Lessons 3: Compact Fluorescent Lamp (CFL) Light bulbs
Compact fluorescent light bulbs use a fluorescent powder coating (on the inside of the glass) that transfers ultraviolet light into visible light. Compact fluorescent lamps have a glass tube that is twisted into a spiral so that they take up approximately the same amount of space of an incandescent bulb. A drawback of fluorescent lights is that they take a few seconds to warm up before they can emit 100% of the light that they are capable of.
Doing the science
- Start the Bright Ideas Simulation by clicking on the "Sim" tab.
- Click on the CFL light bulb. It will move to the base. Record the number of watts that the display reads on the base in Table 1 below.
- Click on the timer in the lower right hand part of the screen. When the bulb burns out, the data will be filled in below. Repeat step 2 over and over again until your time is out. A table will appear with all of the data for the CFL row completed.
- Record your findings in Table 1 below.