The following two lines generate almost exactly what I want:
pts = RandomPoint[Rectangle[], 250]
Graphics[{ImageSize->Small,PointSize[Tiny], Point[pts]}]
However, I want to be able to specify specific sizes for the points (i.e. diameter of 1.5 microns on a square that is 1000 um x 1000 um). Is there a way to do set these parameters?
If not, is there a good function in Python that would allow me to randomly plot circles of specific diameters on squares of specified size?