unit test in index
I assume "molecular refractive index" refers to "the refractive index of a group of molecules". In this case, you just use the units for a refractive index - i.e., a dimensionless number.
Aston Index is an ability test.
The time reversal test is a criterion for assessing the consistency of index numbers, particularly in the context of economic measures like price indices. It states that if an index number measures the change in a variable from time period A to B, then reversing the time period (from B back to A) should yield the reciprocal of the original index. If an index satisfies this condition, it demonstrates consistency, indicating that the measure is stable and reliable across time periods. However, not all index numbers satisfy this test, which can lead to discrepancies in interpretation.
what is index number
uses of index
Modulation index is also called as Modulation depth. The modulation index of a modulation scheme describes by how much the modulated variable of the carrier signal varies around its unmodulated level.
'Power' in maths is also known as 'exponential' or 'index number'. eg. 3x^(2) / The '2' is a power/expomnential/index number.
Refractive index of the medium is defined as the ratio of the velocity of light in vacuum to that in the medium. No unit for refractive index.
Fisher's Index
Its Postal Index Number and for mobile its Personal Identity Number.
m2/m2
The abrasion index is calculated using a standardized test that measures the wear resistance of materials, typically through the use of a specific apparatus, such as the Los Angeles (LA) abrasion test. In this test, a sample of the material is placed in a rotating drum along with steel balls and subjected to a defined number of revolutions. The percentage of material that is retained and the weight of the sample before and after the test are used to determine the abrasion index, which is expressed as the percentage of material lost due to abrasion. This index helps in assessing the durability and suitability of materials for construction and other applications.