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20th c.

Ether

Submitted by mr46636 on Thu, 02/15/2018 - 12:50

           

Topic Gallery Science Physics Concept Ancient and Medieval 17th c. 18th c. 19th c. 20th c. Europe Mediterranean World North America

Plate tectonics

Submitted by mr46636 on Thu, 02/15/2018 - 12:46

           

Topic Gallery Science Earth and Environmental Science Concept 20th c. Europe North America Asia and Pacific Polar

Greenhouse effect and global warming

Submitted by mr46636 on Thu, 02/15/2018 - 12:39

           

Topic Gallery Science Earth and Environmental Science Physics Concept 19th c. 20th c. Europe North America Asia and Pacific Polar

The age of the earth

Submitted by mr46636 on Thu, 02/15/2018 - 12:34

           

Topic Gallery Science Earth and Environmental Science Physics Concept 17th c. 18th c. 19th c. 20th c. Europe North America

Avogadro's number

Submitted by mr46636 on Thu, 02/15/2018 - 12:20

           

Topic Gallery Science Chemistry Concept 19th c. 20th c. Europe

Katherine Johnson, computer for NASA

Submitted by mr46636 on Fri, 02/02/2018 - 10:16

Katherine_Johnson_at_NASA,_in_1966_-_Original.jpg

Katherine Johnson
Johnson was part of a group of African American women mathematicians who worked as “computers” during the early days of NASA...
Topic Gallery Math Computer Science Engineering Hidden Figures Topic Gallery 20th c. North America

Elmer Imes and infrared spectroscopy

Submitted by mr46636 on Thu, 02/01/2018 - 17:38

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Elmer Imes
The second African American to earn a PhD in physics, Imes’ work in infrared spectroscopy pinpointed the distances between atoms in molecules and helped verify quantum theory...
Topic Gallery Science Physics Hidden Figures Topic Gallery 19th c. 20th c. North America

Mary Agnes Chase, feminist and botanist

Submitted by mr46636 on Thu, 02/01/2018 - 15:01

Mary_Agnes_Chase_(1869-1963),_sitting_at_desk_with_specimens.jpg

Mary Agnes Chase
Chase was both a botanist and an activist for women’s rights to vote...
Topic Gallery Science Biology Hidden Figures Topic Gallery 19th c. 20th c. North America Latin America and Caribbean

Ynes Mexia, plant explorer

Submitted by mr46636 on Thu, 02/01/2018 - 14:46

YnesMexia623.jpg

Ynes Mexia
Mexia found her calling late in life, but her contributions to botany are impressive...
Topic Gallery Science Biology Hidden Figures Topic Gallery 19th c. 20th c. North America Latin America and Caribbean

Carlos Finlay and the Yellow Fever vector

Submitted by mr46636 on Thu, 02/01/2018 - 14:40

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Carlos Finlay
Cuban Doctor Carlos Finlay successfully identified mosquitos as the vector for the transmission of deadly Yellow Fever...
Topic Gallery Science Biology Medicine Hidden Figures Topic Gallery 19th c. 20th c. North America Latin America and Caribbean

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