# 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.

Jul 18, 2013
13,152
3,628
? 20Khz = 1/50μs?
Max.

3. ### Neil Groves Thread Starter Member

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

Neil.

4. ### #12 Expert

Nov 30, 2010
17,893
9,310
I'm considering a new signature line: "Stupid strikes everybody from time to time."

5. ### WBahn Moderator

Mar 31, 2012
20,225
5,749
Units.

1 cycle = 50ms

$
f = \frac{1cycle}{50ms} \cdot \frac{1000ms}{1s} \cdot \frac{1Hz}{\frac{1cycle}{1s}} = 20Hz
$

6. ### Neil Groves Thread Starter Member

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

Neil.

7. ### WBahn Moderator

Mar 31, 2012
20,225
5,749
And some of us more frequently than others, especially as I ... err, I mean they... grow older.