Bonus (each is worth 7.5 pts) a) derive the maxwell equations in time domain and express them in the phasor representation b) write the elcctric field and magnctic field components of an elliptically polarized plane emw in a lossless medium as an example (you can express them in formula form or as a specific emw with specific numerical parameters, such as medium characteristic parameters, amplitude, frequency, etc.) c) sketch the perpendicular and parallel reflections. you should show the incident, reflected, and transmitted wave correctly. give an outline on how to find reflection and transmission coefficients. (suppose two lossless media and oblique incident beam) d) what is brewster angle? sketch the necessary figures, explain the physical event, and derive its formula

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

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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