This website uses cookies to ensure you have the best experience. Learn more

How To Control Heat Flow With A Magnet?

631 words - 3 pages

In a quirky quantum-mechanical connection, a magnetic field can control the flow of heat across a loop of wire. The heat is carried by quantum waves of electrons, and waves traveling around the loop overlap to bolster or limit the flow depending on the strengths of the magnetic field threading the loop, a pair of physicists predicts in the 15 April PRL. Preliminary experiments confirm the prediction. Curiously, even as electrons shuttle heat across the little device, no electrical current flows through it.For decades, physicists have known that a magnetic field can affect the flow of electricity through a wire that splits and rejoins to form a ring resembling a traffic circle in the middle of a road. Known as the Aharonov-Bohm effect, the phenomenon arises because each electron is described by a quantum wave that splits, so that half of it flows around one side of the ring and half flows around the other side. When the two waves recombine on the far side of the ring they can overlap peak-to-peak to maximize the current, or peak-to-valley to minimize it.How the waves line up depends on the strength of the magnetic field threading the loop. The field shifts the peaks in the waves going around the two halves of the ring by different amounts. Bizarrely, the field can shift the waves even if it is confined to the hole in the ring and does not extend into the metal through which the electrons flow. Thanks to quantum mechanics, the electrons feel the effect of a field that they never travel through.But in some ways electrons also behave like particles, so they can convey energy and, hence, heat, as they rattle from the hotter end to the colder end of a wire. And a magnetic field can affect the heat flow through a wire with a loop in much the same way the field can affect the flow of electricity, calculate Zhigang Jiang and Venkat Chandrasekar of Northwestern...

Find Another Essay On How to Control Heat Flow with a Magnet?

Adding Additional Heat To A Home

661 words - 3 pages quicker and easier way to heat a home. There is never any work required, never a smoky smell, and they are not as dangerous as fires. The main difference between the two is the cost. A person may not have enough money to buy gas logs. A person can get by with the wood-burning stove. Gas logs and wood burning stoves are both effective ways of adding heat to a home.


889 words - 4 pages images and values.In her daily life, although she can stand TV, sometimes she can complain because she has difficulties to shove her kid in front of the TV. They say white lies to their kid! Also she knows that by learning about TV and growing up with it, provides children with a form of cultural literacy that they will need, that will tie them to their friends and their generation and help them understand their place in the world.The ability to be

How to Communicate with a Fish

1368 words - 6 pages attention was activated. Now it’s okay, if you want to be on the safe side of the fence, so here’s how to place one on your line. With the tip of your finger push the bottom of the bobber, letting the small hook on top stick out; now lace it on your line. You can set it to the depth for your bait by moving it back and forth on the line. The time has finally come to use the right bait. If you come from the South, the only thing better than a minnow is

How to Replace a AOD with a Ford T5 Transmision

1849 words - 7 pages How to Replace a AOD with a Ford T5 Transmision Is your AOD giving you trouble? Want to get rid of that sludge box forever? Why don't you do an AOD to T5 swap! Finally, a place where you can get the low down on exactly what it takes to convert from an AOD to a Ford T5 transmission, step by step. First, lets look at what you'll need for the conversion. Note: The parts listed are for a T5 or T5Z transmission. Swapping to an aftermarket

Experiment to investigate the heat released during a displacement reaction

1671 words - 7 pages 22 44.5 45.5 24.5 23.5 24100 20 22 46.5 49 26.5 27 26.75AnalysisFrom the results, it can be seen that the greater the concentration, the greater the amount of heat released during a displacement reaction. To start with, at 0%, no heat was given off. Then at 20% there was an average change of 11oC. At 40%, there was an average change of 17.25oC, and

The Columbine Influence: How a school shooting affected a nation, from gun control to pop culture

2860 words - 12 pages the nation. It has been 14 years since this tragedy and even now the word Columbine is synonymous with school shootings. The subsequent days, months, and years since this attack have proven that the Columbine massacre has influenced the United States in many areas of our everyday lives including school policies, anti-bullying programs, gun laws, and even popular culture. Thought to have been planned around a year in advance, Harris and Klebold

How to Have a Better Relationship with Coworkers

1155 words - 5 pages After yesterday’s class, I have thought a lot about my attachment style, and how I relate to others in a professional setting. I think, that for a very long I have removed myself from having relationship with people I work with. Not to say that I haven’t been available, but I definitely have had my guard up. I do not trust people, and although I am openly out as a gay woman, I am consistently questioning the way people relate to me based on my

How to Handle an Argument with a Woman

883 words - 4 pages speaking, is the leader of the relationship. Therefore he is responsible for many situations, including handling arguments properly with his significant other. It is much better to come out even and with better feelings towards each other than to be angry at the fact that she won the argument. Handling an argument properly with the female can save one’s relationship by making things smoother. By handling an argument properly, a guy can save his

How to Cope with Conflicts in A Romantic Relationship

1328 words - 5 pages Campbell, Simpson, Boldry, & Kashy (2005) said romantic relationships has the similarity to riding roller coasters because of its amazing highs and lows. In certain relationships, these types of roller coaster events occur on a daily basis with their romantic spouse. Latest research states “Perceptions of daily relationship events strongly color how individuals construe their romantic partners’ underlying motives and intentions and that these

How to Control Time in the Workplace

1079 words - 5 pages production, he would increase the speed of the assembly line. If a worker was not able to keep up, he would fire them and replace them with someone else. One consequence was that the work was monotonous and did not allow for any creativity or individualism. The control the assembly line gave Ford is widely used in contemporary companies. For example, McDonalds uses an assembly line for cooking and making the food and regulate how everything is

How to Deal with Grief

1014 words - 5 pages Death is something that many people have a hard concept grasping. The fact that a loved one can be there one second and then the next second, they’re not. Everyone will deal with this at some point in their life. People grieve in numerous ways˗ some people convey a facade and go about their lives while for others, it’s difficult to make it through the day. My hope is that someone will sincerely listen to the words I have to say and know that

Similar Essays

How To Control A Hot Air Balloon

568 words - 3 pages keeps it moving up.Steps to control a hot air balloon:1.To move the balloon upwards: the pilot opens up the propane valve which lets the propane flow to the burner, which in turn fires the flame up into the envelope. It works the same way as a gas grill, the more you open the valve, the bigger the flame will be to heat the air, the faster the balloon rises.2.To move the balloon downwards: the “parachute Valve” at the very top of the balloon

How To Control Overfishing A Market

1686 words - 7 pages not stop. This essay will discuss how overfishing can arise in a market, how the government can intervene to result in an optimal level of fishing. Finally we will compare policy options. People have engaged themselves in fisheries for thousands of years. Over the years the capital and labour in the fish industry has grown, which led to a higher productivity. Simultaneously with an increase in oceanic navigation caused this a grow in the

How Heat Is Transfered To The Atmosphere

1181 words - 5 pages heat. Specific heat refers to the amount of heat necessary to raise the temperature of 1 gram of a substance one degree Celsius. Sensible heat is the heat acquired by transfer from an object of higher temperature. These various types of heat energy can be transferred in different forms such as conduction, convection and radiation. Conduction is the transfer of heat from one molecule to another within a substance. How fast this heat

Adding Additional Heat To A Home

666 words - 3 pages stoves.Gas logs are obviously the quicker and easier way to heat a home. There is never any work required, never a smoky smell, and they are not as dangerous as fires. The main difference between the two is the cost. A person may not have enough money to buy gas logs. A person can get by with the wood-burning stove. Gas logs and wood burning stoves are both effective ways of adding heat to a home.