Everyman, be he rich or poor, is fond of building castles in the air. The poor man dreams of prosperity, the rich man of increasing wealth. Nor need we wonder at this, for all men are forever under the magic spell of

hope. As the poet has written: Hope springs eternal in the human breast. In youth it blooms like flower,

delicate and fragrant, shedding over the golden years of childhood the sweetness of its perfume. To the old it

offers strength in hours of weariness. But air in an unstable element; castles in the air are worse than houses

built on sand. They are frail structures, more delicate than a spider’s web. summarise​

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation