Glossary entry (derived from question below)
Sep 19, 2012 03:04
11 yrs ago
English term
(M)
English
Tech/Engineering
Chemistry; Chem Sci/Eng
The coke is weighed (M), placed in a small drum and rotated for 5 minutes at 50+/- 2rpm.
What does "(M)" mean in this context? Thanks in advance!
What does "(M)" mean in this context? Thanks in advance!
Responses
| 4 +2 | mass |
Charles Davis
|
Change log
Oct 3, 2012 05:18: Charles Davis Created KOG entry
Responses
+2
20 mins
Selected
mass
M (either upper-case M or lower-case m) is commonly used as the abbreviation of mass, and it fits the context (more fully provided by Taña). The text refers to the "weight" of the coke sample (M, M1, M2), but this is a very common but inaccurate misuse of "weight" to mean "mass". Grams and kilograms are units of mass, not weight.
http://en.wikipedia.org/wiki/Mass
http://en.wikipedia.org/wiki/Mass
Peer comment(s):
| agree |
Didier Fourcot
: Weighing is measuring the weight, but this is the most common and often the only appropriate way to infer the mass
4 hrs
|
|
Thanks for the clarification, Didier
|
|
| agree |
Doroteja
2 days 10 hrs
|
|
Thank you, Doroteja!
|
4 KudoZ points awarded for this answer.
Comment: "Selected automatically based on peer agreement."
Reference comments
5 mins
Taña Dalglish
Jamaica
Jamaica
Native in English
&
English
Jamaica
Translating the Ideas Behind the Words
Native in: English (Variant: British)
Works in: Spanish to English, English to Spanish, French to English, and 2 more.
Reference:
You need to give more information. It is an assumption that below is related to your text (the Rheology of Coal):
http://www.sgs.com/en/Mining/Analytical-Services/Coal-and-Co...
G CAKING INDEX TEST
This test was developed in China and is performed in accordance with GB/T 5447 and ISO 15585 standards. It is used as a primary met coal evaluation tool by Chinese coke producers. In this test, 1g of minus 0.2mm is mixed with 5g of anthracite and placed in a crucible. A 100-115g steel weight is placed on top of the coal sample and then the sample is pressed for 30 seconds under a 6kg mass. The sample is rapidly coked in an electric furnace to 850ºC in 15 minutes. The coke is weighed (M), placed in a small drum and rotated for 5 minutes at 50+/- 2rpm. The coke residue is screened at 1mm and the weight of the +1mm coke (M1) is determined. The +1mm coke is then tumbled a second time, with the residue screened at 1mm and the weight of the +1mm coke (M2) is determined.
http://www.sgs.com/en/Mining/Analytical-Services/Coal-and-Co...
G CAKING INDEX TEST
This test was developed in China and is performed in accordance with GB/T 5447 and ISO 15585 standards. It is used as a primary met coal evaluation tool by Chinese coke producers. In this test, 1g of minus 0.2mm is mixed with 5g of anthracite and placed in a crucible. A 100-115g steel weight is placed on top of the coal sample and then the sample is pressed for 30 seconds under a 6kg mass. The sample is rapidly coked in an electric furnace to 850ºC in 15 minutes. The coke is weighed (M), placed in a small drum and rotated for 5 minutes at 50+/- 2rpm. The coke residue is screened at 1mm and the weight of the +1mm coke (M1) is determined. The +1mm coke is then tumbled a second time, with the residue screened at 1mm and the weight of the +1mm coke (M2) is determined.
Note from asker:
| Thanks Taña ! Yes, it is my context. |
Discussion