User talk:Gcllau

Signing
Please don't sign articles (i.e., don't place ~ in the article body). Each page's revision history documents who added what. Signing is useful for talk pages, because there, it's important to see who said what as part of the content, not just for historical or copyright purposes. DMacks (talk) 14:43, 9 April 2008 (UTC)

Wikipedia pages
I have deleted a page you created, Gram per cubic centimetre, because it had no viable content. Remember, every page has to be a factual description of a clearly-defined topic, not merely editorial comments or reminders to others. Density can be expressed in any "mass per volume" unit. If you have concerns about the specific units used in a specific article, please discuss it on that article's talk page. DMacks (talk) 14:55, 9 April 2008 (UTC)

Sorry that I have signed on the page Yes, it is true that the Density can be expressed in any "mass per volume" unit, but the Kg per cubic metre is wrong and misleading to the readers. The density of 50 Kg per 2 cubic meter is not 25, but 0.025 Gcllau (talk) 04:00, 10 April 2008 (UTC)


 * Density isn't a unitless quantity: 50 kg per 2 cubic meter is "25 kg/m3" or "0.025 kg/dm3". Specific gravity is a unitless relative density, but because it's a ratio, it doesn't matter what units were used to measure the numerator and denominator as long as they are the same. That last bit is the only place having a well-defined standard unit matters--need to match whatever is used for the reference value. DMacks (talk) 04:38, 10 April 2008 (UTC)

Thank you Gcllau (talk) 04:57, 10 April 2008 (UTC)