Red, Yellow, Green, Blue Light Emitting Diodes (LEDs)

• Blue: \(470\:\rm{nm}\)
• Green: \(525\:\rm{nm}\)
• Yellow: \(585\:\rm{nm}\)
• Red: \(660\:\rm{nm}\)

1K ohm adjustable resistor (potentiometer)

220 ohm carbon resistor

Two D cell Batteries and Holders

Digital Multi Meter (DMM) and Two Alligator Clip/Banana Jack Leads

Six short Alligator Clip Leads

Background Data Collection and Analysis