The document covers different aspects of light bulbs including why they are a good starting point for engineering education due to their simplicity yet complexity, what types were covered which were LEDs and incandescents, who uses light bulbs which is essentially everyone, when the first incandescent light bulb was invented by Thomas Edison in 1879, where the longest-lasting light bulb has been continuously on since 1901 in a fire station in California, and how different types of light bulbs like incandescents, LEDs, CFLs, and halogens work.

1. Lets go over what we
Covered

2. Why Light Bulbs?
Besides the fact that lightbulbs are the prettiest things ever (don’t stare at bright
lights too long), Lights are the perfect starting point to enter the field of
engineering. Their simple enough for a beginner to understand but complex
enough to give a real taste of what the engineering field is like.

3. What Light Bulbs?
Although I mentioned CFL (compact fluorescent) and halogen lightbulbs, we only
covered LED and incandescent Lightbulbs. If your interested in the engineering
field after learning about LEDs, their the purrfect next step in your search.

4. Who lightbulbs?
Everybody uses light bulbs, if you’re reading at night, you probably have a light
bulb on in your room right now. Have no lights in your room or house, go outside
and you’ll see dozens of street lights. Live in the mountains? Your phone or tablet
is using a bunch of tiny lights right now, they could be said to be a type of
lightbulb. I know you have a phone or some tablet, cause… come on.

5. When Light Bulbs?
The first incandescent light bulb was invented by Thomas Edison in 1879 and
patented January the next year. The invention of the light bulb advanced the
gaslight era of the past into the modern lights era of the present.

6. Where Light Bulb?
In 1901, in the Livermore-Pleasanton Fire Department maintains it at 4550 East
Avenue in Livermore, California, a small weak lightbulb was hung and turned on to
assist the firefighters navigate in the dark. This light is still on 121 years later and
holds the record for longest lasting light bulb in the world.

7. How Light Bulb?
Light bulbs work in a variety of ways. Incandescents work by heating up a small
wire enough for it to emit light the same way a fire would. LEDs work via
electroluminescence, the phenomenon where energy is emitted by light. CFL light
bulbs work through a chemical reaction of argon mercury and a fluorescent
coating. Halogens are incandescent light bulbs which use a gas to more efficiently
create a light out of heat.