Archive for the ‘Uncategorized’ Category

Math in Architechture

December 26, 2016

The U. S. Air Force Academy Chapel in Colorado Springs  is an example of a very mathematical theme in architecture.  Symmetry, geometry along with the theme of jet aircraft.



Single Point Perspective Photo– Congressional Office Building

August 4, 2016

Congressional Office Building

This picture was taken in a hall of the Cannon House Office Building where Representatives in Congress have their offices.  The building was completed in 1908.

It is a good example of single point perspective, also known as one point perspective.  For more on this subject, which overlaps math and art, go to:

One Point Perspective Drawing: The Ultimate Guide

Periodic Table of Elements

June 8, 2016

Click here: Periodic Table of Elements


A New Biggest Prime Found

January 24, 2016

A new biggest prime number has been found.  It is called a Mersenne Prime because it can be written as 2^(74,207,281)-1.  It is so large that it defies comprehension.

As written in the New York Times

“How big is this big prime number?

I timed how quickly I could write down a number: about four seconds for 10 digits. If I had enough paper and ink — and made the impossible assumption that my hand could maintain this pace — it would take me more than three months to write down the 22,338,618 digits of 274,207,281− 1.”

Retrieving a voicemail message from another phone

January 12, 2016
This works for Verizon wireless phones, and maybe others too.

An associate recently had a problem with her smart phone that stopped working as a phone, but continued working in all other ways.  A search on the web for how to retrieve her voice messages from her phone from another line proved fruitless.  So here it is.

The way to do that is to dial your own number from any phone and hit # during the outgoing message.  You will then be prompted to put in the pin, and then you are in.  You will have complete access.

And that is why it is very important to have a strong pin, at least not an obvious one.

I would appreciate feedback from readers regarding systems other than Verizon, and systems outside of the U.S.  Updates to foll

Math In Art, Parallel in 3 Dimensions

October 27, 2015

This photo shows parallel pipes, not in a plane.

parallel in 3D picture

Inelastic Collision

December 20, 2013

Caught on video: A 90 car pile up on a snowy road.  It is an excellent example of why it pays to slow down in poor conditions and to leave more room between cars.  It is easy to drive 70 mph on an icy road; the only problem is stopping!

Native American Ten Commandments

November 27, 2013

The Native American Ten Commandments

1.  Treat the Earth and all the dwells therein with respect.

2. Remain close to the Great Spirit.

3. Show great respect to your fellow beings.

4.  Work together for the benefit of all mankind.

5.  Give assistance and kindness wherever needed.

6.  Do what you know to be right.

7.  Look after the well-being of mind and body.

8. Dedicate a share of your efforts to the greater good.

9.  Be truthful and honest at all times.

10.  Take full responsibility for your actions.

Mind Mapping with Technology

August 26, 2013

“The Top 9 Mindmapping and Brainstorming apps for the iPad” from Educational Technology and Mobile Learning


Mind mapping on the PC ( recommended by PC Magazine):


Five best Mind Mapping apps (recommended by


Mind Mapping on the MAC (recommended by


Growly Notes

MindNode Lite

MindNode Pro



Examples of Mind Maps/Templates


Teaching and Learning with Mind Maps


Book on Mindmapping (without technology) It is a classic.

Mindmapping — Your Personal Guide to Exploring Creativity and Problem-Solving by Joyce Wycoff

ISBN: 0-425-12780-X

Data Crunchers Now the Cool Kids on Campus

March 2, 2013

The Wall Street Journal’s Numbers Guy, Carl Bialik wrote a timely article about how more and more students are taking, and even majoring in Statistics in college.  There is also a near threefold increase in the number of students taking the Statistics AP exam from ’03 to’12.

Data crunchers cool on campus wsj