Today in History – March 31, 1889 – Eiffel Tower opens. The 300m Eiffel Tower was commissioned to commemorate the French Revolution. Amazingly, all of the elements were prepared in Gustav Eiffel’s factory located at Levallois-Perret on the outskirts of Paris. There were 18,000 pieces used to construct the Tower. Each piece was designed and [...]

[Read more →]

Today in History – March 27, 1933 – Polyethylene is discovered. Polythene is also known as polyethene or polyethylene. It was discovered in 1933 by Reginald Gibson and Eric Fawcett, two scientists working at ICI’s research laboratory at Winnington, Durham, who accidentally discovered the white, waxy solid while attempting to react ethylene with benzaldehyde in [...]

[Read more →]

Today in History – March 25, 1954 – Production of RCA’s first color television sets. RCA based their color television on the 1947 patent application of Alfred Schroeder, for a shadow mask CRT. Their system passed FCC approval in late 1953 and sales of RCA color televisions began on March 25, 1954. Yet, as is [...]

[Read more →]

  K-12 Engineering Thumbnails. Click on image for catalog record.         Engineers in Action Thumbnails. Click on image for catalog record.   Technology Thumbnails. Click on image for catalog record. The Engineering Pathway has initiated a photo competition to highlight image thumbnails of its cataloged resources. The main K-Gray pages will use [...]

[Read more →]

  Engineers in Action Thumbnails. Click on image for catalog record.     Technology Thumbnails. Click on image for catalog record. The Engineering Pathway has initiated a photo competition to highlight image thumbnails of its cataloged resources. The higher education Disciplinary Community pages will have two of these images at the top — one action [...]

[Read more →]