What is so super about superconductors? Perhaps the fact that superconductors are materials that have no resistance to the flow of electricity. So they basically will conduct electricity without resistance when the material is at a very cool temperature. Resistance becomes undesirable because it produces losses in the energy flowing through the material. Resistance creates heat which is why‚ when the material is cooled‚ the resistance will no longer be an included factor in the flow of electricity
Premium Nuclear power Fossil fuel Energy
generators works on the principle that when a coil is placed in varying magnetic field‚ an emf is induced in the coil. Synchronous Generator consists of two main windings‚ the armature winding and the field winding. The armature winding is on the stator and the field winding is on the rotor. For a three phase generator‚ the windings of each phase of the armature are displaces by 120 degrees from each other around the inside periphery. The field winding is a coil which carries dc current and hence produces
Premium Magnetic field Electric motor
million people are infected yearly. Dengue is caused by any one of four related viruses transmitted by mosquitoes. There are not yet any vaccines to prevent infection with dengue virus and the most effective protective measures are those that avoid mosquito bites. When infected‚ early recognition and prompt supportive treatment can substantially lower the risk of medical complications and death. Dengue has emerged as a worldwide problem only since the 1950s. Although dengue rarely occurs in the continental
Premium Aedes aegypti Aedes Dengue fever
Greek food is an extremely popular dining option thanks to its fresh ingredients and healthy options. That’s why so many local residents in Astoria‚ NY flock to Telly’s Taverna. As Astoria’s favorite family restaurant‚ they offer a wide range of Greek food. If you’re new to Greek food‚ here are the basics on this tasty international cuisine from Astoria’s best family restaurant: • Origins: Greek food and its traditions date back thousands of years. In fact‚ some popular dishes such as lentil soup
Premium
Oregano’s uses the freshest ingredients when preparing food. It is said on their menu this disclaimer. I can’t say if that is credible but it sure does taste so. I ordered the chicken penne pasta with marinara sauce that was to die for. The aroma of the oregano and basil filled my nostrils when the waiter sat the plate in front of me. Before I could even place my fork up to take that first bite the waiter asked us if we wanted cheese. My friend declined his offer and the waiter seemed quite offended in a
Premium Pizza Italian cuisine Restaurant
steel. The stator consists of a primary excitation coil and a pair of secondary output coils. A fixed alternating current excitation is applied to the primary stator coil that is electromagnetically coupled to the secondary coils. • This coupling is proportional to the angle of the input shaft. The output pair is structured so that one coil is in-phase with the excitation coil‚ and the second is 180 degrees out-of-phase with the excitation coil. When the rotor is in a position that directs the available
Premium Alternating current Function Inductor
large grey dog covered by 7 large‚ red coils of construction paper. The subject takes up a majority of the piece standing on a soft‚ black platform‚ its paws are sinking in slightly the platform appears almost velvety. The background is black. There seems to be only a middle
Premium Dog
forces between superconducting magnets on board the vehicle and coils on the ground. The following is a general explanation of the principle of Maglev. fig. 1.1 1.1.1 Magnetic Levitation The "8" figured levitation coils are installed on the sidewalls of the guideway. When the on-board superconducting magnets pass at a high speed about several centimeters below the center of these coils‚ an electric current is induced within the coils‚ which then act as electromagnets temporarily. As a result‚ there
Premium Magnetic field Magnet Superconductivity
gentle‚ we do not like their company in our bed rooms though we like them in a garden. The mosquito is an unscrupulous enemy that attacks without waiting to be attacked. It stings anyone‚ whether he is the gentlest or the most dangerous man in the world. Because a mosquito is a beast of prey and is out for food‚ we wave it away even in a garden. Bees and wasps are comparatively gentler than the unscrupulous mosquito yet they exhibit a wild passion for revenge. If they are attacked by someone‚ even a mad
Premium Insect Noise Bee
magnets * Induction coil * Four plug-clip leads * Discharge tubes (Maltese cross‚ electric plates‚ rotating wheel‚ screen display) Theory: This experiment is designed to show you the properties of cathode rays as discovered by Sir William Crookes. Method: 1. Connect the power pack to the induction coil and set it to 6 volts. Adjust the points of the induction coil so that a stong steady spark is being produced. 2. Connect the terminals of the induction coil to the discharge tube
Premium Electromagnetism Electron Electric charge