Billie the Blue LED Limited Edition Enamel Pin
"If there was a choice on spending a lot of money on accessories or dress, I always chose accessories." – Iris Apfel
And how gorgeous are these enamel pins! They look amazing on your jacket, backpack or wherever! These are handsomely designed and constructed with a cast metal body with butterfly cast.
Billie the Blue LED doesn't just sing the blues, she lives the blues. Billie has a good heart, and sings the blues just like Billie Holiday. That means she sometimes sees glass as half-empty (even when it's full), and shies away from trying new things. Billie has a big-sister relationship with Ruby and admires her enthusiasm. Billie sings and speaks in a rough and breathy alto. Her catchphrase is "it's enough to make a girl feel kinda blue…", typically before breaking into song.
LEDs are two-terminal electronic devices and are a special type of diode. The first modern LEDs were created by engineer Nick Holonyak in 1962 at General Electric. When electrons cross part of the diffusion region of a diode (an area called the band gap), a photon is emitted. The size of the band gap determines the wavelength (color) of the photon. LEDs are available in many wavelengths ranging from infrared to ultraviolet.