These walls all fell into decay long since; at places they were used as brick quarries, and finally the great reforming governor, (1868-1872), Midhat Pasha, following the example set by many European cities, undertook to destroy them altogether and utilize the free space thus obtained as a public park and esplanade.
The water-holding capacity of a soil depends upon the amount of free space between the particles of which it is composed into which water can enter.
Thus the distribution of electricity on a sphere in free space must be uniform, and all parts of the charge are at an equal distance R from the centre.
We have first to determine the mode in which electricity distributes itself on a conducting ellipsoid in free space.
Thus for instance the capacity in free space of a sphere 2 metres in diameter would be 100/900,000 = 1/9000 of a microfarad.