Presentación de PowerPoint - ADDI - University of the Basque Country
... Batteries are one of the most determining energy storage devices due to their the wide range of sizes in which they can be manufactured, their ability to supply electrical power instantly, their portability and the option of single-use or multiple-use units. Among them, sodium-ion batteries are pres ...
... Batteries are one of the most determining energy storage devices due to their the wide range of sizes in which they can be manufactured, their ability to supply electrical power instantly, their portability and the option of single-use or multiple-use units. Among them, sodium-ion batteries are pres ...
Exploring ultracold trapped cesium Feshbach molecules
... 23 Na and 7 Li were condensed for the rst time in the lab [And95, Dav95, Bra95]. For this milestone in atomic physics the Nobel prize was awarded in 2001 [Cor02, Ket02]. Since then Bose-Einstein condensation has been in the focus of intensive research [Ing99]. The fundamental properties of BECs hav ...
... 23 Na and 7 Li were condensed for the rst time in the lab [And95, Dav95, Bra95]. For this milestone in atomic physics the Nobel prize was awarded in 2001 [Cor02, Ket02]. Since then Bose-Einstein condensation has been in the focus of intensive research [Ing99]. The fundamental properties of BECs hav ...
(001) and (110) Elèctrodes La Ca
... materials. Making use of these newly appearing oxides and of the techniques required to multilayer deposition and lithography, new devices have been designed and fabricated. Nevertheless, the functional properties of these devices, as well as those of the bare oxide films, appear to be highly sensit ...
... materials. Making use of these newly appearing oxides and of the techniques required to multilayer deposition and lithography, new devices have been designed and fabricated. Nevertheless, the functional properties of these devices, as well as those of the bare oxide films, appear to be highly sensit ...
Physics - Leaving Certificate Teachers Reference Handbook (PDF
... student investigates and verifies them at the laboratory bench. While experiments should be carried out as rigorously as the available apparatus will allow, the principles should be illustrated as simply as possible. For example, an acceptable value for the acceleration due to gravity can be obtaine ...
... student investigates and verifies them at the laboratory bench. While experiments should be carried out as rigorously as the available apparatus will allow, the principles should be illustrated as simply as possible. For example, an acceptable value for the acceleration due to gravity can be obtaine ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.