Energy bubble

Energy Bubble

General and vague description Roy Masters uses as he describes Sam Brown's farm :

"Sam's farm was not engulfed by a complete Energy bubble, instead it only had a 20 meter tall energy fence. "

Energy bubbles or spherical constructs of energy (Form fields) are in widespread use thruought the Union (and with many similar advanced societies)

They may be insubstantial for projection purposes (generally known as form fields) Opaque privacy bubbles or force fields that create barriers and shields.