Shutter speeds are typically measured in fractions of a second, when they are under a second. For example 1/4 means a quarter of a second, while 1/250 means one two-hundred-and-fiftieth of a second or four milliseconds.
emotional time, listening to music induces release of dopamine in the brain striatum. ... A study showed that people see happy faces when they listen to happy music, but if they happen to listen to sad songs, they are likely to see sad faces
