Yards and yards of that would make a very good US type Elevated Railway, nice job. Morning all at least the rain managed to stay away for our operating session yesterday - well mostly nothing enough to cause a head for the Shed for the Trains but at one stage it was a close thing.
To find the density of any object, you need to know the Mass (grams) of the object, and its Volume (measured in mL or cm³). Divide the mass by the volume in order to get an object's Density.Any rise in Covid case will depend on two parameters in a given area:
1. How dense the population is.
2. How dense the population is.