If you find that the solution is an electron stealer,

you put a plus sign in front of the voltage,

and if it's an electron donor,

you put a minus sign in front of it,

and then you convert the voltage that you measure

with a logarithmic scale going from zero to 14

and call that pH.

So plus 400 millivolts of electron stealer

is the same as a pH of zero,

whereas minus 400 millivolts of electron donor

is the same thing as a pH of 14.

And if it's neutral, if it's neither electron donor

or electron stealer, then that's a pH of seven.

So when we say that cells must run at a pH of 7.35 to 7.45,

we are saying cells must run between minus 20 and minus

25 millivolts.

Well, that was a wowser for me.

Guess what?

Cells need energy to work.

That makes sense.

Now, by the way, people sometimes

get confused with these numbers,

...