Saturation velocity is the maximum velocity a charge carrier in a semiconductor, generally an electron, attains in the presence of very high electric fields. When this happens, the semiconductor is said to be in a state of velocity saturation. Charge carriers normally move at an average drift speed proportional to the electric field strength they experience temporally. The proportionality constant is known as mobility of the carrier, which is a material property. A good conductor would have a high mobility value for its charge carrier, which means higher velocity, and consequently higher current values for a given electric field strength. There is a limit though to this process and at some high field value, a charge carrier can not move any faster, having reached its saturation velocity, due to mechanisms that eventually limit the movement of the carriers in the material. As the applied electric field increases from that point, the carrier velocity no longer increases because the carriers lose energy through increased levels of interaction with the lattice, by emitting phonons and even photons as soon as the carrier energy is large enough to do so. (Wikipedia).
Physics - E&M: Ch 40.1 Current & Resistance Understood (2 of 17) What is a Drift Velocity?
Visit http://ilectureonline.com for more math and science lectures! In this video I will define and explain what is drift velocity. It is the average velocity of the charges moving along a conductor current. A positive charge will travel in a conductor with the electric field in a rather
From playlist THE "WHAT IS" PLAYLIST
Instantaneous Velocity Using Limit Definition of Derivative
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Instantaneous Velocity Using Limit Definition of Derivative . In this video, I find the instantaneous velocity of a particle using the limit definition of a d
From playlist All Videos - Part 2
Instantaneous Velocity, Definition of Derivative
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Instantaneous Velocity, Definition of Derivative. In this video, I use the definition of the derivative to find the instantaneous velocity of a particle. I f
From playlist All Videos - Part 3
From playlist Sect 2.7, Definition of Derivative
Physics - Mechanics: Gravity (14 of 20) Orbital Velocity
Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to calculate the orbital velocity at various heights.
From playlist PHYSICS 18 GRAVITY
Velocity Function Graph Application: Height Up/Down, Acceleration Incr/Decr
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From playlist Higher Order Differentiation
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This videos explains how to determine the velocity that an object, one meter above the Earth's surface, must be projected horizontally so that it will go all of the way around the Earth and come back to the same place. Calculate orbital velocity one meter above the Earth's surface. The o
From playlist Gravitation: Orbital Velocity, Orbital Period, Potential Energy, Kinetic Energy, Mass and Weight
What is Velocity? - Full Concept of Velocity - Physics | Don't Memorise
What is velocity? How is the velocity & acceleration related? Watch this video to understand the concept of Velocity in physics. Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and
From playlist Physics
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From playlist General Mechanics
Status of experiments and simulations on scaling problems in turbulence - Katepalli Sreenivasan
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From playlist Mathematics
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From playlist Discrete
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MIT 8.421 Atomic and Optical Physics I, Spring 2014 View the complete course: http://ocw.mit.edu/8-421S14 Instructor: Wolfgang Ketterle In this video, the professor continued to talk about atom-light Interactions and started to discuss line shifts and broadening. License: Creative Common
From playlist MIT 8.421 Atomic and Optical Physics I, Spring 2014
Convective Dynamos at Infinite Prandtl Number by David Hughes
GdR Dynamo 2015 PROGRAM LINK: www.icts.res.in/program/GDR2015 DATES : 01 Jun, 2015 - 12 Jun, 2015 VENUE : ICTS-TIFR, IISc campus, Bangalore DESCRIPTION : Dynamo or self-induced magnetic field generation in nature and laboratory is a very important area of research in physics, astrop
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Leslie Smith: "Fast-Slow Coupling in Atmospheric Flows with Water"
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From playlist Stanford PULSE Institute
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From playlist Fifth Bangalore School on Population Genetics and Evolution (ONLINE) 2022
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From playlist Mathematical Physics
Bertrand Maury: Mathematics behind some phenomena in crowd motion: Stop and Go waves and...
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From playlist Mathematical Physics
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From playlist New Physics Video Playlist
The life history of a raindrop by Rama Govindarajan
DATE: 29 July 2017, 11:00 to 13:00 VENUE: School of Sciences, Jain University, Bengaluru I will begin my talk with a brief description of the kind of fluid dynamical problems we study in our group. I will then focus on one problem : asking how raindrops and turbulence interact with each
From playlist Einstein Lectures