Module:Convert/extra/sandbox
< Module:Convert | extra
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Revision as of 11:27, 28 December 2013 by blackwiki>Johnuniq (tweak new units)
Documentation for this module may be created at Module:Convert/extra/sandbox/doc
-- Extra conversion data used by Module:Convert.
--
-- [[Module:Convert/data]] defines all units and is transcluded in all pages
-- where [[Module:Convert]] is used. Testing new units by editing that module
-- would invalidate the cache for all affected pages.
--
-- For quick changes and experiments with new units, this module can be edited.
-- Since this module is transcluded in only a small number of pages, changes
-- should cause little server overhead and should propagate quickly.
--
-- If a unit is defined in the data module, any definition here is ignored,
-- so defining the same unit in both modules is not an error.
-- A unit defined here can refer to units that are also defined here, and
-- can refer to units defined in the data module.
--
-- Periodically, those extra units that are wanted permanently can be removed
-- from here after being added to [[Module:Convert/data]].
local extra_units = {
["dpi"] = {
name1 = "DPI",
name2 = "DPI",
symbol = "DPI",
utype = "length",
invert = -1,
iscomplex= true,
scale = 1/0.0254,
default = "pitch",
link = "Dots per inch",
},
-- the convention is that resolution appears as simply micrometers dimensionally
-- see Digital Photogrammetry: A Practical Course by Wilfried Linder
["pitch"] = {
name1 = "µm",
name2 = "µm",
symbol = "µm",
utype = "length",
scale = 1e-6,
default = "dpi",
link = "Dots per inch",
},
["dpcm"] = {
name1 = "dot/cm",
name2 = "dot/cm",
symbol = "dot/cm",
utype = "length",
invert = -1,
iscomplex= true,
scale = 1/0.01,
default = "dpi",
link = "Dots per inch",
},
["isp"] = {
name1 = "second",
name2 = "seconds";
symbol = "s",
utype = "speed",
scale = 9.80665,
default = "km/s",
link = "Specific impulse",
},
-- from F=ma, Ns/kg is equivalent to units of speed
-- which is fortunate because convert couldn't handle it otherwise
["Ns/kg"] = {
name1 = "N-s/kg",
name2 = "N-s/kg";
symbol = "N-s/kg",
utype = "speed",
scale = 1,
default = "isp",
link = "Specific impulse",
},
["kNs/kg"] = {
name1 = "kN-s/kg",
name2 = "kN-s/kg";
symbol = "kN-s/kg",
utype = "speed",
scale = 1000,
default = "isp",
link = "Specific impulse",
},
-- units of inverse speed, because invert is negative
["si tsfc"] = {
name1 = "g/(kN·s)",
name2 = "g/(kN·s)",
symbol = "g/(kN·s)",
utype = "speed",
invert = -1,
iscomplex= true,
scale = 1/101972/9.80665,
default = "tsfc",
link = "Thrust specific fuel consumption",
},
-- units of inverse speed, because invert is negative
["tsfc"] = {
name1 = "lb/(lbf·h)",
name2 = "lb/(lbf·h)",
symbol = "lb/(lbf·h)",
utype = "speed",
invert = -1,
iscomplex= true,
scale = 1/9.80665/3600,
default = "si tsfc",
link = "Thrust specific fuel consumption",
},
}
return { extra_units = extra_units }