One-dimensional Electromagnetic Particle Code: KEMPO1
... of electromagnetic fields E and B by solving Maxwell’s equations with the FDTD method. In Fig. 1, we plotted frequency ω and wavenumber k spectra of an electromagnetic component E z obtained by a run of the KEMPO1 code. The electromagnetic fluctuation is induced by the current densities due to the t ...
... of electromagnetic fields E and B by solving Maxwell’s equations with the FDTD method. In Fig. 1, we plotted frequency ω and wavenumber k spectra of an electromagnetic component E z obtained by a run of the KEMPO1 code. The electromagnetic fluctuation is induced by the current densities due to the t ...
ElectroMagnetic Induction
... the magnetic field circulates around each conductor. Since the current is in opposite direction along each rail, the net magnetic field between the rails (B) is directed vertically. In combination with the current (I) across the projectile, this produces a magnetic force which accelerates the projec ...
... the magnetic field circulates around each conductor. Since the current is in opposite direction along each rail, the net magnetic field between the rails (B) is directed vertically. In combination with the current (I) across the projectile, this produces a magnetic force which accelerates the projec ...
Physics 12 Electric Potential Notes
... First let’s examine electric potential energy. If a charged object is in an electric field it has electric potential energy - that is it has the potential to move in that field. Note that the potential energy it has could be used to… A non-uniform field, such as that provided by a point, is one whic ...
... First let’s examine electric potential energy. If a charged object is in an electric field it has electric potential energy - that is it has the potential to move in that field. Note that the potential energy it has could be used to… A non-uniform field, such as that provided by a point, is one whic ...
PH202-5D Test 2 (July 11, 2007)
... Reason: In forward bias, holes in p-type and electrons in n-type are driven by the battery toward the intereface of the p-n junction where they are combined. At the same time, the battery provides p-type with holes and n-type with electrons. As a results, continuous current flows. On the other hand, ...
... Reason: In forward bias, holes in p-type and electrons in n-type are driven by the battery toward the intereface of the p-n junction where they are combined. At the same time, the battery provides p-type with holes and n-type with electrons. As a results, continuous current flows. On the other hand, ...
Page 1 PES 1120 Spring 2014, Spendier Lecture 12/Page 1 Lecture
... J..Joules NOTICE: No absolute value signs! ...
... J..Joules NOTICE: No absolute value signs! ...
Phys. Rev. Lett. 101, 043002 (2008)
... without entering a domain where magnetic field effects due to laser radiation become important. Furthermore, these two limits are different, not equivalent as indicated by Eq. (2). The onset of magnetic effects sets a lower limit on where tunneling theories can be applied, and an upper limit on ...
... without entering a domain where magnetic field effects due to laser radiation become important. Furthermore, these two limits are different, not equivalent as indicated by Eq. (2). The onset of magnetic effects sets a lower limit on where tunneling theories can be applied, and an upper limit on ...
Synthetic electromagnetic fields for ultracold atoms
... In 1995, the first atomic Bose-Einstein condensate (BEC) was experimentally achieved by Eric Cornell and Carl Wiemann, when they cooled the gas of rubidium atoms to 170 nK. In the same year, the first sodium BEC was made by Wolfgang Ketterle. For these achievements, they together received the 2001 N ...
... In 1995, the first atomic Bose-Einstein condensate (BEC) was experimentally achieved by Eric Cornell and Carl Wiemann, when they cooled the gas of rubidium atoms to 170 nK. In the same year, the first sodium BEC was made by Wolfgang Ketterle. For these achievements, they together received the 2001 N ...
File - SPHS Devil Physics
... i. The gravitational mass of an object determines the amount of force exerted on the object by a gravitational field. ii. Near the Earth’s surface, all objects fall (in a vacuum) with the same acceleration, regardless of their inertial mass. d. A vector field gives, as a function of position (and p ...
... i. The gravitational mass of an object determines the amount of force exerted on the object by a gravitational field. ii. Near the Earth’s surface, all objects fall (in a vacuum) with the same acceleration, regardless of their inertial mass. d. A vector field gives, as a function of position (and p ...
MAT389 Fall 2014, Problem Set 5 (due Oct 23) Holomorphic functions
... 5.13 Show that the transformation z = g(w) = w + 1/w takes the boundary of Ω to the real axis, and Ω to the upper half-plane H. 5.14 Consider the function f (z) = ψ − iφ, where φ and ψ are the functions you constructed in Problem 5.12. According to Problem 5.5, f (z) is a holomorphic function on the ...
