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Why do you hear some radio stations better at night than in the day?
electronics.howstuffworks.com/question1.htm
Have you ever noticed a difference in the quality of radio signals depending on the time of day? See how radio signals and the Earth interact.
Why doesn't paper money disintegrate when it gets washed in the washing machine?
money.howstuffworks.com/question108.htm
When I leave a normal piece of paper in my pocket and it gets washed in the washing machine, it totally disintegrates. But if I leave a dollar bill in my pocket and wash it, it comes out intact. What is the difference?
Why do some Web sites include www in the URL while others don't?
computer.howstuffworks.com/internet/basics/question180.htm
If a URL does not include "www," is it not on the "Web"? What is the difference between sites that do and don't require the "www" in the URL?
Why do those long, white clouds form behind jets flying high overhead?
science.howstuffworks.com/transport/flight/modern/question195.htm
Contrails are those long white clouds that form in the wake of an airplane flying at altitude. What causes these contrails and what are they made of? Learn the answer to this question in this article from HowStuffWorks.
Why am I not allowed to use my cell phone in airplanes or hospitals?
electronics.howstuffworks.com/question230.htm
Electromagnetic interference can create problems in some equipment in airplanes and hospitals. Learn about electromagnetic interference from cell phones.
Why is it that some Web pages seem to trap me so I can't get out?
computer.howstuffworks.com/internet/basics/question249.htm
I accidentally got into a Web site the other day that would not let me out. Even when I tried to close the window, it would pop up again -- it was unbelievable! How do they do that?
Why are there limits on CPU speed?
computer.howstuffworks.com/question307.htm
CPU speed is limited by two major factors: transmission delays and heat build-up. Learn about what limits CPU speed and how CPU overclocking works.
Why do some engines use a dry sump oil system?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/question331.htm
A dry sump is used in both race cars and some motorcycles (like Harley-Davidsons). What is the advantage of a dry sump?
Why do CDs reflect rainbow colors?
electronics.howstuffworks.com/question52.htm
Like soap bubbles and grease slicks, CDs reflect rainbow colors. What makes this happen?
Consolidated B-24 Liberator
science.howstuffworks.com/consolidated-b-24-liberator.htm
The Consolidated B-24 Liberator was the most prolific American plane of World War II. But the B-24 was not as attractive as the B-17 bomber, nor did it win the same popular regard from the public. Read the story and specifications of the B-24 bomber.