PSB said they collaborated with Dolby Labs to achieve
very precise frequency and directivity response that perfectly matches Dolby's specifications.
Not exact matches
Using a stack of about 80 alternating layers of
precise thickness, Shen says, «We are able to reflect light at most of the angles, over a
very broad band [of colors]: the entire visible range of
frequencies.»
Such a comb can form a bridge spanning the huge
frequency gap from microwaves to visible light:
very precise microwave measurements can, with an optical comb, produce equally exact data about light.
Using these direct electrical recordings, the team was able to test the level of high
frequency neuronal activity (a marker of neurons firing) in this region, a
very precise measure which captures activity tied to cognition processes lasting mere hundreds of milliseconds.
When G is
very small, the map is extremely
precise, the approximate length L (G) accounts for a wealth of high -
frequency details that are surely outside the realm of geography.