1 Caffeine's not your friend if you have acid reflux. 2  Caffeine seems to be the main culprit by relaxing the sphincter muscle that normally keeps stomach acid from bubbling up the esophagus. 3  Decaf coffee has significantly less of a reflux effect, studies have found.
meniscus noun [ C ] (BODY PART) âº anatomy a curved piece of cartilage inside a joint (= place where two bones are connected) of the body such as the knee. âº physics on a liquid, a surface that curves either out or in as a result of surface tension.
In this lab, a beaker, two graduated cylinders and a burette will be used to measure liquid volumes, and their precision will be compared. Note that when measuring liquid volumes, it is important to read the graduated scale from the lowest point of the curved surface of the liquid, known as the liquid meniscus.