Throughout the years as an engineer, I have needed to research topics on engineering, physics, chemistry, mechanics, mathematics, etc. The Internet has made the job infinitely simpler, with the caveat that you have to be careful of your sources. Anyone can post anything on the Internet without peer review, and errors are rampant. The topics listed below are primarily ones that I have researched and generated custom pages for the content. I welcome visitor review and comments on my material to help ensure accuracy.

- NIST's Reference on Constants, Units & Uncertainty
- U.S. DoE vast resources
- ConvertIt website's scanned edition of the "Handbook of Mathematical Functions"

0..9 1dB Compression Point A A/D Converter Calculations A/D & D/A Design Data Abbreviations - NIST ABCD, S, H, Y, Z Parameters Acronyms - NIST AC Voltage & Frequency Worldwide Standards Admittance Formulas for RLC Combinations Adversary Agent Radios Amplifier Design Data Amplifiers Introduction Amplitude Modulation AM Radio Database Query AN Component Designators Antenna Basics Antenna Design Data Antenna G/T Calculations Antenna- Near vs. Far Field Antenna Radiation Patterns Antique Radio Restorations Arrhenius Lifetime Acceleration Attenuation in Construction Materials Attenuator Design Data Attenuator Equations (Fixed) ASIC Design Data Atmospheric Absorption Atmospheric Refraction  B Ball Grid Array (BGA) Counter Bandwidth Requirements for Data & Media Battery Design Data Battery - Li-Poly Battery Outlines Battery Types & Parameters Bessel Function Plots Bessel Filter Lowpass Poles Bessel Filter Lowpass Prototype Bidirectional Couplers Bit Error Rate Blind Speed Bluetooth Resources Bond Wire Fusing in ICs Bond Wire Properties Boolean Algebra Breadboarding Bulbs - Miniature Lamp Guide Bulk Resistivity Butterworth Filter Lowpass Poles Butterworth Filter Lowpass Prototype C Cable Industry Standards Capacitance Capacitance Conversions Capacitor Dielectrics & Descriptions Capacitor Dielectric Properties Capacitor Families, Mil-Spec Capacitor Values Cascade Budget Calculation CDMA/W-CDMA Cell Phone Coverage Maps Cellular Data Rate Standards Charge Conversions Chebyshev Filter Lowpass Poles Chebyshev Filter Lowpass Prototype Circuits Circular Waveguide Circulators / Isolators Coaxial Cable Chart Coaxial Cable Equations Coaxial Connectors Coaxial Connector Torque Specs Coaxial Resonators (λ/4-Wave) Coils Coil Design Data Coil Values Color Codes Communications Standards Compression Point, 1 dB Conductor Bulk Resistivity Conductivity of Metals @ DC Connector Torque Specs Constants (all values) Constants (electrical only) Copper Facts Copper Wire Spec Couplers Coupling Loss Current Current Conversions D Damped Responses Data Bus Specifications dBm-to-mW Conversions DC Blocks Declassified Documents on Radio and Radar Communications De-Embedding 12-Term SOLT Errors Delta-Wye Detectors Dielectric Constant, Loss Tangent & Strength Directional Couplers Distributed-to-Lumped Elements Dividers/Combiners Diyarbkir Radar Doppler Frequency Shift DTMF Tones Dummy Loads Duty Cycle E EIRP Electrical Equipment Electric Field Intensity Electric Fields Electrical Field Strength Conversion Table Electricity - Basic Navy Training Course, NAVPERS 10622 Electrical Safety Electrician's Mate Training Course, NAVPERS 10548 Electrocution of Human Body Electromagnetism Electronics Kits Electronic Warfare and Radar Systems Handbook Embedding 12-Term SOLT Errors EMC / EMI / RFI Resources EMF / Voltage ESD / EOS Resources

