I made a modification that somebody in the comments suggested to make this effect work in EEVEE, and it does. However, when applying the material, the gradient ramp no longer works as it does for Cycles. What would that fix be for EEVEE?
• See Scene.002 in the file below
• The geo node group is set up for both Cycles and EEVEE
because you are instancing some UV spheres on that points we first have to capture the radius from the points and then store that attribute on to the instances:
In your shader setup you are multiplying the radius by 100.0. Let’s say we multiply 0.08 by 100.0 → we get 8.0 as a result. The problem now is, that the Color Ramp clamps the incomming Fac to a value from 0.0 to 1.0. So everything greater than 1.0 just becomes 1.0 and will be red. Instead of the Math - Multiply node we could use a Map Range node to remap our values into that range like so: