Replies to post #92422 on North Bay Resources Inc (NBRI)

[es1]

Yes and if the gold that was visible was .0000001 ounces the 5 pounds was not worth the water it took to push it out. and if it was 100 ounces its a record... But it isn't EITHER. It is simply "visible.

And that is the entire problem with the hype. "Visible" is 1 grain of sand in 5 pounds.

So we are back to what they stated. A Terrace is 60 ft from audit level somewhere inside the mountain

so FYI...

1. Finite size of pupil sets upper limit on eye's resolution

The resolution of the eye is the smallest object the eye can see. This is limited by the diffraction limit, which is approximated by the formula,

\theta\approx1.22\times\frac{\lambda}{D}

, where \theta is the angular size of the object
, \lambda is the wavelength of visible light
and D is the diameter of the pupil.
The angular size is just the ratio of the object's size versus the distance to the object.

The normal pupil size of a human eye is 4mm, which sets a minimum angular resolution of the eye at 2\times10^{-4}rad. Obviously, we want to put small objects as close to our eyes as possible to be able to see them, but there is a minimum distance for comfortable viewing which is roughly at 25cm.

This works out to a size of 0.04mm if the human eye is diffraction-limited, but unfortunately, our eyes do not work at this higher limit. However, a quoted figure for the smallest resolvable size is 0.1mm, just double the figure estimated here, showing that the diffraction limit is a crucial factor in visual resolving power.

.1 mm is about the size of the width of a human hair


That is visible gold.