Matter Mass Density Formula - 8.36x10^-33T^4

smitty8371
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does anyone know the formula for matter mass density i know for photon density is row=8.36*10^-33 * T^4
 
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What sort of mass? Without context usual mass density is simply the mass you have over the volume it occupies.
 

Thread 'Modeling a graph that shows age in relation to depth of an ice sample'

To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
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