Tag: Work Function
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Cathode
Introduction In the world of electricity and electronics, the cathode plays an integral role. Its function may seem straightforward, but understanding the complex physics at work within this humble component can unlock a deeper appreciation for its crucial place in the realm of electric current. The Basic Role of a Cathode In a device that…
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Anode
Introduction An anode is an essential component in many electrical and electronic devices. Its role in the flow of electric current might seem simple, but the underlying physics paints a complex and fascinating picture. The Basic Role of an Anode In a device that consumes electric power, like a battery or an electrolytic cell, the…
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Work Function
Introduction In the field of physics, the work function is a fundamental concept related to the behavior of electrons in a material. It represents the minimum energy required to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Definition and Expression The work function () is defined…
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Photomultiplier Tube
Introduction Photomultiplier tubes (PMTs) are a type of vacuum tube used to detect and amplify signals from individual photons. PMTs are known for their high sensitivity to light, fast response, and large amplification factors. Structure of a Photomultiplier Tube A PMT typically consists of three main components: Working Principle When a photon strikes the photocathode,…
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Photoelectric Effect
Introduction The photoelectric effect is a phenomenon in quantum physics in which electrons are ejected from the surface of a material (typically a metal) when light of a certain frequency or higher is shone upon it. This discovery provided key evidence for the quantum nature of light and was explained by Albert Einstein in 1905,…