Does human body capacitance change when floating vs. standing?

[mascail]

Hello guys,

I read some articles recently about how touchscreens work by using the capacitance in human bodies. I'v seen the human body capacitance is quoted at around 100pf, is it the same when the human body is floating in mid-air, as if it is standing on the ground? My goal is to detect through a capacitance sensor, (?which detects slight changes of capacitance in the body, when the body is not standing on the ground anymore?) or something like that, if a body is standing on the ground or floating mid-air.

 

[GabDX]

Please teach me how to float in mid-air.

 

[Nugatory]

Please teach me how to float in mid-air.

For this particular problem, it would suffice to suspend the human from a long insulating string.

 

[mishima]

NASA has programs where schools design small experiments for astronauts on ISS to try out. This might be a good one if you could think of a way to quantify response of a touchscreen. Certainly seems like good information to have.

NASA National Lab

 

[mascail]

The human probably doesn't really need to float in mid-air. I think it would be enough if the measurements would be taken when he jumps.

 

[Borek]

I guess standing barefoot on a wet grass and standing on a dry wooden floor would give completely different results.