https://padlet.com/17andrewm/Bookmarks WWI Padlet Andrew Miller, Casey 8th Grade en-us 2017-02-16 18:05:13 UTC 2017-05-17 11:32:37 UTC hello@padlet.com 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154413185 2017-02-16 18:24:34 UTC https://padlet.com/17andrewm/Bookmarks/wish/154413185 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154413614 2017-02-16 18:25:34 UTC https://padlet.com/17andrewm/Bookmarks/wish/154413614 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154657638  In the early days of aviation, there was no means to stay in contact with airborne planes other than physical gesturing. Since planes were used frequently throughout World War I, the U.S. Army began developing the first two-way radios for aircraft in 1915 to avoid midair collisions.]]> 2017-02-17 17:55:53 UTC https://padlet.com/17andrewm/Bookmarks/wish/154657638 17caseyb https://padlet.com/17andrewm/Bookmarks/wish/154657776 2017-02-17 17:56:24 UTC https://padlet.com/17andrewm/Bookmarks/wish/154657776 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154657853 After the creation of a microphone-fitted flight helmet at the end of 1916, the first human voice was transmitted from an in-flight plane to a ground controller a year later; this laid the early foundation for air traffic control.]]> 2017-02-17 17:56:43 UTC https://padlet.com/17andrewm/Bookmarks/wish/154657853 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154658520 2017-02-17 17:58:58 UTC https://padlet.com/17andrewm/Bookmarks/wish/154658520 17andrewm https://padlet.com/17andrewm/Bookmarks/wish/154658521
The war ended in 1918, but the development of this new communication system continued. In 1921, London’s Croydon Airport was the first to introduce air traffic control, and America followed suit in 1930]]> 2017-02-17 17:58:59 UTC https://padlet.com/17andrewm/Bookmarks/wish/154658521 17caseyb https://padlet.com/17andrewm/Bookmarks/wish/154659265 2017-02-17 18:01:57 UTC https://padlet.com/17andrewm/Bookmarks/wish/154659265