The hashtag makes clear that this was a reference to the show Marvel's Agents of S.H.I.E.L.D., which isn't something I watch regularly. It seems that in last week's episode, a particular magic sound ...

When a musician strums a guitar, the vibration of the strings creates sound waves that human ears hear as music. When a guitar string is plucked, it moves a certain distance, depending on how hard the ...

A wheeled cart with springs attached oscillates on a track. A motion detector connected to a computer helps graph the cart's motion. Knowledge of Logger Pro is essential. If the graph of cart motion ...