Introduction to the Vacuum Concrete Processes

We have become accustomed to the pressure of the atmosphere in which we live and fail generally to realise the latent power it represents. But we have a simple means of recalling it to mind. If we consider a mountain lake, its waters also represent potential energy. To release this energy, all that need be done is to install a suitable plant (a hydro-electric station) at a lower point, where the waters of the lake exercise considerable pressures which can be utilised in work. In the same way, to “awake” atmospheric energy, it suffices to provide a source of low pressure (a vacuum unit) in relation to which the atmosphere acts as an infinite reservoir of compressed air.

I. Leviant