In physics, a dimensionless physical constant is a physical constant that is dimensionless, i.e. a pure number having no units attached and having a numerical value that is independent of whatever system of units may be used.For example, if one considers one particular airfoil, the Reynolds number value of the laminar–turbulent transition is one relevant dimensionless physical constant of the problem. However, it is strictly related to the particular problem: for example, it is related to the airfoil being considered and also to the type of fluid in which it moves. On the other hand, the term fundamental physical constant is used to refer to some universal dimensionless constants. Perhaps the best-known example is the fine-structure constant, α, which has an approximate value of 1⁄137.036.The correct use of the term fundamental physical constant should be restricted to the dimensionless universal physical constants that currently cannot be derived from any other source. This precise definition is the one that will be followed here. However, the term fundamental physical constant has been sometimes used to refer to certain universal dimensioned physical constants, such as the speed of light c, vacuum permittivity ε0, Planck constant h, and the gravitational constant G, that appear in the most basic theories of physics. NIST and CODATA sometimes used the term in this way in the past. (Wikipedia).
Dimensions (1 of 3: The Traditional Definition - Directions)
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From playlist Exploring Mathematics: Fractals
From playlist Courses and Series
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Motion in One Dimension with Constant Acceleration
This video provides a longer discussion about motion in one dimension with constant acceleration. Note: This video is created with much thanks to Jacob Bowman for use on PatrickJMT's channel.
From playlist Physics
Using Dimensional Analysis to Find the Units of a Constant
This video shows you how to use dimensional analysis to find the units for constants in physics and chemistry equations. For example, why are the units for the gravitational constant (G) newtons, meters squared over kilograms squared. Dimensional analysis in physics is an important tool t
From playlist Metric Units
Physics - Thermodynamics 2: Ch 32.1 Def. and Terms (9 of 23) What is the Gas Constant?
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From playlist PHYSICS 32.1 THERMODYNAMICS 2 BASIC TERMS
The concept of “dimension” in measured signals
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From playlist Dimension reduction and source separation
Momentum and Angular Momentum of the Universe
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From playlist Physics
Physics 2 - Motion In One-Dimension (1 of 22) Definition
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From playlist MOST POPULAR VIDEOS
Time Constant and the Drag Force
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From playlist JEE Physics Unit 3 - Laws of Motion and NEET Unit III - Laws of Motion
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Conservation of Momentum, part 5 - Lecture 4.5 - Chemical Engineering Fluid Mechanics
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Lectures for Transport Phenomena course at Olin College. This video describes the formal formulation for forced convection in external flows and shows how simple empirical calculations are made.
From playlist Lectures for Transport Phenomena course
Introduction to Chemical Engineering | Lecture 15
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Lec 4 | MIT 18.03 Differential Equations, Spring 2006
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Lec 2 | MIT 5.80 Small-Molecule Spectroscopy and Dynamics, Fall 2008
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From playlist MIT 5.80 Small-Molecule Spectroscopy and Dynamics, Fall 2008
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