Re: [Vo]:Blondlot on observing N-rays with the naked eye.

[Terry Blanton]

On Sat, May 28, 2011 at 2:16 PM, Mark Iverson <zeropo...@charter.net> wrote:
>
> It is widely known that the 'rod' cells in the retina, which are responsible 
> for seeing in low light
> levels,

Indeed, a single photon can cause a rod cell to fire.

T