mathematics
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Math Forum: Ask Dr. Math FAQ: Loans and Interest
A person makes a deposit with a financial institution, which promises a certain rate of interest per year, paid after specified intervals of time. Note: The interest rate may be expressed as a percentage per year (yearly rate), or as an annual percentage rate (APR). These sound similar, but they are different, and it's important to know which one you're dealing with. With simple interest, the amount of the deposit remains the same, and the amount of interest is paid to the depositor at the end of each interval of time.
The Ultimate Online Reference for Engineers
Renewable Energy Coverage of solar energy, solar architecture and sustainable buildings, wind energy (offshore and on shore), wave and tidal energy, biomass energy, renewable hydrogen and fuel cells.
Good Math, Bad Math
Finally, at long last, I can tell you what I've been up to with finding a new home for this blog. I've created a new, community-based science blogging site, called Scientopia. With the help of many wonderful people, we're ready.
Pi Day
Pi, Greek letter ( ), is the symbol for the ratio of the circumference of a circle to its diameter.