I wrote this in notepad thinking I would just be sending an email but now I see that I have to post to a message board. Oh well. Let me preface by saying that I am not an authority on anything. I learned everything from somewhere else.
---
One very important error and one not so important:
You described using a sensitive ohm meter to determine the body's electrical resistivity. This method is incorrect or at least not very good. The method that I have heard described is to create a circuit through a small power supply to the body with the ohm meter in between. ie. power supply positive > ohm meter > left hand > right hand > power supply ground. Sounds scary but the ohm meter has a high impedance which prevents any appreciable amount of current to flow through the body. The high impedance is probably also the reason that just a probe in each hand is inaccurate. Perhaps your meter is sensitive enough to obtain an accurate reading but your visitor's meter may not. This could cause a person to take an inaccurate reading and lull them into a false sense of security regarding the electrical components that they are concerned with.
You stated that you measured 1M ohm with your meter but NIOSH states (according to wikipedia anyway) that under dry conditions the resistance offered by the human body may be as high as 100,000 ohms. If that is correct, you are going around with the idea that you can handle ten times more voltage than you really can. Not safe.
Another error that isn't really critical is that you state there is a necessary amount of voltage to induce Tetanus. Perhaps you thought that that was some clever word play but it doesn't come off that way. Tetanus is caused by some biological crap. Perhaps I should check my thesaurus but that should be reason enough to not use the word tetanus in this context.
As an aside; the reason women are less resistant to shock is because electricity is sexist. Just kidding. The idea that women have less resistance is based on empirical data rather than, well, something more sciency. There are physiological differences between the average man and woman that affected the empirical data but it's these differences that affect resistivity rather than sex. Just think of the body as a human resistor (or capacitor) comprised of protein, liquid, salt, fat etc. A short sweaty fat man with short fat arms makes a better conductor than a tall lean woman. And then there are kids; their short little arms and pudgy little bodies don't stand a chance.
---
One very important error and one not so important:
You described using a sensitive ohm meter to determine the body's electrical resistivity. This method is incorrect or at least not very good. The method that I have heard described is to create a circuit through a small power supply to the body with the ohm meter in between. ie. power supply positive > ohm meter > left hand > right hand > power supply ground. Sounds scary but the ohm meter has a high impedance which prevents any appreciable amount of current to flow through the body. The high impedance is probably also the reason that just a probe in each hand is inaccurate. Perhaps your meter is sensitive enough to obtain an accurate reading but your visitor's meter may not. This could cause a person to take an inaccurate reading and lull them into a false sense of security regarding the electrical components that they are concerned with.
You stated that you measured 1M ohm with your meter but NIOSH states (according to wikipedia anyway) that under dry conditions the resistance offered by the human body may be as high as 100,000 ohms. If that is correct, you are going around with the idea that you can handle ten times more voltage than you really can. Not safe.
Another error that isn't really critical is that you state there is a necessary amount of voltage to induce Tetanus. Perhaps you thought that that was some clever word play but it doesn't come off that way. Tetanus is caused by some biological crap. Perhaps I should check my thesaurus but that should be reason enough to not use the word tetanus in this context.
As an aside; the reason women are less resistant to shock is because electricity is sexist. Just kidding. The idea that women have less resistance is based on empirical data rather than, well, something more sciency. There are physiological differences between the average man and woman that affected the empirical data but it's these differences that affect resistivity rather than sex. Just think of the body as a human resistor (or capacitor) comprised of protein, liquid, salt, fat etc. A short sweaty fat man with short fat arms makes a better conductor than a tall lean woman. And then there are kids; their short little arms and pudgy little bodies don't stand a chance.