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Thread: to within 3?

  1. #1
    Eway is offline Senior Member
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    Default to within 3?

    "Woman can detect the source of a sound to within 3 by moving her head."

    I can easily understand that "woman can detect the source of a sound by moving her head." But what does "to within 3" mean?

  2. #2
    Mister Micawber's Avatar
    Mister Micawber is offline Key Member
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    Default Re: to within 3?

    .
    Consider a woman's head in the center of a horizontal circle with 0 degrees directly in front of her and 180 degrees directly to her rear. If she hears a sound directly from her right (from 90 degrees), she can, by moving her head somewhat, pinpoint the sound source as coming from a direction somewhere between 87 and 93 degrees.
    .

  3. #3
    Eway is offline Senior Member
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    Default Re: to within 3?

    Thanks a lot. I did a little drawing by following your instructions and I got it!

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