Editing Graduated cylinder (section)

== Measurement ==
{{multiple image|total_width=300
|image1=Grauduate cylinder reading.png|caption1=If the reading is done and the value calculated is set to be 40.0 mL. The precise value would be 40.0 ± 0.1 or 40.1 to 39.9 mL
|image2=Graduated cylinder illustration.png|caption2=If the reading is done and the value calculated is set to be 36.5 mL. The more precise value equates to 36.5 <math>\pm</math> 0.5 mL or 36.0 to 37.0 mL.
}}
To read the volume accurately, the observation must be at an eye level and read at the bottom of a meniscus of the liquid level.<ref>{{Cite web|title=graduated cylinder |url=http://www2.ohlone.edu/people/jklent/labs/gradcyl.pdf |website=ohlone.edu |access-date=2015-06-25 |url-status=dead |archive-url=https://web.archive.org/web/20150626150929/http://www2.ohlone.edu/people/jklent/labs/gradcyl.pdf |archive-date=2015-06-26 }}</ref>
The main reason as to why the reading of the volume is done via [[Meniscus (liquid)|meniscus]] is due to the nature of the liquid in a closed surrounded space. By nature, liquid in the cylinder is attracted to the wall around it through molecular forces. This forces the liquid surface to develop either a [[wikt:convex|convex]] or [[wikt:concave|concave]] shape, depending on the type of the liquid in the cylinder. Reading the liquid at the bottom part of a [[wikt:concave|concave]] or the top part of the [[wikt:convex|convex]] liquid is equivalent to reading the liquid at its [[Meniscus (liquid)|meniscus]].<ref>{{Cite web|title=Volume Measurements with a Graduated Cylinder |url=http://www.dlsu.edu.ph/academics/colleges/cos/physics/_pdf/sig-fig-5-volume-measurements.pdf |access-date=2016-02-04 |url-status=dead |archive-url=https://web.archive.org/web/20160216103647/http://www.dlsu.edu.ph/academics/colleges/cos/physics/_pdf/sig-fig-5-volume-measurements.pdf |archive-date=2016-02-16 }}</ref>  From the picture, the level of the liquid will be read at the bottom of the [[Meniscus (liquid)|meniscus]], which is the concave. The most accurate of the reading that could be done here is reduced down to 1 mL due to the given means of measurement on the cylinder. From this, the derived error is one tenth of the least figure. For instance, if the reading is done and the value calculated is set to be 36.5 mL. The error, give or take 0.1 mL, must be included too. Therefore, the more precise value equates to 36.5 <math>\pm</math> 0.1; 36.4 or 36.6 mL. Therefore, there are 3 [[significant figures]] can be read from the given graduated cylinder picture.<ref>{{Cite web|title = Math Skills - Scientific Notation|url = http://www.chem.tamu.edu/class/fyp/mathrev/mr-sigfg.html|website = www.chem.tamu.edu|access-date = 2016-02-12}}</ref> Another example, if the reading is done and the value calculated is set to be 40.0 mL. The precise value is 40.0 <math>\pm</math> 0.1; 40.1 or 39.9 mL.<ref>{{Cite book|url=https://books.google.com/books?id=tgvcy3BTeZQC|title=Maths for Advanced Chemistry|last1=Robinson|first1=Michael|last2=Robinson|first2=Mike|last3=Taylor|first3=Mike|date=2002-01-01|publisher=Nelson Thornes|isbn=9780748765829|language=en|access-date=15 March 2016}}</ref>