Comment Comment by JProthero Excellent. I give this 10^14 / 10^14.The pedant in me wants to point out that they are now known to have some mass and do interact a bit, but this was written in 1960. parent JProthero 5 years ago
The pedant in me wants to point out that they are now known to have some mass and do interact a bit, but this was written in 1960.