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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Greek Alphabet / Letters / Symbols

Greek letters are commonly used as numerical prefixes and to represent physical and mathematical quantities. After only four years of engineering school, we have all written most of them hundreds of times. Most of us know the entire Greek alphabet my heart, kind of like the learning a language by immersion method - you do it without knowing. Unfortunately, as with a language, a lot of it disappears after many years of sparse usage.

Included in the table are common uses for the Greek symbols in engineering. All are used on occasion for representing angles.

If you know of others that should be added, please send me an e-mail.

Alpha	A	α
Beta	Β	β	modulation index
Gamma	Γ	γ	reflection coefficient
Delta	Δ	δ	difference
Epsilon	Ε	ε	dielectric coefficient, permittivity
Zeta	Ζ	ζ
Eta	Η	η
Theta	Θ	θ	vector angle
Iota	Ι	ι
Kappa	Κ	κ
Lambda	Λ	λ	wavelength
Mu	Μ	μ	permeability

Nu	Ν	ν	frequency
Xi	Ξ	ξ
Omicron	Ο	ο
Pi	Π	π
Rho	Ρ	ρ	resistivity
Sigma	Σ	σ
Tau	Τ	τ	time, group delay
Upsilon	Υ	υ
Phi	Φ	φ
Chi	Χ	χ
Psi	Ψ	ψ
Omega	Ω	ω	resistance, impedance

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