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Science Year by Year 1900-1909 - Page 2

This is a list of major discoveries and inventions from the book Popular Science: Science Year by Year published by Scholastic. How many of these did you know happened in this time period?
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Page 2 of 2
41
First Diodie/Vacuum Tube/Fleming Valve Invented (1904)
First Diodie/Vacuum Tube/Fleming Valve Invented (1904)
42
Taxicabs With Meters Introduced (1904)
Taxicabs With Meters Introduced (1904)
43
Contrast X-Ray Imaging (1905)
Contrast X-Ray Imaging (1905)
44
Einstein's Special Theory of Relativity (1905)
Einstein's Special Theory of Relativity (1905)
45
Discovered X & Y Chromosomes/Sex Chromosomes (1905)
Discovered X & Y Chromosomes/Sex Chromosomes (1905)
46
Barringer Metorite Crater in Arizona (1905)
Barringer Metorite Crater in Arizona (1905)
47
Safety Glass Developed for Automobile Windshields (1905)
Safety Glass Developed for Automobile Windshields (1905)
48
Cause of Syphilis Identified (1905)
Cause of Syphilis Identified (1905)
49
First Direct Blood Transfusion (1905)
First Direct Blood Transfusion (1905)
50
Silencer for Guns Invented (1905)
Silencer for Guns Invented (1905)
51
First U-Boat Submarine Launched (1905)
First U-Boat Submarine Launched (1905)
52
Tyrannosaurus Rex Named (1905)
Tyrannosaurus Rex Named (1905)
53
John Gabel Automatic Entertainer (1906)
John Gabel Automatic Entertainer (1906)
54
Kellogg's Corn Flakes Introduced (1906)
Kellogg's Corn Flakes Introduced (1906)
55
Dreadnought Launched (1906)
Dreadnought Launched (1906)
56
Rocks Dated Using Radioactivity (1907)
Rocks Dated Using Radioactivity (1907)
57
Incandescent Tungsten Filament Lamps (1907)
Incandescent Tungsten Filament Lamps (1907)
58
First Air Pump for Divers (1907)
First Air Pump for Divers (1907)
59
Model T Sold (1908)
Model T Sold (1908)
60
Skin Testing for TB (1908)
Skin Testing for TB (1908)
61
Telescope at Mounta Wilson Solar Observatory (1908)
Telescope at Mounta Wilson Solar Observatory (1908)
62
Tower Crane Developed (1908)
Tower Crane Developed (1908)
63
Neanderthal Man Reconstructed (1908)
Neanderthal Man Reconstructed (1908)
64
Cellophane Invented (1908)
Cellophane Invented (1908)
65
Geiger Counter Invented (1908)
Geiger Counter Invented (1908)
66
Holt Co. Moving Treads Tractor (1908)
Holt Co. Moving Treads Tractor (1908)
67
Watercooler and Paper Cups Invented (1908)
Watercooler and Paper Cups Invented (1908)
68
Fossils From Cambrian Era Found in Rockies (1909)
Fossils From Cambrian Era Found in Rockies (1909)
69
Gasoline Powered Boats (1909)
Gasoline Powered Boats (1909)
70
Electric Toaster (1909)
Electric Toaster (1909)
71
Bleriot Flies the English Channel (1909)
Bleriot Flies the English Channel (1909)
72
Ph Scale Invented (1909)
Ph Scale Invented (1909)
73
First Rubber-Coated Sports Shoe (1909)
First Rubber-Coated Sports Shoe (1909)
74
Discovered Earth's Crust Overlies Denser Mantle Below Surface (1909)
Discovered Earth's Crust Overlies Denser Mantle Below Surface (1909)
75
World's First Plastic, Bakelite (1909)
World's First Plastic, Bakelite (1909)
76
First Hydrofoil (1909)
First Hydrofoil (1909)
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