Science 120P AP
... EMF – Electromotive force. A misnomer, since it is not really a force but a potential difference (voltage). It is defined as the potential difference between the terminals of a battery when no current flows. E=Vterm + Vr for a battery. With the discovery that electric currents produced magnetic fiel ...
... EMF – Electromotive force. A misnomer, since it is not really a force but a potential difference (voltage). It is defined as the potential difference between the terminals of a battery when no current flows. E=Vterm + Vr for a battery. With the discovery that electric currents produced magnetic fiel ...
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... 3. Understand the Electron quasi-momentum k . 4. Understand the difference of electron motion in k space and ...
... 3. Understand the Electron quasi-momentum k . 4. Understand the difference of electron motion in k space and ...
11. Sources of Magnetic Fields
... moment: they are little permanent magnets. At high temperatures (above the Curie temperature, which is 1043 K for iron ) these are oriented in random directions so the net magnetism is zero. But if they are cooled below the Curie temperature, most of them (not all) line up the same direction. That i ...
... moment: they are little permanent magnets. At high temperatures (above the Curie temperature, which is 1043 K for iron ) these are oriented in random directions so the net magnetism is zero. But if they are cooled below the Curie temperature, most of them (not all) line up the same direction. That i ...
11. Sources of Magnetic Fields
... moment: they are little permanent magnets. At high temperatures (above the Curie temperature, which is 1043 K for iron ) these are oriented in random directions so the net magnetism is zero. But if they are cooled below the Curie temperature, most of them (not all) line up the same direction. That i ...
... moment: they are little permanent magnets. At high temperatures (above the Curie temperature, which is 1043 K for iron ) these are oriented in random directions so the net magnetism is zero. But if they are cooled below the Curie temperature, most of them (not all) line up the same direction. That i ...
Investigation of smart fluid properties in secondary
... and actuators and possess more PC-like functions. This change does not only concern our devices, but also the materials used in them. Modern material science refers these as smart materials. It is difficult to give a good definition to these substances, because in many cases the type of use can make ...
... and actuators and possess more PC-like functions. This change does not only concern our devices, but also the materials used in them. Modern material science refers these as smart materials. It is difficult to give a good definition to these substances, because in many cases the type of use can make ...
Goal: To understand what Electric Fields are
... Inducing a current • There are two ways to have fun with magnetic fields. • The first involves a changing magnetic field (in terms of sign or magnitude). • Any time a magnetic field changes all electrons that are around it that are moved. • This creates a current in any metal object – such as a wir ...
... Inducing a current • There are two ways to have fun with magnetic fields. • The first involves a changing magnetic field (in terms of sign or magnitude). • Any time a magnetic field changes all electrons that are around it that are moved. • This creates a current in any metal object – such as a wir ...
Forces and Interactions Study Guide FI1
... FI4- I can use data to determine factors that affect the strength of electric and magnetic forces. Look at the data tables that recorded the results of two experiments. In Experiment 1 two electrically charged objects, with the same charge, are held varying distances away and the result is recorded. ...
... FI4- I can use data to determine factors that affect the strength of electric and magnetic forces. Look at the data tables that recorded the results of two experiments. In Experiment 1 two electrically charged objects, with the same charge, are held varying distances away and the result is recorded. ...
Dispersion relations for electromagnetic waves in a dense
... combined effects of the quantum electrodynamical (QED) field, as well as the quantum forces associated with the Bohm potential and the magnetization energy of the electrons due to the electron-1/2 spin effect. The QED (vacuum polarization) effects, which contribute to the nonlinear electron current d ...
... combined effects of the quantum electrodynamical (QED) field, as well as the quantum forces associated with the Bohm potential and the magnetization energy of the electrons due to the electron-1/2 spin effect. The QED (vacuum polarization) effects, which contribute to the nonlinear electron current d ...
Teacher guide Teacher guide: Turning Points in Physics
... discovery of the electron and the determination of e/m and e took the subject forward through important experimental work by Thomson and Millikan. Further work on electron beams led to support for relativity and the discovery of electron diffraction. Recent 'Millikan' experiments have unsuccessfully ...
