The Little Prince: A New York Story Exhibition, NBC news report on the 2014 Little Prince exhibition at the Morgan Library & Museum (video, 3:10) (ഇംഗ്ലീഷ്)

The ප්‍රතිවාහී අනුපාතය is the ratio of the amount of moles returned as refluxed liquid to the fractionating column and the amount of moles of final product, both per unit time.