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Category: Science Technology and Math

One woman watches as another examines with a magnifying glass an ornate, decorative image on a printed page

Primary Sources in the Science Classroom: Signals from Mars? Venus?

Posted by: Cheryl Lederle

Tesla, Guglielmo Marconi, and Thomas Edison were among the respected scientists who believed one of our neighbors was trying to contact us. A news article "Hello, Earth! Hello!" published on March 18, 1920, details the history of signals, possibly electromagnetic, picked up by Marconi and verified by scientists around the world, including Edison and Tesla. All three agreed the signals were deliberately sent from another planet. Based on the information they had, this was a realistic inference.

One woman watches as another examines with a magnifying glass an ornate, decorative image on a printed page

Celebrating Edweard Muybridge: Documenting Movement and Creating Art

Posted by: Danna Bell

It is hard to believe that until Edweard Muybridge began his study of animal locomotion with photography in the late 19th century, we were limited to only what the eye could see or what was in a single photograph. In celebration of Muybridge’s birthday, the Library of Congress has uploaded a number of Muybridge’s Animal Locomotion images from its collections into Flickr.