Hence, it can create the machines of the future. In conclusion, magnets and magnetic fields are the next efficient source of green energy. A single pair of magnets have the potential to create perpetual motion thus producing unfathomable amounts of energy for up to 30 years! Not only can it create such powerful energy, but some magnets also have the ability to levitate off the ground and move efficients in any direction. The two concepts alongside the amplification of the Earth’s magnetic fields through iron core solenoids can change the way mechanical machines behave and work; machines work faster and better making more cars in a factory or vehicles will ride more efficiently saving hundreds of thousands of time and fuel per year.
Superconductivity is a property displayed by certain materials at very low temperatures. Metals and their alloys have been known to be superconductive (ex. Tin, aluminum) other materials that have also been found to be superconductive are ceramics which contain copper and oxygen atoms. Superconductors have a special property which is that they can conduct electricity without resistance which means that energy is not lost. Once in motion, energy can flow through a closed loop of superconductive material forever.
It involves the joining of metals without fusion or filler metals. Since FSW is essentially solid state, high quality weld is obtained, characterized with absence of solidification cracking, porosity, oxidation and other defects typical to traditional fusion welding. The peak temperature in the FSW process is generally of the order of about 80% that of the liquidus temperature of the material being welded. The joint produced in this process is asymmetric about the weld line, as the material in a highly plastic state flows differently at the two sides of the welded joint. Owing to the velocity difference between the rotating tool and the stationary work piece, the mechanical interaction produces heat by means of frictional work and material plastic deformation.
Superconductors research task What is a super conductor? A superconductor is an element or metallic alloy which when cooled below a certain temperature the material loses all electrical resistance. Therefore superconductors can allow electric current to flow without any energy loss due to no resistance. This type of current is also known as supercurrent. Due to the material has lost its electrical resistance the superconductor can carry a current indefinitely without losing energy.
Although the earth is always making more oil and natural gasses, some believe it is not a sustainable source of energy. The earth’s energy future cannot and will never be sustained by just one energy source. A secure energy future relies on a controversial source, nuclear reactors and an unpolished source, kinetic energy. Nuclear energy is ideal and very cost effective. As humans, we have nearly mastered the art of nuclear fission.
Nuclear energy is an alternative to using fossil fuels. Although nuclear energy is also nonrenewable, it has a much lower amount of air pollution, as well as a lower risk of affecting the climate through global warming. There are three main kinds of nuclear energy, nuclear fusion, nuclear fission, and radioactive decay. This report will explain how nuclear fusion works, as well as explaining the advantages and disadvantages of nuclear fusion. Nuclear fusion occurs when two or more elements are fused together.
Once in motion, electrical current will flow forever in a closed loop of superconducting material, hence the high demand of such a product. The development of superconductors has been a working progress for many years and some superconductors are already in use, but there is always room for improvement. In 1911, Dutch physicist Heike Kamerlingh Onnes first discovered superconductivity when he cooled mercury to 4 degrees K (-452.47º F / -269.15º C). At this temperature, mercury’s resistance to electricity seemed to disappear. Hence, it was necessary for Onnes to come within 4 degrees of the coldest temperature that is theoretically attainable to witness the phenomenon of superconductivity.
A metal in this state has very unique magnetic properties that are unlike those at normal temperatures. A superconductor is often referred to as the perfect diamagnetic. Diamagnetic, ideally, are a class of materials that do not conserve magnetic flux, but expel it. A superconductor is classified as a perfect diamagnetic because by all measurable standards the magnetic flux within the material is zero. Electrons have a wave-like nature so an electron moving through a metal can be represented by a plane wave progressing in the same direction.
To be used in a commercial fusion plant, laser technology would first have to greatly improve. Another option in Inertial Confinement is ion beams instead of lasers. The ion beams are much more efficient, but are still very experimental. The biggest problem is the beam's short span. An intense enough beam to cause the reaction only lasts about 10 nanoseconds.
Resistance of a Wire Investigation Resistance is to do with how easy it is for the electric current to flow through a material, e.g. a piece of copper wire. Some materials have virtually no resistance when they are cooled down to absolute zero, they are called super conductors. Mercury will do this. Materials like plastic, wood, polythene, ceramics and rubber have very high resistances so that it is almost impossible for electric currents to flow through them.