## Density |

Density | |
---|---|

Common symbols | D |

kg/m^{3} |

The **density**, or more precisely, the **volumetric mass density**, of a substance is its *ρ* (the lower case Greek letter *D* can also be used. Mathematically, density is defined as mass divided by volume:^{[1]}

where *ρ* is the density, *m* is the mass, and *V* is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its ^{[2]} although this is scientifically inaccurate – this quantity is more specifically called

For a pure substance the density has the same numerical value as its

To simplify comparisons of density across different systems of units, it is sometimes replaced by the

The density of a material varies with temperature and pressure. This variation is typically small for solids and liquids but much greater for gases. Increasing the pressure on an object decreases the volume of the object and thus increases its density. Increasing the temperature of a substance (with a few exceptions) decreases its density by increasing its volume. In most materials, heating the bottom of a fluid results in

The reciprocal of the density of a substance is occasionally called its

- history
- measurement of density
- changes of density
- density of solutions
- densities
- common units
- see also
- references
- external links

In a well-known but probably apocryphal tale, ^{[3]} Archimedes knew that the irregularly shaped wreath could be crushed into a cube whose volume could be calculated easily and compared with the mass; but the king did not approve of this. Baffled, Archimedes is said to have taken an immersion bath and observed from the rise of the water upon entering that he could calculate the volume of the gold wreath through the

The story first appeared in written form in * books of architecture*, two centuries after it supposedly took place.

From the equation for density (*ρ* = *m*/*V*), mass density has units of mass divided by volume. As there are many units of mass and volume covering many different magnitudes there are a large number of units for mass density in use. The ^{3}) and the ^{3}) are probably the most commonly used units for density. One g/cm^{3} is equal to one thousand kg/m^{3}. One cubic centimetre (abbreviation cc) is equal to one millilitre. In industry, other larger or smaller units of mass and or volume are often more practical and

Other Languages

Afrikaans: Digtheid

Alemannisch: Dichte

العربية: كثافة

aragonés: Densidat

অসমীয়া: ঘনত্ব

asturianu: Densidá (física)

azərbaycanca: Sıxlıq

تۆرکجه: سیخلیق

বাংলা: ঘনত্ব

Bân-lâm-gú: Bi̍t-tō͘

беларуская: Шчыльнасць

беларуская (тарашкевіца): Шчыльнасьць

भोजपुरी: घनत्व

български: Плътност

Boarisch: Dichtn

bosanski: Gustoća

català: Densitat

čeština: Hustota

chiShona: Tsinhano yeHuremu

Cymraeg: Dwysedd

dansk: Massefylde

Deutsch: Dichte

eesti: Tihedus

Ελληνικά: Πυκνότητα

español: Densidad

Esperanto: Denso

euskara: Dentsitate (fisika)

فارسی: چگالی

français: Masse volumique

Frysk: Tichtheid

furlan: Densitât

Gaeilge: Dlús

Gàidhlig: Dluthad

galego: Densidade

한국어: 밀도

Հայերեն: Խտություն

हिन्दी: घनत्व

hrvatski: Gustoća

Ido: Specifika pezo

Igbo: Density

Bahasa Indonesia: Massa jenis

interlingua: Densitate (quantitate physic)

íslenska: Eðlismassi

italiano: Densità

עברית: צפיפות החומר

Basa Jawa: Massa jenis

ಕನ್ನಡ: ಸಾಂದ್ರತೆ

ქართული: სიმკვრივე

қазақша: Тығыздық

Kiswahili: Densiti

Kreyòl ayisyen: Dansite

kurdî: Tîrbûn

Кыргызча: Тыгыздык

Latina: Densitas et Spissitudo

latviešu: Blīvums

Lëtzebuergesch: Dicht

lietuvių: Tankis

la .lojban.: denmi

lumbaart: Densità

magyar: Sűrűség

македонски: Густина

മലയാളം: സാന്ദ്രത

मराठी: घनता

მარგალური: პისქვინი

مصرى: الكثافه

Bahasa Melayu: Ketumpatan

монгол: Нягт

မြန်မာဘာသာ: သိပ်သည်းခြင်း

Nederlands: Dichtheid (natuurkunde)

नेपाली: घनत्व

日本語: 密度

Napulitano: Denzetà

Nordfriisk: Sachthaid

norsk: Tetthet

norsk nynorsk: Tettleik

occitan: Massa volumica

ਪੰਜਾਬੀ: ਸੰਘਣਾਪਣ

Plattdüütsch: Dicht

polski: Gęstość

português: Densidade

română: Densitate

русский: Плотность

संस्कृतम्: घनत्वम् (भौतविज्ञानम्)

Scots: Density

shqip: Dendësia

sicilianu: Dinsitati

සිංහල: ඝනත්වය

Simple English: Density

slovenčina: Hustota (objemová hmotnosť)

slovenščina: Gostota

ślůnski: Gynstość

کوردی: چڕی

српски / srpski: Густина

srpskohrvatski / српскохрватски: Gustina

suomi: Tiheys

svenska: Densitet

தமிழ்: அடர்த்தி

తెలుగు: సాంద్రత

ไทย: ความหนาแน่น

Türkçe: Yoğunluk

українська: Густина

اردو: کثافت

Tiếng Việt: Khối lượng riêng

Winaray: Kasuok

吴语: 密度

Yorùbá: Kíkisí

粵語: 密度

中文: 密度