What does r-factor mean?

Definitions for r-factor

Here are all the possible meanings and translations of the word r-factor.

Freebase

  1. R-factor

    In crystallography, the R-factor is a measure of the agreement between the crystallographic model and the experimental X-ray diffraction data. In other words, it is a measure of how well the refined structure predicts the observed data. It is defined by the following equation: where F is the so-called structure factor and the sum extends over all the reflections measured and their calculated counterparts respectively. The structure factor F is closely related to the intensity of the reflection it describes: For large molecules, R-factor usually ranges between 0.6 and 0.2. Small molecules usually form more ordered crystals than large molecules, it is possible to attain lower R-factors. In the Cambridge Structural Database more than 95% of the 500,000+ crystals have an R-factor lower than 0.15 and 9.5% have an R-factor lower than 0.03. Crystallographers also use the Free R-Factor to describe the quality of a model. The quantities and are similarly used to describe the internal agreement of measurements in a crystallographic data set.

Numerology

  1. Chaldean Numerology

    The numerical value of r-factor in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of r-factor in Pythagorean Numerology is: 9

Sample Sentences & Example Usage

  1. Hesiod:

    Observe due measure, for right timing is in all things the most important factor.

  2. Charles Galloway:

    The single most important factor in determining the climate of an organization is the top executive.

  3. Mary McLeod Bethune:

    Faith is the first factor in a life devoted to service. Without it, nothing is possible. With it, nothing is impossible.

  4. Chief Executive Officer Lukas Braunschweiler:

    We're hedging our inter-company net exposure on working capital but we didn't hedge enough on these currencies, usually, they haven't been a big factor. But now, they've become a big factor.

  5. Mona Gupta:

    There is child labor not just because of a supply-pull factor, but also a demand-push factor, the only way to resolve the issue is to sensitize everyone: businesses, workers and consumers. It can be done.

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