Fredericksburg.com9h
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, ...
The Roanoke Times9h
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, ...