1. Meniscus

2. The meniscus (plural: menisci, from the Greek for "crescent") is the curve in the upper surface of a liquid close to the surface of the container or another object, caused by surface tension.Greekcrescentsurface tension It can be either convex or concave. A convex meniscus occurs when the molecules have a stronger attraction to each other (cohesion) than to the material of the container (adhesion). [1]convex or concavecohesionadhesion [1]

3. Meniscus One can over-fill a glass with mercury and produce a convex meniscus that rises above the top of the glass. Conversely, a concave meniscus occurs when the molecules of the liquid attract those of the container's, causing the surface of the liquid to cave downwards. This can be seen in a glass of water.

4. Meniscus When reading a scale on the side of an instrument filled up with liquid, the meniscus must be taken into account in order to obtain a precise measurement. Manufacturers take the meniscus into account and calibrate their measurement marks relative to the resulting meniscus.

5. Meniscus The measurement is taken with the meniscus at eye level to eliminate parallax error, and at the center of the meniscus.parallax error Read at the top of a convex meniscus, or Read at the bottom of a concave meniscus.

6. Meniscus