Your material works fine when I try it, just need to adjust settings because it blows out everything at the strength you show.  It gives a pretty constant light, but the effect is entirely different form what shrvdavid shows, imo.

Shvrdavid's material works but I had to remove any background except a black background prop. Even then, the effect if far from the point light soft glow he shows above, so am not sure what background he was using (construct?), if any.

Ball prop at 10%, with his material, math value2 at 0.3, this is what I get:

hborre's material on ball prop, again 10% size, strength at 30 instead of 200:

Interesting techniques and I saved the materials for sure, but I can't get the subtle point light effect described.