Research Study/Video Director/Owner; Corresponding Author: Prof. Dr. Vildan N. Civelek, Endocrinologist, http://civelek.wetpaint.com, Email: vncivelek {at} gmail.com . In this medical research, when Fatty Acids (FA) are added outside of phospholipid membranes Fatty Acid moves (flip-flops) rapidly to the otherside of the membrane. Transported Fatty Acid is not stable inside; releasing positively charged Hydrogen ion (H+) dissociate. The H+ is measured in pH units by fluorescence spectrophotometric methods. Category: Documentary, Educational, Medicine, Conference, Research, Health, Science, Biochemistry, Biophysics, Internal Medicine, Endocrinology, Molecular, Metabolism Tags: Diffusion, Common-Fatty-Acids, Palmitic-Acid [CH3 (CH2 )14 COOH], Dissociation, Hydrogen, Ion, Concentration, Cell Membrane, Phospholipid Vesicle, Adipocyte, Pancreatic Beta-cell, Fluorospectroscopy, Flip-flop