time to frequency conversion

Discussion in 'Math' started by Neil Groves, Sep 24, 2013.

  1. Neil Groves

    Thread Starter Member

    Sep 14, 2011
    125
    3
    ok I just don't get it..............

    1/time = frequency right?

    1/2ms = 500Hz but

    1/50ms = 20Hz except that it doesn't, it actually = 20KHz so where have my 3 zero's gone?

    Neil.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
    2,375
    ? 20Khz = 1/50μs?
    Max.
     
  3. Neil Groves

    Thread Starter Member

    Sep 14, 2011
    125
    3
    ooops.....Thankyou Max lol

    my bad!

    Neil.
     
  4. #12

    Expert

    Nov 30, 2010
    16,318
    6,818
    I'm considering a new signature line: "Stupid strikes everybody from time to time.":D
     
  5. WBahn

    Moderator

    Mar 31, 2012
    17,757
    4,800
    Units.

    1 cycle = 50ms

    <br />
f = \frac{1cycle}{50ms} \cdot \frac{1000ms}{1s} \cdot \frac{1Hz}{\frac{1cycle}{1s}} = 20Hz <br />
     
  6. Neil Groves

    Thread Starter Member

    Sep 14, 2011
    125
    3
    It affects me on a regular basis ha ha :p

    Neil.
     
  7. WBahn

    Moderator

    Mar 31, 2012
    17,757
    4,800
    And some of us more frequently than others, especially as I ... err, I mean they... grow older. :D
     
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