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1 day ago · The birth of relativity. To make it all work, Einstein realized there had to be some give-and-take. You can't just have length contraction — moving rulers shrink — on its own. You also need ...
3 days ago · To understand what happens when light waves interfere, it is helpful to recall that light waves are electromagnetic waves. Light waves exert electric and magnetic forces. The displacement of the wave at a point indicates the direction and relative magnitude of the force.
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3 days ago · A light wave, or electromagnetic wave, is a transverse wave; that is, a wave that oscillates in a direction perpendicular to the direction it is traveling in. We can describe these light waves as “sinusoidal,” which means that they look like a sine or cosine function.
5 days ago · Download. NEW YORK, NY — Perceiving something – anything – in your surroundings is to become aware of what your senses are detecting. Today, Columbia University neuroscientists identify, for the first time, brain-cell circuitry in fruit flies that converts raw sensory signals into color perceptions that can guide behavior. Their findings ...
4 days ago · The classical wave theory can trace its historical origins to the seminal works of Christian Huygens, Thomas Young, and Augustin Fresnel. To explain some of light’s observed properties, such as rectilinear propagation, reflection, and refraction, Huygens proposed a simple geometrical construction of secondary spherical wavelets with centers of disturbance located on a primary wavefront.
3 days ago · The process of light waves changing direction without the waves being incident at a boundary between regions with different refractive indices is called diffraction. Diffraction occurs when light waves pass through a gap or travel parallel to a surface and reach the end of the surface.
1 day ago · Schrödinger's equation inscribed on the gravestone of Annemarie and Erwin Schrödinger. ( Newton's dot notation for the time derivative is used.) The Schrödinger equation is a linear partial differential equation that governs the wave function of a quantum-mechanical system.
