Why Do You Read the Bottom of the Meniscus

Asked past: Tiana Hosl

asked in category: General Terminal Updated: 11th March, 2020

Why do you read the meniscus at center level?

A meniscus occurs because of surface tension in the liquid and must be read at eye level. For a concave meniscus, the correct volume will be read at the bottom of the curve. For a convex meniscus, the opposite is true and the correct reading will be at the top of the bend.

The Meniscus. Normally, liquid will bend at the edges of the surface where the liquid touches the container because h2o molecules are more attracted to glass than to each other. We need to read the level at the lesser of the meniscus to measure out a volume of liquid in a graduated cylinder.

what is meniscus level? The level depends on the shape of the meniscus, or crescent D. Updated October 02, 2019. The meniscus is the curve seen at the acme of a liquid in response to its container. The meniscus can be either concave or convex, depending on the surface tension of the liquid and its adhesion to the wall of the container.

Similarly, what is a meniscus and how practice you read it?

Concave menisci are read from the bottom of the curve at eye level. A meniscus is a curve formed on the upper surface of a liquid inside a container. This curve is formed by the surface tension between the liquid and the container holding the liquid. A common liquid that forms a convex meniscus is liquid mercury.

Why is the meniscus important?

The meniscus plays 2 of import roles within the genu. A meniscus is a disquisitional daze absorber within the knee. The meniscus also provides stability within the knee.

33 Related Question Answers Found

What is the opposite of meniscus?

A meniscus may exist either concave or convex. Some liquids, like mercury, have a convex meniscus because the opposite is true - the molecules of the liquid are more strongly attracted to each other than the walls of the container.

What causes a meniscus?

A concave meniscus occurs when the particles of the liquid are more strongly attracted to the container (adhesion) than to each other (cohesion), causing the liquid to climb the walls of the container. This occurs between water and glass.

How practice you read a graduated cylinder meniscus?

Read the Meniscus For most liquids, this "eye" will be the lowest point of the meniscus. For a very few liquids, similar mercury, the eye of the meniscus will be the highest point of the liquid. To properly read the meniscus, your line of sight must be level with the heart of the curve of the meniscus.

What is lower and upper meniscus?

All pipets are calibrated to the lower meniscus, and so apply it as long as you tin see it. If the solution is very dark or opaque to the extent that the lower meniscus is not visible, only then apply the upper meniscus. In the case of liquids like mercury that grade a convex meniscus, use the top of the convex meniscus.

How exercise you detect the volume of a liquid in a graduated cylinder?

Place the graduated cylinder in a flat surface and friction match the acme of the liquid column directly with the level of your centre. Due to the superficial tension property of the liquid, this volition tend to curve downward. This curve is known equally meniscus. Read the volume value at the bottom of the meniscus.

Which glassware is most precise?

Volumetric Glassware Graduated cylinders, beakers, volumetric pipets, burets and volumetric flasks are five kinds of glassware often used to mensurate out specific volumes. Volumetric pipets, flasks and burets are the virtually authentic; the glassware makers calibrate these to a loftier level of accuracy.

What is convex meniscus?

A convex meniscus occurs when the molecules have a stronger attraction to each other than to the container, as with mercury and glass. A flat meniscus occurs with water in some types of plastic tubes; tubes fabricated out of material that water does not stick to.

What is a meniscus in biology?

Biology Glossary search by EverythingBio.com. A concave surface of a liquid resulting from surface tension. The bottom of the meniscus is used to measure the volume of a liquid in apparatus such every bit a graduated cylinder.

What is a meniscus graduated cylinder?

A: A meniscus is the curved surface at the top of a column of liquid. In a science course, this liquid is usually water or some sort of aqueous solution, and the column is usually a graduated cylinder or a pipet.

Does the ocean have a meniscus?

The meniscus (plural: menisci, from the Greek for "crescent") is the curve in the upper surface of a liquid shut to the surface of the container or another object, caused by surface tension. I'm playing a petty fast and loose with the definition, but the surface of the sea curves downward very slightly.

Why is mercury meniscus convex?

Mercury does not wet glass - the cohesive forces within the drops are stronger than the agglutinative forces between the drops and drinking glass. When liquid mercury is confined in a tube, its surface (meniscus) has a convex shape considering the cohesive forces in liquid mercury tend to describe information technology into a drop.

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