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# 密度

## 維基百科，自由的百科全書

ρ

${\displaystyle \rho ={\frac {mass}{Volume))}$

## 定義

${\displaystyle \rho ={\frac {\mathrm {d} m}{\mathrm {d} V))}$

${\displaystyle \rho ={\frac {m}{V))}$

## 公式的變形——質量方程式

${\displaystyle \rho ={\frac {\mathrm {d} m}{\mathrm {d} V))}$

${\displaystyle m=\int \rho \,\mathrm {d} V}$

## 密度及比容

${\displaystyle \ v={\frac {V}{m))\ ={\rho }^{-1))$

+100 958.0966
+80 971.7224
+60 983.2106
+40 992.2473
+30 995.6783
+25 997.0751
+22 997.8003
+20 998.2336
+15 999.1285111
+10 999.7281
+4 999.9999985
0 999.8675
−10 998.1555
−20 993.6829
−30 984.5869
0 °C以下的密度值參看過冷水

## 常見物質密度列表

22.59
22.56
21.45
19.30
19.25
19.05
13.58
12.023
11.34
10.49
8.96
7.87
7.31

4.507

2.7

1.74

PET 1.38
(-182.9 C°) 1.025

1.000

(0 C°) 0.917

0.534

## 參考

1. ^ The National Aeronautic and Atmospheric Administration's Glenn Research Center. Gas Density Glenn research Center. grc.nasa.gov. [2015-08-29]. （原始內容存檔於2013-04-14）.
2. ^ Density definition in Oil Gas Glossary. Oilgasglossary.com. [2010-09-14]. （原始內容存檔於2010年8月5日）.
3. ^ Lide, D. R. (Ed.) (1990). CRC Handbook of Chemistry and Physics (70th Edn.). Boca Raton (FL):CRC Press
4. ^ Water – Density and Specific Weight 頁面存檔備份，存於互聯網檔案館. Engineeringtoolbox.com. Retrieved on 2011-11-22