... 5.13 Show that the transformation z = g(w) = w + 1/w takes the boundary of Ω to the real axis, and Ω to the upper half-plane H. 5.14 Consider the function f (z) = ψ − iφ, where φ and ψ are the functions you constructed in Problem 5.12. According to Problem 5.5, f (z) is a holomorphic function on the ...
The Dot Product of Two Vectors
... two terms. Consider a mountainous terrain. At every point characterized by x y and z, there is an altitude associated with it. This illustrates a scalar field. Similarly, in a region, every location has a temperature associated with it. This is another case of scalar field. Except this time, it may ...
... two terms. Consider a mountainous terrain. At every point characterized by x y and z, there is an altitude associated with it. This illustrates a scalar field. Similarly, in a region, every location has a temperature associated with it. This is another case of scalar field. Except this time, it may ...
Magnetic Induction
... the magnetic field circulates around each conductor. Since the current is in opposite direction along each rail, the net magnetic field between the rails (B) is directed vertically. In combination with the current (I) across the projectile, this produces a magnetic force which accelerates the projec ...
... the magnetic field circulates around each conductor. Since the current is in opposite direction along each rail, the net magnetic field between the rails (B) is directed vertically. In combination with the current (I) across the projectile, this produces a magnetic force which accelerates the projec ...
Force of Hertz-Dipole on Stationary Charge
... was not used anymore and it evolved this kind of simple arrangement which is now known as HERTZ-Dipole. With this circuit HERTZ has shown the transmission of electromagnetic energy from one resonant circuit to an other in his class room. As theoretical basis for this experiment HERTZ used the MAXWEL ...
... was not used anymore and it evolved this kind of simple arrangement which is now known as HERTZ-Dipole. With this circuit HERTZ has shown the transmission of electromagnetic energy from one resonant circuit to an other in his class room. As theoretical basis for this experiment HERTZ used the MAXWEL ...
... Accurate modeling of electromagnetic (EM) effects is becoming increasingly important as higher magnetic field strengths are employed in MR systems. The interactions of the EM field with biological tissues at high frequencies require appropriate coil designs to improve image quality and to avoid adve ...
Field (physics)
In physics, a field is a physical quantity that has a value for each point in space and time. For example, on a weather map, the surface wind velocity is described by assigning a vector to each point on a map. Each vector represents the speed and direction of the movement of air at that point. As another example, an electric field can be thought of as a ""condition in space"" emanating from an electric charge and extending throughout the whole of space. When a test electric charge is placed in this electric field, the particle accelerates due to a force. Physicists have found the notion of a field to be of such practical utility for the analysis of forces that they have come to think of a force as due to a field.In the modern framework of the quantum theory of fields, even without referring to a test particle, a field occupies space, contains energy, and its presence eliminates a true vacuum. This lead physicists to consider electromagnetic fields to be a physical entity, making the field concept a supporting paradigm of the edifice of modern physics. ""The fact that the electromagnetic field can possess momentum and energy makes it very real... a particle makes a field, and a field acts on another particle, and the field has such familiar properties as energy content and momentum, just as particles can have"". In practice, the strength of most fields has been found to diminish with distance to the point of being undetectable. For instance the strength of many relevant classical fields, such as the gravitational field in Newton's theory of gravity or the electrostatic field in classical electromagnetism, is inversely proportional to the square of the distance from the source (i.e. they follow the Gauss's law). One consequence is that the Earth's gravitational field quickly becomes undetectable on cosmic scales.A field can be classified as a scalar field, a vector field, a spinor field or a tensor field according to whether the represented physical quantity is a scalar, a vector, a spinor or a tensor, respectively. A field has a unique tensorial character in every point where it is defined: i.e. a field cannot be a scalar field somewhere and a vector field somewhere else. For example, the Newtonian gravitational field is a vector field: specifying its value at a point in spacetime requires three numbers, the components of the gravitational field vector at that point. Moreover, within each category (scalar, vector, tensor), a field can be either a classical field or a quantum field, depending on whether it is characterized by numbers or quantum operators respectively. In fact in this theory an equivalent representation of field is a field particle, namely a boson.