About 25-30 watts are being put into the apparatus. The 120-LED array shown above has an intense cyan color with a broad angle of light. Since the index of refraction of plastic is similar to that of water, the LED plastic casing doesn’t act as a lens anymore. If an LED is introduced in water, light disperses in every direction.
Demos: Red Light Emitting Diode (LED) The LED lens gathers the light and focuses it into a beam. Most common diode is the LED (Light Emitting Diode). 5) Diodes: Diodes are one of the fundamental building blocks of electrical circuits. 3) Get intuitive sense of voltage divider. (Make 3 volts out of 5 volts with voltage divider.) Know when it is a good idea and when it is not. Bales Lecture 1: Course Introduction Topics: 1) Resistors, and the voltage divider.