An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Based on the results of → experiment and → observation only, without → theory.

From L. empiricus, from Gk. empeirikos "experienced," from empeiria "experience," from empeiros "skilled," from en- "in" + peira "experiment."

Ârvini, adj. of ârvin "experience, experiment, test," from prefixed Av. vaēn- (Mod.Pers. bin, present stem of didan "to see, look") "to see," aibī-vaēn- "to look, notice;" cf. Parthian Mid.Pers. frwyn- "to foresee," frwyng "foreseeing," frwyngyft "foresight," from Proto-Iranian *fra-uain.

1) In physics, a mathematical equation that predicts observed results, but has no known theoretical basis to explain why it works.
2) In chemistry, a simple expression of the relative number of each type of atom in a chemical compound.

→ empirical; → formula

A branch of knowledge, including → natural sciences and → social sciences, that is based on observable phenomena and must be capable of being verified by observation.

→ empirical; → science.

Describing an → equation or → formula that results from a → combination of → experiment and → theory.

→ semi-; → empirical.

Same as → Weizsacker formula.

→ semiempirical; → binding; → energy; → formula.