Valid names for the equinoxes?

Vernal equinox, autumnal equinox, march equinox, September equinox, northward equinox and southward equinox are the names for the equinoxes.

Explanation:

There are different names which are named depending on the month of the year when these equinox occurs and depends upon direction of motion of the sun. Equinox is a point where day time and night time have exactly equal length of time.

Equinox occurs twice in a year and this occurs when earth's equator passes through the sun. We can say that equinox occurs when the sun’s center is directly above the equator.

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