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Level with the bottom of the fluid's meniscus
Volume displacement is a good way to find the volume of a cylinder, and is probably better than simply measuring it. To measure and calculate a cylinder's volume, you must use pi, which is typically rounded to 3.14. Rounding means less accuracy, and there should be no rounding involved in volume displacement.
It should say on the cylinder. Most of the ones I've seen are marked every 1 or 2 ml and labelled every 10 ml, or marked every 0.1 ml and labelled every ml.
If you need to improvise a measuring cylinder with a graduation interval of 3cm, you can use the following materials: Transparent plastic bottle: Find a clean, transparent plastic bottle with a straight cylindrical shape. Ensure the bottle has a smooth surface, preferably without any labels or markings. Ruler or measuring tape: Obtain a ruler or measuring tape with precise markings in centimetres. This will be used to measure and mark the intervals on the bottle. Permanent marker: Get a marker with a fine tip to make clear and legible marks on the bottle. Choose a colour that contrasts well with the plastic material to ensure easy visibility. Here's a step-by-step guide to improvising a measuring cylinder with a 3cm graduation interval: Clean the plastic bottle thoroughly to remove any residue or impurities. Ensure that it is completely dry before proceeding. Use the ruler or measuring tape to measure and mark intervals of 3cm along the height of the bottle. Start from the bottom and work your way up, making clear and accurate marks. Connect the marks vertically using the permanent marker, creating straight lines that indicate each 3cm interval. Make sure the lines are visible and easy to read. Optional: Label the intervals using numbers or labels to provide clear reference points. You can use the permanent marker to write directly on the bottle. Allow the markings to dry completely to prevent smudging or fading. Now you have an improvised measuring cylinder with a graduation of 3cm intervals. Remember to handle it carefully and ensure that the measurements are taken from eye level for accuracy.
Should be closest to passenger side
When you read a scale on the side of a container with a meniscus, such as a graduated cylinder or volumetric flask, it's important that the measurement accounts for the ... For mercury, take the measurement from the top of the meniscus. ...
Level with the bottom of the fluid's meniscus
A graduated cylinder would work.
This is called a meniscus, from the greek work for 'crescent'. You should meaure from the bottom of it when it is concave (like a smile) or the top when it is convex (like a frown).
If using a graduated cylinder, take into consideration the meniscus, which presents itself as a concave depression on the surface of the liquid in a cylindrical vessel or a convex bulge if such a container is filled to the brim. The height of the meniscus should be divided in half. If you don't have a graduated cylinder, utilize the formula pi times radius squared times the height (don't forget to adjust for the meniscus) of the liquid in a cylinder.
All liquids have a surface tension. This tension creates a meniscus or curve on the surface, most noticeable in small diameter tubes or cylinders. The meniscus of water curves up the sides of the cylinder, while heavy liquids like mercury curves down the cylinder. You should always measure light liquids at the bottom of the meniscus and heavy liquids at the top of the meniscus.
I think you are talking about a graduated cylinder. When measuring liquids in a grad. cylinder you should read at the bottom of the miniscus ( the curved surface of the water or other liquid).
the anser is Meniscus
You should always measure at the lowest part of the meniscus. The meniscus is a slight curvature at the top of a liquid in a container.
The answer depends on the liquid, or more specifically, how the surface tension in the liquid affects the meniscus. It should be the top of the meniscus for liquids such as mercury but the bottom for liquids such as water or alcohol.
Place the cylinder on a flat surface. Read the volume contained in a graduated cylinder or volumetric flask, by comparing the bottom of the meniscus (the curved surface of the liquid),at eye level, to the nearest graduation or ring.
The liquid molecules are more strongly attracted to the graduated cylinder than to each other. This causes the liquid to rise up on the sides of the graduated cylinder. Therefore it is important to read the line, even with the center of the meniscus, and at the bottom of the meniscus to accurately measure the volume of a liquid in the graduated cylinder. If you are still a bit confused I also found some information at this website: http://chemistry.about.com/od/chemistrylabexperiments/qt/meniscus.htm