The letter alpha represents various concepts in physics and chemistry, including alpha radiation, angular acceleration, alpha particles, alpha carbon and strength of electromagnetic interaction (as Fine-structure constant). Alpha also stands for thermal expansion coefficient of a compound in physical chemistry.
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What does alpha mean in an equation?
Alpha and beta are two different parts of an equation used to explain the performance of stocks and investment funds. Beta is a measure of volatility relative to a benchmark, such as the S&P 500. Alpha is the excess return on an investment after adjusting for market-related volatility and random fluctuations.
What is lower case alpha in physics?
First up, the lowercase Alpha is often used to represent alpha particles in physics.
What variable is alpha in physics?
In physics, alpha is used as a variable for quantities that may differ from each other. Some quantities that use ฮฑ include: The alpha particle, which is an isotope of helium which in turn is composed of 2 protons and 2 neutrons.
Why is alpha called alpha?
The Greek alpha comes from the Hebrew and Phoenician aleph, a form of the word for “ox,” eleph, possibly because the character resembled an ox’s head.
What is beta and alpha?
Alpha measures the return of an asset compared to the underlying benchmark index. Hence, while beta is a measure of systematic risk and volatility, alpha is a measure of excess return.
How do you find the alpha?
What is alpha in quantum mechanics?
Alpha is related to the probability that an electron will emit or absorb a photon. Given two hypothetical point particles each of Planck mass and elementary charge, separated by any distance, ฮฑ is the ratio of their electrostatic repulsive force to their gravitational attractive force.
Why are Greek letters used in physics?
Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.
What’s the symbol for alpha and omega?
Alpha (ฮ) and omega (ฮฉ) are the first and last letters, respectively, of the classical (Ionic) Greek alphabet.
What does ฯ mean in physics?
Angular frequency (ฯ), also known as radial or circular frequency, measures angular displacement per unit time. Its units are therefore degrees (or radians) per second. Angular frequency (in radians) is larger than regular frequency (in Hz) by a factor of 2ฯ: ฯ = 2ฯf.
Is Omega the last letter?
Omega (uppercase ฮฉ, lowercase ฯ) is the 24th and last letter of the Greek alphabet. In the Greek numeric system, it has a value of 800. Pronounced [ษ:] or ‘aw’ as in ‘raw’.
What does ฮป mean in physics?
Wavelength is usually denoted by the Greek letter lambda (ฮป); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): ฮป = v/f.
What is alpha and Beta decay?
Alpha decay – A common mode of radioactive decay in which a nucleus emits an alpha particle (a helium-4 nucleus). Beta decay – A common mode of radioactive decay in which a nucleus emits beta particles. The daughter nucleus will have a higher atomic number than the original nucleus.
What is alpha in physics rotational motion?
Angular acceleration ฮฑ ฮฑ is the rate of change of angular velocity. In equation form, angular acceleration is. ฮฑ = ฮ ฯ ฮ t , ฮฑ = ฮ ฯ ฮ t , where ฮ ฯ ฮ ฯ is the change in angular velocity and ฮ t ฮ t is the change in time. The units of angular acceleration are (rad/s)/s, or rad/s2.
What is another term for alpha?
Similar words for alpha: beginning (noun) commencement (noun) dawn (noun) genesis (noun) origin (noun)
What is the meaning of the name alpha?
Alpha is a gender-neutral name of Greek origin, meaning “beginning.” It marks the first letter in the Greek alphabet and points to the primary or principal thing.
Does alpha mean the beginning?
The word “Alpha” comes from the first letter of the Greek alphabet and symbolizes a beginning or starting point of a journey.
What is the value of alpha?
The value of alpha is associated with the confidence level of our test. The following lists some levels of confidence with their related values of alpha: For results with a 90 percent level of confidence, the value of alpha is 1 โ 0.90 = 0.10.
Is alpha a Greek letter?
Alpha is the first Greek letter. It is based on the Hebrew word aleph, which comes from the word eleph, meaning “ox.” Beta is the second Greek letter.
Is alpha higher than beta?
Both alpha and beta are historical measures of past performances. A high alpha is always good. A high beta may be preferred by an investor in growth stocks but shunned by investors who seek steady returns and lower risk.
What is alpha beta and sigma?
Alpha males are domineering and assertive, while sigma males are strong, distinctive personalities with traits of both alpha and beta males. Moreover, alpha males are outgoing and loud, while sigma males are introverts and loners by nature.
What is before alpha?
Pre-Alpha is the version before the Alpha version, Alpha is the version before the Beta version, Beta is the version before the Gamma version, Release Candidate is the version just before the release.
Is alpha same as P value?
Alpha, the significance level, is the probability that you will make the mistake of rejecting the null hypothesis when in fact it is true. The p-value measures the probability of getting a more extreme value than the one you got from the experiment. If the p-value is greater than alpha, you accept the null hypothesis.
Is alpha positive or negative physics?
ฮฑ Particles have a positive charge and are identical with helium nuclei, and consist of two protons and two neutrons. They result from the radioactive decay of heavy elements such as radium, thorium, uranium, and plutonium.