matter of speaking analogies, think of a water system. The pumps are the voltage that bring the water up, the water is the travelling charges/current, and the pipes are the circuit. Many these electrical concepts are simple movement and flows it reminds me of the internet and how links connect web pages or how information flows from one website to another. Visualizing this would be snap for los angeles based web design group , they had some cool infographics that showed flows and movements through schematics and diagrams. I’ve added some crude graphics that hope explain what I mean. Electricity like information is always flowing and moving especially when observed.
Parallel vs Series Circuits
There are two common types of circuits according to connection: parallel and series. A series circuit is a “straight-forward” circuit – charges only have one path to travel. Imagine a simple and complete toy train track – if one track becomes unassembled, the train can’t move forward anymore. There are no “alternate routes”.
The parallel circuit, on the other hand, has many “alternate routes”. Do you those track changers in toy trains? Similarly, a parallel circuit offers an alternate route for the current. It’s actually an ideal circuit, since if one “route” is busted (or experienced a short circuit), the current can still flow through the other routes.
For more information about parallel and series circuits, check out this video:
No, it’s not the band; these are actually types of current. DC stands for a direct current, and AC, alternating current. From the root words themselves, a direct current is, well, direct. Current flows only in one direction, and usually we see this from a battery. The current is also constant – meaning there are no fluctuations or changes in the amount of electricity delivered in a circuit. Think of it as a steady flowing river. Try not to get overwhelmed with the details from this analogy I can feel your sunken eyes getting deeper from all this technical information.
An alternating current, on the other hand, has an alternating movement of charges. Meaning, the charges move back and forth, or in two directions. This is usually the case for the electricity we get from power plants. Alternating currents can travel for long distances because it can carry immense amounts of electricity. The amount of current can also be regulated – meaning, the number of charges travelling could be increased or decreased. On a direct current, however, the current is steady and cannot be changed. The current can also only go so far until the power source (the battery) runs out.For more on AC/DC, click here
Electricity plays a huge part in our lives nowadays. Everywhere we go, we are surrounded by technology, which most forms are powered by electricity. With our increasing dependency on technology, isn’t it only fitting that we know how most of them work? We know that the electricity comes from power plants, but in a deeper level, do we even know what happens in an electric circuit?
Electricity is a form of energy that we get from transforming mechanical energy to something we can use for our appliances and gadgets. The mechanical energy comes from turbines in power plants. Once these turbines whir and work, electricity is created. For more information on how to generate electricity, visit this link. But how do we use this energy? This is where electric circuits and electric currents come in.
When electrons or charges move through a pathway (usually a conductor), an electric current is created. Technically, an electric current is the rate of the flow of charges per second. It is measured in Amperes, or more commonly known as amps, which is equivalent to a number of Coulombs per second. Think of it as water flow – the rate that water flows to your faucet is what amperes measure.
Of course, water cannot flow by itself in the pipes; it needs a “force” to push it towards the faucet. The best way to make something move is to bring it down, right? Meaning, if you have a ball sitting on top of a hill, the best way to move it is to tip it so it rolls down. This “force” that drives the charges to move in a current is called voltage. This, of course, is measured in volts. Voltage is the potential difference between two objects, technically speaking. Currents, like the example given above, move from an object with high potential energy to an object or place of a lower potential energy. If, for example, there is no potential difference, then there is no voltage. No current could be made. If, however, there is something between two objects that keeps on moving the charges such that a constant potential difference is made – therefore causing a constant current to occur – then this closed pathway is called a circuit. This is actually what happens in a battery. To know more about voltage and batteries, click this link.
So, as mentioned above, a closed pathway for an electric current to perpetually flow is called a circuit. Of course, there has to be a stopper for the electric current, thus we have the infamous on-off switch. A simple circuit is easy enough to understand – you just need a battery, some copper wires, a switch and a light bulb. The moment you connect the positive side and the negative side of the battery, charges begin to flow, thus a current is formed. Here is a video that explains more on the electrical circuit:
Electricity is a vital form of energy that we use in our everyday life. It’s very hard to imagine life without electricity, and yet it’s one form of energy that we tend to abuse. Where does all this energy come from anyway? And how do we generate electricity?
Electricity, technically, is the movement of electrons in a path called current. When there is a current, electrical energy is generated, and this powers our appliances, computers, air-conditioning, and lights up our bulbs. In order to create electricity, it needs another form of energy – usually mechanical energy. Generators transformed mechanical energy into electricity. Before, electricity was generated by hand. You can make a light bulb light up by manually spinning a machine, or smaller engines could be powered by an animal moving, or pulling at the device. But of course, this would not do. Alternate devices were made such that the mechanical energy could be supplied constantly, without tiring anyone or anything. To know more about generators, visit this site.
Engines were made, powered by fossil fuels and coal. But, as man looked around, he was slowly killing the environment by his machines. There arose a need to find alternate sources of energy, and not just coal and fossil fuels. And so, the power of nature was explored.
Windmills were the forerunners of harnessing the power of nature for electricity. Even before the “discovery” of electricity, people had been using the wind to power simple machines. The first windmills were in Europe, where people used them to grind corn and wheat. Eventually, people across the globe used the concept of windmills, first for agriculture, then later on as a source of energy. They were attached to generators, which then transforms wind energy into an electric current, powering machines and appliances. For more on windmills and their contribution, visit either this site or this.
