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User Journal

Journal: Life expectancy data

Journal by coopex
Ages = [0,1,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100;]
NumberSurviving= [100000,99303,99180,99105,99008,98672,98204,97740,97196,96419,95255,93563,91188,87711,82607,75335,65310,52178,36304,20052,8028,2095;]
Fitted Quadric curve to NumberSurviving*Ages = [0.00057514,-0.18787,14.659,-403.48,1.014e+005;]
User Journal

Journal: A sorted list of the elements in the earth's crust

Journal by coopex

For the first time, on the internet, a list of the most common elements, with their abundance in ppm by weight.

O 460000
Si 270000
Al 82000
Fe 63000
Ca 50000
Mg 29000
Na 23000
K 15000
Ti 6600
C 1800

H 1500
Mn 1100
P 1000
F 540
S 420
Sr 360
Ba 340
V 190
Cl 170
Cr 140

Zr 130
Ni 90
Zn 79
Cu 68
Rb 60
Ce 60
La 34
Nd 33
Co 30
Y 29

Sc 26
N 20
Ga 19
Li 17
Nb 17
Ge 14
Pb 10
B 8.7
Pr 8.7
Dy 6.2

Sm 6
Th 6
Gd 5.2
Hf 3.3
Br 3
Er 3
Yb 2.8
Sn 2.2
As 2.1
Be 1.9

Cs 1.9
Eu 1.8
U 1.8 = 53rd most common element in earth's crust
Ta 1.7
Ar 1.5
Ho 1.2
Mo 1.1
W 1.1
Pm 1
From here on ppb
Tb 940

Lu 560
Tl 530
I 490
Tm 450
Sb 200
In 160
Cd 150
Ag 80
Hg 67
Se 50

Pt 37
Bi 25
Pd 6.3
He 5.5
Au 3.1
Ne 3
Re 2.6
Os 1.8
Ru 1
Te 1

Rh .7
Ir .4
Kr .15
Xe .02
Ra .0001
Pa .00001

Data not avaliable for Tc, Po, At, Rn, Fr, Ac

What is wanted is not the will to believe, but the will to find out, which is the exact opposite. -- Bertrand Russell, "Skeptical Essays", 1928

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