PhotoMath, a free app, lets you take a picture of an equation and get an answer plus the steps involved. (Does not recognize handwriting.) Assuming you already have it on a screen somewhere, this is easier than re-typing the mathematical expression at sites like WolframAlpha.com. PhotoMath already has 11 million downloads for the iPhone and Windows Phone version. That’s a lot of downloads but it didn’t work for us. You try it. An Android version is coming soon.
IFLscience.com has fascinating bits, including “21 GIFs that explain mathematical concepts.” For instance, did you know that the number Pi (3.14159 etc.), is equal to the distance traveled by rolling a wheel exactly one revolution? That distance turns (ha, ha) out to be 3.14 times the diameter. This is true no matter what size the wheel.
We didn’t think the $115 price tag was worth it, but the new “4-bit Steel” watch from Cadence is already sold out. It uses a four-bit binary number system to mark the hours. You don’t need to know the binary system to read it, however, because the marks are all in the same position they would be on an ordinary analog watch. Still, the whole point is to raise your geek score.We tried a cheaper version, which sells for $90 from CadenceWatch.com and is not sold out yet. The only drawback was no glow in the dark minute and hour hands; only the second hand glows not too useful. Programmers should really zero in on this, because the binary system is […]
“Salary Comparison” lets you compare salaries in various U.S. cities. For example a $37,000 salary in Cleveland, Ohio is equivalent to a $60,000 salary in San Francisco, because the cost of living there is so much higher. Go to tinyurl.com/sconverter. The converter is by WolframAlpha, the mathematical software company.