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Science News
September 28, 2002
Ivars Peterson |
Stepping Beyond Fibonacci Numbers Trying variants of a simple mathematical rule that yields interesting results can lead to additional discoveries and curiosities.   |
Science News
May 1, 2004
Ivars Peterson |
Counting on Fibonacci Fibonacci numbers have all sorts of amazing properties and links to many different kinds of mathematics |
Science News
November 15, 2003
Ivars Peterson |
Cool Rationals One of my more distinct recollections of math class involves the decimal representation of rational numbers and the discovery of wonderful patterns among those digits. A new paper finds fascinating new patterns and provides some numerological explanations. |
Science News
March 12, 2005
Ivars Peterson |
Fibonacci's Other Numbers Generalized Fibonacci arrays have attractive properties and could provide a wealth of further activities for exploration... Puzzle of the Week... |
Science News
November 3, 2001
Ivars Peterson |
Absolutely Abnormal Identifying the normal (or even the abnormal) in mathematics can pose serious difficulties... |
Science News
February 3, 2001
Ivars Peterson |
Fibonacci's Chinese Calendar The curious coincidence of the Fibonacci cycle and the Chinese calendar cycle allowed Seok Sagong of Middletown, Conn., to establish a one-to-one correspondence between the sequence of final digits of Fibonacci numbers and the names of years in the Chinese calendar... |
Science News
June 3, 2006
Ivars Peterson |
Fibonacci's Missing Flowers The number of petals that a flower has isn't always a Fibonacci number. You have to be careful when you're building mathematical models of natural phenomena. |
Science News
February 14, 2004
Ivars Peterson |
Hunting e E has been called the logarithmic constant, Napier's number, Euler's constant, and the natural logarithmic base. This article describes how it can be calculated. |
Science News
September 24, 2005 |
Math Music An interactive Web site, developed at Eastern Washington University, provides variety of tools for composing music based on mathematical recipes that convert sequences of numbers -- such as pi, or Fibonacci numbers -- into sounds. |
Science News
July 29, 2006
Ivars Peterson |
Names for Numbers Recreational mathematics offers a vast playing field for amateur and professional mathematicians alike. Named numbers, such as Smiths, have all sorts of intriguing properties. |
Science News
October 19, 2002
Ivars Peterson |
A Fibonacci Fountain Lake Fibonacci is a recently created reservoir at the Maryland Science and Technology Center, bordered by Curie Drive and Science Drive. The lake's remarkable centerpiece is a massive, yet elegant mathematical fountain that spurts water as high as 36 feet into the air. |
Science News
April 6, 2002
Ivars Peterson |
The EKG Sequence Sequences of numbers have long fascinated both amateur and professional mathematicians. Here's a recently discovered example that has prompted some serious mathematical investigation... |
PC Magazine
October 19, 2004
Neil J. Rubenking |
Excel Converts Fractions to Dates How to enter numeric fractions such as 3/16 or 5/9 in Excel, without having them converted to dates such as March 16 and May 9. |
Science News
May 17, 2003
Ivars Peterson |
Sequence Puzzles Neil A.J. Sloane of AT&T Shannon Labs in Florham Park, N.J., has been collecting number sequences ever since he was a graduate student at Cornell University in the 1960s. |
Popular Mechanics
July 2007
Roy Berendsohn |
Top 3 Measurement Tools for DIY Done Right The stuff here isn't as fun as, say, using a high-powered saw, but it can save lots of time. |
Science News
December 14, 2002
Ivars Peterson |
A Trillion Pieces of Pi Computer scientist Yasumasa Kanada and his coworkers at the University of Tokyo Information Technology Center have now succeeded in computing 1,241,100,000,000 decimal digits of pi, smashing their own previous world record of 206,158,430,000 digits, set in 1999. |
PC Magazine
February 1, 2006 |
Halves, Quarters, Eighths, Sixteenths in Excel Translating units without error in Excel. |
PC Magazine
January 18, 2005
Neil J. Rubenking |
Easier Excel Fractions Regarding the PC Magazine tip about fractions in Microsoft Excel, there's another way to enter fractions directly that will both preserve the actual value of the number and autoformat the cell with a fraction format. |
