1. Home
2. >> fine structure constant

# fine structure constant

May 25, 2019 · The fine structure constant, α, can be thought of as the ratio between the energy needed to overcome the electrostatic repulsion driving these electrons apart and the energy of a single photon

Get Quote Send Message

## We always bring quality service with 100% sincerity.

• ### what is the fine-structure constant? - physlink.com

The fine-structure constant is a unitless numerical constant - whose value is approximately equal to: 1/137. In fact the exact value of the fine-structure constant is: 0.007297351 +/- 0.000000006 . Accepted symbol for the fine-structure constant is Greek alpha ( )

• ### fine-structure constant | definition of fine-structure

Definition of fine-structure constant. : a dimensionless constant that is a measure of the strength of electromagnetic interactions of subatomic particles and that has an approximate value of 0.0073 or ¹/₁₃₇ —symbol α

• ### quantum mechanics - the fine structure constant - physics

The fine structure constant is given (in natural units) by. α = e 2 4 π, but, distinct from e, the fine structure constant is defined to be dimensionless. Thus if e is measured in units of charge, the fine structure constant is defined as. α = e 2 4 π ℏ c ϵ 0

• ### calculation of the fine-structure constant

The fine-structure constant α is a constant in physics that plays a fundamental role in the electromagnetic interaction. The value shown in (1) is according CODATA 2014. being e the mathematical constant e (the base of the natural logarithm). One of the solutions of this equation is: (3)

• ### physicists achieve best ever measurement of fine-structure

Dec 16, 2020 · The fine-structure constant determines the strength of the electromagnetic force, and is central in explaining a number of phenomena including the …

• ### the mysterious 137 – richard feynman

The numerical value of a, the fine structure constant, is given by the special case n 1 = 137, n 2 = 29. Thus a = a (137,29) = 0.0072973525318… The experimental value for a is a exp = 0.007297352533 (27), the (27) is +/- the experimental uncertainty in the last two digits

• ### why is137the most magical number? |howstuffworks

Nov 27, 2018 · The fine-structure constant is one of the key physical constants of the universe. "This immutable number determines how stars burn, how chemistry happens and even whether atoms exist at all," as Michael Brooks explained in a recent New Scientist article

• ### fine-structure constant| physics | britannica

In fine structure …a dimensionless constant called the fine-structure constant. This constant is given by the equation α = ke 2 /hc, where k is Coulomb’s constant, e is the charge of the electron, h is Planck’s constant, and c is the speed of light. The value of the constant α is 7.29735254 × 10 −3,… Read More; quantum electrodynamics

• ### fine structure constantby miles mathis

Chief among these is the number 1/137.03597, which is the fine structure constant. Feynman calls it the observed coupling constant or “the amplitude for a real electron to emit a real photon.” 1 But at a place like Wikipedia, you will find it listed under “fine structure constant.”

• ### calculation ofthe fine-structure constant

The fine-structure constant α  is a constant in physics that plays a fundamental role in the electromagnetic interaction. It is a dimensionless constant, defined as: (1)being q the elementary charge, ε0 the vacuum permittivity, h the Planck constant and c the speed of light in vacuum

• ### riemann hypothesis,fine structure constant, todd function

Sep 24, 2018 · The fine structure constant is a dimensionless physical constant α, given by where e is the elementary charge, ε 0 is vacuum permittivity, ħ is the reduced Planck constant, and c is the speed of light in a vacuum. Its value is roughly 1/137

• ### the littleconstantthat couldn't? | physicscentral

The fine structure constant, alpha (α), describes how electromagnetic radiation affects charged particles. It has the numerical value 0.007297351, with an uncertainty of 6 in the last decimal place, and as such is one of the best-measured numbers in physics

• ### whythe mysterious fine structure constant 137? | evidence

That magic number, called the fine structure constant, is a fundamental constant, with a value which nearly equals 1/137. Or 1/137.03599913, to be precise. It is denoted by the Greek letter alpha – α. What’s special about alpha is that it’s regarded as the best example of …

• ### why number137is one of the greatest mysteries in physics

Oct 31, 2018 · That magic number, called the fine structure constant, is a fundamental constant, with a value which nearly equals 1/137. Or 1/137.03599913, to be precise. It is denoted by the Greek letter alpha -

• ### the mysterious 137– richard feynman

The numerical value of a, the fine structure constant, is given by the special case n 1 = 137, n 2 = 29. Thus a = a (137,29) = 0.0072973525318… The experimental value for a is a exp = 0.007297352533 (27), the (27) is +/- the experimental uncertainty in the last two digits