Einstein's Greying Rise Time
with Physiological Factors in Aging

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Albert Einstein (March 14, 1879 - April 18, 1955).
See also Einstein Timeline and Wikipedia/Albert_Einstein.
An adult's hair is typically 50% grey by age 50. (Photo sample via Google Search.) Greying typically starts at 35, proceeding to the 50% point by 50, and by crude linear extension modeling to 100% grey by 65, somewhat following the death rate. Aging Record Holder Jeanne Calment, George Washington, and Albert Einstein were quite grey by 60. See Photoshop Tutorial on Age Progression.

(01) Einstein at 14 in 1993.
Albert Einstein 1879-1955 (Einstein videos)

(02) Einstein at 24 in with his first wife, Mileva.
Einstein Revealed [1/4]
(Nova video)


Death Rate for Australian Males.

(03) Einstein at 25 with family.

(04) Einstein at 26 in 1905.
Einstein's 10% to 90% Greying Rise
Time 2.2T was about 17.3272 years.

Albert Einstein's Miracle Year (Einstein's Annus Mirabilis) was 1905, the same year he got his doctorate. This year he published his papers on the brownian motion, special relativity, and the quantum theory of the photoelectric effect. See Einstein Chronology for 1905.

Einstein's Greying Charges Up
The death rate curve suggests that greying might resemble an exponential step process, like the charging of a capacitor through a resistor, with a time-dependent 0 to 1 scale running like

f(t - t0) = [1 - exp((t - t0)/T)]u(t - t0),

where t0 is the start time for the time-shifted unit step function

u(t - t0)

and T is the process time constant. Inspection of Einstein's photos below suggests f = 0.05 at t = 35 and f = 0.95 when t = 59. Solving the resultant system of two equations in two unknowns for T and t0, we easily find, after simple algebra and application of exponential logarithms, that T = 7.876 years, t0 =34.596 years. In RC cicuit theory the rise time from 0.1 to 0.9 is 2.2T = 17.3272. Note 59 - 35 = 24 years is the process time to move from 0.05 to 0.95, that is, from 5% grey to 95% grey.

(05) Einstein at 32 in the Solvay Physics Conference of 1911,
seemingly surrounded by keen students of the moon in mustaches.

Einstein also attended the Solvay Physics Conference of 1927 (video) on electrons and photons at the age of 48.

(06) Einstein at 40 with His 2nd Wife Elsa.


(07) Einstein at 42 in 1921.
Press for Einstein the year before
at 41 in 1920
.



(08) Einstein at 42 in New York City.

(09) Einstein at 42 with tie.
Einstein received the Nobel Prize
in Physics
at this time in 1921.

(10) Einstein at 50 with violin.

(11) Einstein at 50 with Max Planck.

(12) Einstein at 61 receiving US Citizenship.

(13) Einstein at 52.

(14) 52.2956 < Einstein < 52.3805 with Indian Poet
Tagore in July, 1930.

Press for Einstein in an Indian Headdress at Hopi House near the Grand Canyon.
(15) Einstein at 52 by the Grand Canyon.

Press for Einstein in his black leather jacket with biography by Scienceworld/Wolfram.
(17) Einstein at 59 in Princeton, New Jersey.

(16) Einstein at 54 riding on a bicycle
in Santa Barbara, California. (Press for 56.)

Video: Einstein Comes to America (1933 film, Einstein 54.).
Press for Einstein's 1939 letter to President Roosevelt regarding the possibility of the development of nuclear weapons.
(18) Einstein at 60 with Leo Szilard,
composing the atomic bomb letter of 1939.

Einstein's image appears in an atomic fireball
in the video Einstein & Atomic Bomb Development.
See stock photos of 60 year olds.

(19) Einstein at 61 in U.S. Citizen Swear-In.
Aged Scientists Speak in the 60-minute video
The Moment in Time: The Manhattan Project.

(20) Einstein at 62 with violin. See also
Video: Einstein Talking in a Garden in 1943 at 64.

(21) Einstein at 66.
Press for enlarged photo.
(22) Einstein at 68.

(23) Einstein at 68 in 1947.


(24) Einstein at 71.


(25) Einstein at 72.

(26) Einstein at 72 showing his tongue.

Compare: 85 years in 40 seconds
Also see Index/Age Progression.
Frame secondAge (years)
12.125
24.250
36.375
48.500
510.600
612.750
714.875
817.000
919.125
1021.250
1123.375
1225.500
1327.625
1429.750
1531.875
1634.000
1736.125
1838.250
1940.375
2042.500
Frame secondAge (years)
2144.625
2246.750
2348.875
2451.000
2553.125
2655.250
2757.375
2859.500
2961.625
3063.750
3165.875
3268.000
3370.125
3472.250
3574.375
3676.500
3778.725
3880.750
3982.875
4085.000

(27) Einstein at 75 in his home office on Mercer Street in Princeton, N.J.,
a victim of replicative senescence.

Einstein died of cardiovascular disease on April 18, 1955, the primary cause of death in his age group, at 76.096. Note that American males still most numerously die in the age cell 75-79 according to Mortality Charts. The death news story (video) was the first radio news I remember as I approached my 6th birthday.

Press for YouTube movie (01) of Albert Einstein in old age.

The Last Word from Einstein, however, was the 5th Edition of The Meaning of Relativity,
published in 1956, which contained his final work on unified field theory as a new postscript.


Above: Causes of Death in New York City circa 2000 AD.




Press for Jim Green's Home Page.
(28) Einstein and Green "Engineer".
See Green's Unified Quantum Field Theory Summary,
which includes a summary of Green's General Relativity Overthrow Theorems,
and Wikipedia/History of Physics.

Albert Einstein (March 14, 1879 - April 18, 1955) 76+ years. See Einstein Timeline and Wikipedia/Albert_Einstein.

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