Tru Physics

Author: Tru Physics

  • Magnetism

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    Introduction Magnetism is a physical phenomenon produced by moving electric charge that results in attractive and repulsive forces between objects. It is one aspect of the combined electromagnetic force and shares many similarities with electricity, which is why they are usually thought of together as electromagnetism. Magnetic Fields and Magnetic Force Magnetic fields are a…

  • Magnetic Resonance Imaging (MRI)

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    Introduction Magnetic Resonance Imaging (MRI) is a non-invasive imaging technology that produces three-dimensional detailed anatomical images. It is often used for disease detection, diagnosis, and treatment monitoring. It is based on principles of nuclear magnetic resonance (NMR), a spectroscopic technique used to obtain microscopic chemical and physical data about molecules. Basic Principle of MRI The…

  • Magnetic Force

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    Introduction The magnetic force is the force exerted between magnetic fields and moving charged particles. When a charged particle moves through a magnetic field, it experiences a force perpendicular to both its velocity and the magnetic field. The equation for the magnetic force on a charged particle is given by: where: Magnetic Force on Current-Carrying…

  • Magnetic Monopoles

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    Introduction Magnetic monopoles are hypothetical particles that carry a single, isolated magnetic pole – either a north pole or a south pole. In contrast, every known particle that carries a magnetic field has both a north and a south pole. The concept of magnetic monopoles arises from the symmetry in Maxwell’s equations and the concept…

  • Magnetic Field

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    Introduction A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength), so it is a vector field. Magnetic Force on a Moving Charge The force exerted…

  • Longitudinal Waves

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    Introduction Longitudinal waves are a type of wave in which the displacement of the medium’s particles is parallel to the propagation of the wave. They are characterized by alternating regions of compressions (areas where the particles are close together) and rarefactions (areas where the particles are far apart). Wave Parameters and Properties Wave Speed The…

  • Leptons

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    Introduction Leptons are a type of elementary particle in the Standard Model of particle physics. The term “lepton” comes from the Greek for “light” (in weight), reflecting the fact that leptons are generally lighter than other kinds of particles. Fundamental Properties Leptons are fermions, meaning they have a half-integer spin () and follow the Pauli…

  • Lenz’s Law

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    Introduction Lenz’s law is a fundamental principle in electromagnetism, stating that an induced electromotive force (or EMF) always generates a current that opposes the change in original magnetic flux. It is a manifestation of the conservation of energy applied to electromagnetic systems. The Law and Its Interpretation Lenz’s law can be understood in the context…

  • Length Contraction

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    Introduction Length contraction is a fundamental concept in the theory of special relativity. It describes the phenomenon that a moving object’s length is measured to be shorter than its rest length, along the direction of motion. Understanding Length Contraction Length contraction is a direct consequence of Einstein’s postulate that the speed of light in a…

  • Klein-Gordon Equation

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    Introduction The Klein-Gordon equation is a relativistic wave equation, related to the Schrödinger equation, and is a cornerstone of quantum field theory. It was developed by Oskar Klein and Walter Gordon in 1926. The Klein-Gordon Equation The Klein-Gordon equation describes scalar particles, such as mesons (quarks and antiquarks bound together) in quantum field theory. In…