Quote: (Originally Posted by Peter Steinhoff)
Simon,
First of all I would imagine everyone being in agreement that gas properties do make a difference? Everyone in doubt are free to conduct a dive with a high helium gasmix as a drysuit inflation gas and tell us your empirical findings. Peter
The diffence in conductivity of helium and air is over 6 fold, between air and argon about 1.3 fold. It's hardly the same thing.
It's all about levels of evidence isn't it.
Anecdotal evidence - "this thing that I have spent time and money and effort on makes me feel warmer"
Theoretical evidence - "There is a small difference in a parameter that should make a difference to how warm I feel"
Scientific evidnece - "An extremely well designed and conducted study showed no differrence"
But the scientific evidence is in conflict with the anecdotal evidence - therefore the scientific evidence must be wrong. Flawed study design maybe?
Dave T