Ohm's Law-atom: electron - voltage - current - impedance - resistance - resistor - direct current (DC) - Kirchhoff's Laws for current and voltage - alternating current (AC) - hertz -frequency - phase - power - true power - apparent power - reactive power - peak - peak-to-peak - root-mean-square (rms) - energy - joule - Btu. Fields and Signals: flux - electrostatic field - dielectric material - magnetic field - electromagnetic field - circuit - signal - polarity -bipolar signaling - unipolar signaling - carrier - antenna - transducer - analog - digital -diode oscillator. Modulation: modulation phase modulation - frequency modulation - phase-shift keying (PSK) - frequency-shift keying (FSK). Wavelengths: wavelength - signal-to-noise ratio - electromagnetic radiation spectrum - narrowband broadband - wideband - bandwidth -attenuation - dense wavelength division multiplexing wavelength switching - wavelength-division multiplexing. Noise: noise - audio noise - white noise and pink noise. Frequency: frequency - ELF - AFRF. Conversions: digital-to-analog conversion - analog-to-digital conversion. Transistors: transistor - semiconductor - amplifier - bipolar transistor - field-effect transistor - capacitor - inductor. Circuits: circuit - integrated circuit (IC) - CMOS - logic gate -LED - laser diode - optoisolator - surge suppressor - EMI - crosstalk entropy. Antenna Types: antenna - feed line - coaxial antenna  - dipole antenna - dish antenna - horn antenna -ground-plane antenna - waveguide