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Difference between revisions of "Density"

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m (→‎Density of some materials: Petrified wood is less dense than dolomite, by far)
m (example of kg/m^3)
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'''Density''' is a [[material]] property that, along with the volume of the object, affects the [[weight]] of an object made from the [[material]].
 
'''Density''' is a [[material]] property that, along with the volume of the object, affects the [[weight]] of an object made from the [[material]].
  
Density influences weight, and tests show that weight affects how much damage blunt-force [[weapon|weapons]] do. Additionally, lightweight edged weapons or attacking parts made of certain materials seem to have difficulty piercing tissue layers. Apparently, density in dwarf fortress is in kg/m<sup>3</sup>. Density also affects fall damage. DF simulates falling by shooting the ground at you, so denser floors do more damage.
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Density influences weight, and tests show that weight affects how much damage blunt-force [[weapon|weapons]] do. Additionally, lightweight edged weapons or attacking parts made of certain materials seem to have difficulty piercing tissue layers. Apparently, density in dwarf fortress is in kg/m<sup>3</sup>*. Density also affects fall damage. DF simulates falling by shooting the ground at you, so denser floors do more damage.
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: ''(* For example, in the real world, the density of pure gold is 19.32 grams/cm<sup>3</sup>, which works out to be 19,320 kg/m<sup>3</sup>, the same numeric value as the density of DF Gold (see table below).)''
 
== Density of some materials ==
 
== Density of some materials ==
  

Revision as of 23:12, 9 May 2017

This article is about the current version of DF.
Note that some content may still need to be updated.

Density is a material property that, along with the volume of the object, affects the weight of an object made from the material.

Density influences weight, and tests show that weight affects how much damage blunt-force weapons do. Additionally, lightweight edged weapons or attacking parts made of certain materials seem to have difficulty piercing tissue layers. Apparently, density in dwarf fortress is in kg/m3*. Density also affects fall damage. DF simulates falling by shooting the ground at you, so denser floors do more damage.

(* For example, in the real world, the density of pure gold is 19.32 grams/cm3, which works out to be 19,320 kg/m3, the same numeric value as the density of DF Gold (see table below).)

Density of some materials

Note that not all forms of items are the same size, and so are not comparable when considering actual weight for practical applications, such as a door prize. A stone (including raw ore) has a size of 10,000 cm3 and a log of wood 5,000 cm3, while a bar of metal (or a block of stone or wood) have a size of only 600 cm3, a difference of ~16.67:1 for vs. metals, or ~8.33:1 for wood vs. metals.


Name Type Density Notes
Feather tree Wood 100 Least dense wood, found only in dry, good biomes
Candlenut Wood 140 Second least dense wood, found only in dry, tropical biomes
Adamantine Metal 200 Least dense metal
Raw adamantine Stone 200 Least dense stone
Kapok Wood 260 Third dense wood, found only in dry, tropical biomes
Willow Wood 390 Fourth lightest, found in "wet" biomes, most widespread of "light" wood
Bone Organics 500
Leather Organics 500
Silk Organics 500
Yarn Organics 500
Tunnel tube Wood 500 Least dense underground wood, found only in caverns
"typical" wood Wood 600 There are about 4 dozen varieties of wood at 600, about a dozen (unlisted here) that weight less,
and a half-dozen (sim) that weigh more. See Wood for a full list and discussion.
Oak Wood 700 Densest "common" wood, temperate/dry
Mangrove Wood 830 Densest "normal" wood, found only in wet swamp biomes
Divine metal Metal 1000 Second least dense metal
Glumprong Wood 1200 Densest above-ground wood (by far), found only in dry, evil biomes
Blood thorn Wood 1250 Densest wood, underground, found only in caverns
Lignite Stone 1250
Jet Stone 1320 Least dense non-economic stone
Earthenware Ceramic 1360
Plant cloth Organics 1520
Stoneware Ceramic 2000
Saltpeter Stone 2105
Petrified wood Stone 2200 Least dense "magma-safe" stone
Gypsum relatives Stone 2300
Gypsum Stone 2320
Porcelain Ceramic 2403
Glass Gem 2600
(General) stone Stone 2670
Ordinary gem Gem 2670
Aluminum Metal 2700 Least dense "normal" metal
Limestone Stone 2710
Marble Stone 2780
Calcite Stone 2930
Diamond (any) Gem 3520
Cobaltite Stone 6295
Lay pewter Metal 7280
Galena Metal 7500 Ore of lead
Pitchblende Stone 7600 Most dense "magma-safe" stone
Iron Metal 7850
Steel Metal 7850
Cinnabar Stone 8100 Densest non-economic stone
Bronze Metal 8250
Copper Metal 8930
Silver Metal 10490
Lead Metal 11340
Gold Metal 19320
Platinum Metal 21400 Densest metal
Native platinum Stone 21400 Densest economic stone (and ore)
Slade Stone 200,000 Densest stone, difficult to mine, brutally slow to carry if you do