Pretty soon, people realized that windmill plants couldn’t be placed just anywhere – specifically on places where there was virtually no strong wind to harness. So, people thought of other ways to produce mechanical energy. And they saw water’s potential. Running water seemed viable since it’s constantly running. Rivers were the first option. But some rivers don’t produce enough current to make the turbines run, so they switched to waterfalls. True enough, hydroelectric power plants boomed and many are powering large cities nowadays. For more information on harnessing hydroelectricity, click here. Meanwhile, here is a short video on hydroelectricity:
Nature in itself has unmatched potential; there are still areas of nature that are left untouched, and thus show much potential in harnessing energy. But of course, we need to take care that we don’t destroy any natural habitats for the sake of our short, mortal lives. After all, nature was here on the planet first before we came in the picture. We owe her so much more than just the lights we see each night, and the comfort we feel on those hot days.
Generators from power plants light up our homes and provide us with electricity to do most of our work at home, in school and at work. But where exactly does the electricity come from? And how do these generators work anyway?
Michael Faraday is famous for creating the very first generator. He also related the electricity with magnets. He produced an electric current by moving a coiled conductor through a magnetic field. He had a magnet moved inside a tube coiled with copper wire. He attached the apparatus with a galvanometer, or an instrument that measures an electric current. He discovered that when he moved the magnet in and out of the tube, the galvanometer shows an electric current. This is how he discovered electromagnetic induction. He went on with his studies on magnets. Eventually, he created a device that produced a steady current. He did this by rotating a copper disc between the poles of a horseshoe magnet. This device became the first generator, and until now, it’s the basis of most generators across the globe. Here is a video that shows a simple reconstruction of Faradays’ famous experiment:
For a simpler form of the generator, and a more detailed explanation, visit this informative site.
Generators, simply put, transform mechanical energy into electricity. The movement of Faraday’s magnet across the tube means that mechanical work needs to be done before a current can be formed. This work was created by engines. These engines power turbines, which is the most common form of generators. But the use of coals and fossil fuels to power the engines has been found to be destructive to the environment, so scientists and engineers tried to find other forces that could power these turbines. Different mechanical forces were explored, until nature itself was used.
At first, windmills were created to harness the power of the wind. The windmills’ rotation powered the turbines, and thus created electricity. But the winds are very unstable – there were times that the wind was so still, and power could not be created. A more stable and constant source was needed. And so, the powers of running water were discovered. Hydroelectric power plants became a boom. Plants, at first, were created near rivers. But soon, falls presented a much powerful source of constant mechanical energy. Many power plants nowadays run on hydroelectric power, which is not only friendly to the environment, but is also a constant source. Recent developments, however, explore the use of nuclear reactions, which have been proven to also release tremendous amounts of energy that can be harnessed and turned into electrical energy. Clickherefor more information on hydroelectric power plants, or here for information on nuclear power.
Whatever form of energy there is, technology continues to evolve, bringing us more and more sources of energy and more methods of translating energy into usable forms that are friendly to the environment and friendly to humans as well. And if not for Faraday, we might still be clueless on how to harness the amazing power of electricity.
In an age when technology is easy accessible and basically makes the world turn, it’s so hard to imagine a life without electricity. From the moment we wake up, we face technology and electricity; we’re so used to a life surrounded by electrical appliances that some might say it would be very hard to live without them. But, have you ever wondered where it all started? Where did electricity start making an impact in human life?
Around 600 BC, a man named Thales discovered that if he rubbed amber, he could attract tiny objects to it. This of course, baffled a lot of people; but now, we call this static electricity. In fact, the word electricity came from a Greek word that meant “amber”, in honor of this discovery. Unfortunately, Thales was the only one that seemed interested in the properties of amber. It wasn’t until the 17th and 18th centuries that extensive experiments were conducted to study electricity and find out more about it. William Gilbert found inspiration in Thales and started rubbing different objects together to create static electricity. He found that some objects were attracted, and some were repelled. He called this force “electric”, which was created by rubbing two objects together. Stephen Gray, who continued to work on this “electric” force, found out that some objects didn’t generate this force – objects like silk.
One of the giant leaps in the study of electricity is the creation of the Leyden jar. Two Dutchmen, Kleist and van Musschenbroek, created a jar with a nail, water and some metal in order to “trap” the electric force, hence study it more. It’s actually a very interesting story – how they made the Leyden jar and what they found out – and it could be found here.
The most famous experiment in electricity would probably be the one involving Benjamin Franklin. It was his fervent curiosity and his determination that drove him out one cloudy day, with a kite and a key tied to it, and tried out his little experiment. He was sure that lightning was a form of electricity, and he proved it when he received shocks from his kite experiment. He was also the one who came up with the idea that there were two forces at work – positive and negative – and that this force moved from positive to negative. For more on Benjamin Franklin and his kite experiment, click this or this.
Progress during that time was slow, compared to the progress of technology now. It was not until 30 years after that Charles Coulomb would develop Coulomb’s law, that says opposite charges attract and like charges repel; then it took some more decades before electrons were discovered, and the atomic structure of electricity was studied. But, towards the end of the 19th century, people were become more and more interested in electricity. Automobiles were created, along with aircrafts, and tons of machines that are powered by electricity. The rest, as they say, is history. Since then, technology and electricity have worked hand in hand, making human life easier and more convenient. Here’s an interesting video on electricity: