People need to learn how to conduct meaningful experiments.
You keep everything constant, e.g. you don't apply it to the head of one person and to the arm of another, don't use different devices, rooms, times, etc.
i can't see the setting on his DMM, but i suspect he has it set to ohms/continuity.
the reason he is getting any reading at all, is because the human body has some capacitance, so the 9V power supply of the DMM is actually able to push a few electrons into your body.
as your body fills up with electrons, it reaches its full capacitance, and it becomes more difficult for the 9V power supply to push more electrons into the body.
thats why the "current" starts higher, and then goes lower.
you can replicate this experiment on yourself with any DMM.
swap the leads, and watch the meter bleed the electrons back out of your body.
People need to learn how to conduct meaningful experiments.
You keep everything constant, e.g. you don't apply it to the head of one person and to the arm of another, don't use different devices, rooms, times, etc.
i can't see the setting on his DMM, but i suspect he has it set to ohms/continuity.
the reason he is getting any reading at all, is because the human body has some capacitance, so the 9V power supply of the DMM is actually able to push a few electrons into your body.
as your body fills up with electrons, it reaches its full capacitance, and it becomes more difficult for the 9V power supply to push more electrons into the body.
thats why the "current" starts higher, and then goes lower.
you can replicate this experiment on yourself with any DMM.
swap the leads, and watch the meter bleed the electrons back out of your body.