Standard Atmosphere properties

AttributeValue
namestandardAtmosphere
commentstandard temperature and pressure (STP)
descriptionSpecification of standard atmosphere
dryAdiabaticLapseRate9.8*c/km
dryAdiabaticPressureHead-0.116*km
moistAdiabaticLapseRateTypical5.0*c/km
molecularWeight28.966*au
pressure1.0*atm
seaLevel0.0*km
specificGasConstantDryAir287*j/kg/k
specificGasConstantWaterVapor462*j/kg/k
specificHeatRatio1.4
temperature70*f
temperature273.15*k

Water properties

AttributeValue
namewater
commentfresh water properties
specificHeat4.187*kj/kg/k
thermalConductivity0.609*w/m/k
deltaHvap9717.1*cal
deltaSvap26.04*cal/k
molecular_weight18.015268*au

Solar

AttributeValue
namesolar
commentaverage sunshine
averageAlbedo0.31
averageSolarInsolation1366*w/m^2

Physical Constants

AttributeValue
namephysicalConstants
commentcommonly used physical constants
atomicUnit1.66053886e-24*g
avogadrosNumber6.02214129e+23*n
boltzmannConstant1.38065e-23*j/k
dielectricConstant8.854187e-12*fd/m
electricalCharge1.60218e-19*coulombs
faradaysConstant96485.3383*coulombs/mol
gasConstant8.314472*j/k/mol
gasConstant1.9858775*cal/k/mol
gravity9.80665*m/s^2
gravity32.174049*ft/s^2
planckConstant6.62607e-34*j*s
speedLight300000000.0*m/s
stefanBoltzmann5.670373e-8*w/m^2/k^4

Units suitable for conversion

AttributeValue
All Unitssymbolic
areaft^2
aream^2
densityg/cm^3
densitykg/dm^3
densitykg/m^3
densitylb/ft^3
densitymg/micron^3
densityoz/in^3
densityton/km^3
dimensionlesspercent
lengthcm
lengthft
lengthin
lengthkft
lengthkm
lengthm
lengthmicron
lengthmi
lengthmil
lengthmm
lengthnm
lengthyd
massg
masskg
masslb
pressureatm
pressurebar
pressuremillibar
pressurempa
pressuremtorr
pressurepa
pressurepsi
pressuretorr
temperaturec
temperaturef
temperaturek
temperaturer
timeday
timedecade
timehr
timemics
timemin
times
timeyr
calendarmonth
calendaryr
calendarday
calendardecade
volumecm^3
volumem^3