How the eerie drone of a 'Star Trek' spaceship's engine lulls people to sleep

When a crew member aboard Star Trek‘s USS Enterprise is accused of sabotaging the futuristic ship, a noble Captain Jean-Luc Picard comes the accused traitor’s defense, delivering a grave message to his exploration corps:   

“Have we become so fearful, have we become so cowardly, that we must extinguish a man because he carries the blood of a current enemy?” Picard asks a spaceship tribunal.

It’s a seminal moment in Star Trek: The Next Generation history, and in the background of Picard’s speech — like most every scene aboard the Enterprise — is the omnipresent drone of the starship’s powerful engine.  Read more…

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Source: Mashable | How the eerie drone of a 'Star Trek' spaceship's engine lulls people to sleep