I need to place say 100 seperate Devices, as equi-spaced as possible on the Surface of a Sphere.

I am a little confused as to how to Calculate their distance apart - in either straight-line measurements, or in measurements along the surface of the Sphere.

What I really need is a Formula for Calculating the Distance - given a known Radius.

This is the case for 100 Devices.

And, a Fomula for calculating the number of Devices spaced a fixed distance apart, on the surface of a known Sphere.

This latter case involves putting several Devices, which are to be 8 Units apart - on the surface of a Sphere of Radius 150 Units.

I originally calculated this on the basis of a circle of Radius 150 Units - then a number of circles, which would be 8 Units apart at their furthest.

However - I now realise that I am seriously in error - because although they will e equally spaced around each circle - they will get closer together in the other direction, the nearer they get to the point of intersection of the circles.

I realise that Iam using TOO MANY Devices - a lot of these being spaced much less than 8 Units apart in one of their distances.

I will not go into why I need to do these Calculations - but it is important.

However, it is way outside my understanding of Mathematics.

I was Educated to Degree Level - but 3-D Geometry of this kind never came into our Syllabus.