F Far Field / Near-Field Transition Far vs. Near Field FCC Part 15 Filter Design Data Filter Equivalent Noise BW Filter Transfer Functions Filter Prototype Denormalization Flip Flop Tables FM Radio Database Query Fourier Series of Periodic Signals Frequency Allocation - E.U.      - text table version Frequency Allocation - U.S.      - text table version Frequency Bands Frequency Inversion Frequency Modulation Frequency-Reactance Nomograph Frequency-to-Wavelength Friis Equation (Path Loss) Fuse Specs Fuse Package Outline  G Gaussian Filter Lowpass Poles Gaussian Filter Lowpass Prototype Generators   AC / DC GPIB / HPIB / IEEE-488 GPS Resources Greek Alphabet (Symbols,  Letters) GSM GSM (CTSBCH) Timeslot Assignment GSM (MS) Classes for Multislot Capability GSM Timeslot & Frequency Specs H HAM, Origin of Helical Resonators / Filters High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments History of Communications History of 50 Ω Hobby Electronics Kits Home Computers circa 1981 HPIB (IEEE-488/GPIB) Interface I IC Logo Identifier IEEE-488 (HPIB/GPIB) Interface IEEE802.16 WiMAX - WiMAN Resources IM3 Frequency Prediction for any Number of Tones Image Frequency Impedance Formulas for RLC Combinations Impedance Matching Inductance Induction Inductor Design Data Inductor Values Inductance Conversions Insulation & Jacketing Materials Properties Intercept Points, 2-Tone 2nd-Order Intercept Points, 2-Tone 3rd-Order IP2 IP3 Isolators / Circulators J Jamming JEDEC Specs JEITA Specs K Karnaugh Maps Kirchhoff's Law Kits, Electronics, Projects L Lead-Free Initiative    pb-free.com, pb-free.info    EU RoHS Limits Link Budget Lightning Lightning Protection Li-Poly Batteries Logo Identifier Loss Tangent Low Power FM (LPFM) Radio Lumped-to-Distributed Elements M Magnetic Field Conversions Magnetic Flux Conversions Magnetics Design Data Magnetism Magnetrons Maximum Permissible RF Exposure Limits (FCC) Maxwell's Equations Microstrip Microwave Principles MIL Standards & Specs MIL-STD-1553 & 1773 Bus Miniature Lamp Guide Mixer Design Data Mixer Spurious Products Modulation Modulation Principles Morse Code Motors AC / Motors, DC mW-to-dBm Conversions N Nanotechnology Resources Near Field Communications (NFC) Resources Near-Field / Far-Field Transition Near vs. Far Field NEETS   Module 1 - Introduction to Matter,     Energy, and Direct Current   Module 3 - Introduction to Circuit     Protection, Control, and     Measurement   Module 4 - Introduction to     Electrical Conductors, Wiring     Techniques, and Schematic     Reading   Module 5 - Introduction to     Generators and Motors   Module 6 - Introduction to     Electronic Emission, Tubes,     and Power Supplies   Module 7 - Introduction to Solid-     State Devices and Power     Supplies   Module 8 - Introduction to     Introduction to Amplifiers   Module 10 - Introduction to Wave     Propagation, Transmission Lines,     and Antennas   Module 11 - Microwave Principles   Module 12 - Modulation Principles   Module 18 - Radar Principles   Module 21 - Test Methods and     Practices Neutral Conductor Hazards Noise Figure Noise Power Noise Voltage Norton Equivalent Numerical Prefixes O Ohm's Law Opamp Opamp Noise Figure Oscillator Design Data

P P1dB Package Marking Search Engine Package Outlines Parallel Circuits Parallel Port Pinout Parallel-Series Circuits Path Loss PCB Design Data PCB Trace Fusing Current PCB Via Fusing Current PIM - Passive Intermodulation Path Loss, 1- & 2-Way (Friis) Photovoltaic Cell EM Regions Polarization, Antenna Potential Power, Electric Power Density Power Dividers / Combiners Power Factor Power Supply Design Data Power & Voltage in 50 Ω System Propagation Time Pulse Definition Q Quadrature Couplers Quadrature Modulation R Radar Blind Speed Radar Cross Section (RCS) Radar Equation Radar Horizon/Line of Sight Radar Principles Radar Pulse Repetition Frequency Radar - What Is It? Radiation Hazards Radio Restoration Projects Radio Frequencies Reactance-Frequency Nomograph Reflection Coefficient / VSWR / Return Loss Resistance Conversions Resistor Markings: MIL-PRF-55342 Resistor Markings: Std Resistor Values Resonators (λ/4-Wave Coaxial) Return Loss / VSWR / Gamma RF Exposure Limits (FCC) RFID Resources RFID DeFacto Standards Right-Hand Rule RLC Combinations: Parallel RLC Combinations: Series RMS & Average Voltages                - Sinewave                - Triangle Wave RMS & Average Power & Voltage "Roger Wilco" Origin RoHS Lead-Free Initiative    pb-free.com, pb-free.info,    EU RoHS Limits RoHS Resources RS-422 Interface RS-485 Interface S SAR (Specific Absorption Rate) Satellite Communications Satellite Frequencies Semiconductor Properties, RF Semiconductor Resources Serial Port Pinout Series Circuits Series-Parallel Circuits S, H, Y, Z, ABCD Parameters Signal-to-Noise Ratio Sinewave Voltages Skin Depth Slide Rules Slot Antennas Smith Chart Solar Cell EM Regions Solar Spectral Irradiance Solder Solvents for Electronics (properties) Spectral Inversion Spurious-Free Dynamic Range Spurious Calculations Square Wave Voltages - Vpk, Vpk-pk, Vavg, Vrms Standards Documents - Military & Commercial Static Electricity Switch Design Data Substrate Design Data T Television/CATV Frequencies TEMPEST Terminations Thermal Noise Power Thermal Noise Voltage Thévénin Equivalent Tin Whiskers - NASA Toroid Cores Torque Specs for Coax Connectors Transformers Transformer Design Data Transformer Lead Color Codes Transient (Damped) Responses Transistor Museum Transmission Line Equations    Offsite references: 2, 3 Triboelectric Series Tubes, Vacuum U Ultra Wideband (UWB) Undersampling Units (electrical) USB Specifications V Vacuum Tubes VoIP Basics Voltage / EMF Voltage: RMS & Average Power VSWR Mismatch Error   Phase Angle Error Derivation VSWR Reduction By Attenuation VSWR / Return Loss / Gamma W WAP (Wireless Application Protocol) Watkins-Johnson (WJ) Tech-Notes Waveguide Waveguide Charts Waveguide Design Data Waveguide Formulas:      Rectangular & Circular Waveguide TE & TM Modes      Rectangular & Circular Wavelength-to-Frequency WCDMA Band Frequency Assignments W-CDMA/CDMA WEEE Resources Wi-Fi Hot Spot Finder Wire Wireless Communication Specs #1, #2 Wireless Coverage Maps Wireless Data Rate Standards Wireless Frequency Bands - Global Wireless LAN (WLAN) WLAN Specs WLAN Spectral Masks (802.11a/b/g) Y Yo-Yo Story: An Electronics Analysis Case History Z ZigBee Resources