eta
Seventh Hellenic letter
Eta is the seventh letter of the Greek alphabet (Η, η), used in mathematics, physics, and engineering to represent various quantities like efficiency or viscosity.
Outside technical contexts, eta appears mainly in fraternity and sorority names. (Capitalized ETA is the acronym for estimated time of arrival.)
First Greek letter
Purpose or duty
- variableProne to fluctuation
- coefficientNumber multiplying a variable
- parameterBoundary-setting factor
- notationSystem of written symbols
equation · regression · gradient · optimization · statistics · correlation · efficiency
Fluid's flow resistance
- fluidSubstance that flows
- dynamicsStudy of forces
- coefficientNumber multiplying a variable
- mechanicsScience of motion
measurement · resistance · flow · Newtonian · shear · kinematic · absolute · liquid
alpha
First Greek letter
function
Purpose or duty
- variableProne to fluctuation
- coefficientNumber multiplying a variable
- parameterBoundary-setting factor
notation · equation · regression · gradient · optimization · statistics · correlation · efficiency
viscosity
Fluid's flow resistance
- fluidSubstance that flows
- dynamicsStudy of forces
- coefficientNumber multiplying a variable
mechanics · measurement · resistance · flow · Newtonian · shear · kinematic · absolute · liquid
- lettersa, d, e, h, q
- Greek lettersalpha, gamma, epsilon, kappa, lambda
- Greek wordsalpha, gamma, epsilon, kappa, lambda
- travel documentspassport, passports, travel document, visas, travel visa
- Greek languageGreek alphabet, alpha, Greek vocabulary, gamma, Greek letters
- ancient alphabetsalpha, gamma, epsilon, phi, psi
Scheduled leaving moment