To be picky a little here - I'd think your weight doesn't change there.
Your body probably moves a little though, in response to the pressure
change when your heart beats - and that's what they measure;  your
inertia's effected by the pulse, and oscillates <G>  Interesting info!

Same effect as if you drop a hammer in an airplane - You can NOT use the
oscillation of measured weight as an antigravity drive AFAIK, you CAN
measure the change to tell that the hammer's been dropped, though...

  Mark

Patrick J wrote:
> I saw a VERY cool way to measure the hearbeat.
> When the heart beats, your weight change a little.
> Very very little, but it is detectable (I saw the curves live on TV)
> The person just steps up on the scale and as well as
> measuring their weight you measure the pulse !
>
> A more common way is to send, usually red, light through
> one fingertip and detect light variations and get the pulse that way.
>
> Or it should be possible to use a microphone and 'listen' to the
> heart and detect the heartbeat/pulse
>
> >Dmne: Heart pulse
> >Hi everyone
> >is there any circuit that i can use to measure, detect, heart pulse?

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