The Greek Symbol “Lambda”

Lambda was selected as a symbol by the Gay Activists Alliance of New York in the 1950s and was declared the international symbol for gay and lesbian rights by the International Gay Rights Congress in 1974. It’s unclear how exactly lambda was adopted by the LGBT community or what it actually means but some popular theories include: the charged energy of the gay and lesbian rights movement (since lambda symbolizes “energy” in chemistry and physics), the Roman interpretation meaning “the light of knowledge shining into the darkness of ignorance,” or “the notion of being on different wavelengths when it comes to sex and sexuality.” There’s also this idea kicking around that lambda appeared on the shields of Spartan and/or Theban warriors in ancient Greece. The Thebes version is more popular because, as legend has it, the city-state organized the Theban Army from groups of idealized lovers, which made them exceptionally fierce and dedicated soldiers–though eventually the army was completely decimated by King Philip II, the father of Alexander the Great. Lending credence to this theory is the fact that the 1962 version of “300” depicted soldiers with lambdas on their shields. I never saw the 2006 version so someone else will have to confirm or deny the perpetuity of lambda in that whole situation.

SOURCE: http://www.autostraddle.com/i-saw-the-sign-lgbt-symbols-then-and-now-140061/