Throwback Thursday: 70 years ago, high school gets a ‘sound mirror’ tape recorder
Dec. 26, 1918 County School Superintendent reports that there are 66 county schools. Four are high schools, four are semi-graded and 52 are rural schools of either first or second ...
What can the 'black box' tell us about plane crashes?
Some have suggested that it stems from Hussenot's device, because it used film and "ran continuously in a light-tight box, ...
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What are black boxes?
Some have suggested that it stems from Hussenot's device, because it used film and "ran continuously in a light-tight box, ...