A 1e-4 B 15 = — 1883 100% F Year of invention g ==! 4910 — 1880-1920 230 FOR = 4950 — — 1840-1880 £., Rese OL 75% | — 1800-1840 3 , Ow 3 10;* o 25 oO 1900 Year 1950 © xs S =D 50% x10°5 Pi ca 2 > | — telephon o Oe Ps telephone uo 5° 5 5+ — radio ° SE a5 g LY 5% |} oO wo { iJ | hee ee “er 7: Ar ica 0.0 S 0% 1875 1900 1925 1950 1975 2000 0 25 50 75 100 125 150 Year Years since invention 1e-6 Cc 2.0 D — Mickey Mouse — Cordell Hull — Marilyn Monroe Se ae — Che Guevara 10° | emestranmerta 1.5 | — Neil Armstrong 3S — Georges Rovault NW, | — Buzz Aldrin fe} mmm edian of people 1) Wy s Barbara Walters = meee Al) i) ‘ SO g or he Jimmy Carter 3 107 Ny, A vi A = } itis ) ae AWS j ef 5 jlaghes Boas oie} = x i) Nh Ge st By PAS a Lo ia NAKA ae We kA One teased 5 oy, \y \ } WA Mh M\ Biswas pion ANE ) —“ MD iA H ae \! 0.0 yy a i 10° [NA WA) NAY Mai 1900 1920 1930 1950 1975 2000 1871 1900 1920 1940 1960 1980 2000 Year Year 1e-6 E 107 -= F 1.0 e — Political figures - A — Authors xe) a iia oe (0:8; — ore ~— £ ~ = life: 73 yrs ie) — Biologists oy 3. =“ —= 5 — Artists 5 8 “1800 7300 — S 0.6 | — Physicists and chemists 3 10° Year ef 3 —— Mathematicians > = i) ~ € éf e G 04 i= hod 5 a] S 2 S ® & 3 0.2 - : = Sf = 4 ; 1800, 700 ————_ a 10° | ear 00 = ee | (0) 34 70 (0) 10 20 30 40 50 60 70 80 Age of the 1865 cohort Age of the cohort