... discovery of the electron and the determination of e/m and e took the subject forward through important experimental work by Thomson and Millikan. Further work on electron beams led to support for relativity and the discovery of electron diffraction. Recent 'Millikan' experiments have unsuccessfully ...
The Atom`s Ancestry s Ancestry
... No subtle cold can pierce and break their frame. Tho’ every compound yields: no powerful blow, No subtle wedge devide, or break in four. For nothing can be expose, No part destroyed by force; Or cleft without a void, And things that hold most void, When strokes do squeeze, Or subtle wedges enter, yi ...
... No subtle cold can pierce and break their frame. Tho’ every compound yields: no powerful blow, No subtle wedge devide, or break in four. For nothing can be expose, No part destroyed by force; Or cleft without a void, And things that hold most void, When strokes do squeeze, Or subtle wedges enter, yi ...
magnetic field strength, H
... Each electron in an atom has magnetic moments that originate from two sources: •One is related to its orbital motion around the nucleus; as a moving charge, electron -small current loop, -generating a very small magnetic field, -have a magnetic moment along its axis of rotation •The other magnetic m ...
... Each electron in an atom has magnetic moments that originate from two sources: •One is related to its orbital motion around the nucleus; as a moving charge, electron -small current loop, -generating a very small magnetic field, -have a magnetic moment along its axis of rotation •The other magnetic m ...
Condensed matter physics
Condensed matter physics is a branch of physics that deals with the physical properties of condensed phases of matter. Condensed matter physicists seek to understand the behavior of these phases by using physical laws. In particular, these include the laws of quantum mechanics, electromagnetism and statistical mechanics.The most familiar condensed phases are solids and liquids, while more exotic condensed phases include the superconducting phase exhibited by certain materials at low temperature, the ferromagnetic and antiferromagnetic phases of spins on atomic lattices, and the Bose–Einstein condensate found in cold atomic systems. The study of condensed matter physics involves measuring various material properties via experimental probes along with using techniques of theoretical physics to develop mathematical models that help in understanding physical behavior.The diversity of systems and phenomena available for study makes condensed matter physics the most active field of contemporary physics: one third of all American physicists identify themselves as condensed matter physicists, and the Division of Condensed Matter Physics is the largest division at the American Physical Society. The field overlaps with chemistry, materials science, and nanotechnology, and relates closely to atomic physics and biophysics. Theoretical condensed matter physics shares important concepts and techniques with theoretical particle and nuclear physics.A variety of topics in physics such as crystallography, metallurgy, elasticity, magnetism, etc., were treated as distinct areas, until the 1940s when they were grouped together as solid state physics. Around the 1960s, the study of physical properties of liquids was added to this list, forming the basis for the new, related specialty of condensed matter physics. According to physicist Phil Anderson, the term was coined by him and Volker Heine when they changed the name of their group at the Cavendish Laboratories, Cambridge from ""Solid state theory"" to ""Theory of Condensed Matter"" in 1967, as they felt it did not exclude their interests in the study of liquids, nuclear matter and so on. Although Anderson and Heine helped popularize the name ""condensed matter"", it had been present in Europe for some years, most prominently in the form of a journal published in English, French, and German by Springer-Verlag titled Physics of Condensed Matter, which was launched in 1963. The funding environment and Cold War politics of the 1960s and 1970s were also factors that lead some physicists to prefer the name ""condensed matter physics"", which emphasized the commonality of scientific problems encountered by physicists working on solids, liquids, plasmas, and other complex matter, over ""solid state physics"", which was often associated with the industrial applications of metals and semiconductors. The Bell Telephone Laboratories was one of the first institutes to conduct a research program in condensed matter physics.References to ""condensed"" state can be traced to earlier sources. For example, in the introduction to his 1947 ""Kinetic theory of liquids"" book, Yakov Frenkel proposed that ""The kinetic theory of liquids must accordingly be developed as a generalization and extension of the kinetic theory of solid bodies"". As a matter of fact, it would be more correct to unify them under the title of ""condensed bodies"".