Introduction
There are many different types of flytraps available, which require different amounts of engineering and different designs.
Trap Type #1: Sticky Flytrap
Sticky flytraps are made of paper with glue on it. The engineering involved with this type of trap requires attracting the flies and making sure they stick to the paper and can't fly away. These traps are usually outside, so they also need to made of something that doesn't fall apart when it's rained on.
Trap Type #2: Electric Flytrap
Electric flytraps kill flies by zapping them with an electric charge, electrocuting the flies. The flies are attracted to the light and are killed when they come close enough to touch the trap. Engineering of electric flytraps involves: how much of an electric charge is required to kill a fly, designing it so that it's safe for humans and animals to be near without hurting them, and making sure that people understand that it shouldn't be used near water.
Trap Type #3: Jar w/ Narrow Entrance
A simple type of fly trap is a jar with a very narrow entrance. The hole is large enough for flies to enter, but small enough that they can't find their way back out easily. Engineering this type of trap involves: finding something that flies like to use as bait in the jar, finding out which material is good for the top of the jar, and figuring out how large to make the hole.
Summary/Conclusion
There are at least three separate types of fly traps, each of which catches flies, even though they do it in different ways. Different engineering principles are needed for the different traps.
Monday, March 1, 2010
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