Monthly Archives: December 2013

Benjamin Franklin's Long Term Financial Planning

Posted on 27-December-2013 by mathscinotes

Quote of the Day The secret of joy in work is contained in one word -- excellence. To know how to do something well is to enjoy it. - Pearl Buck Today, my youngest son and I were talking about … Continue reading →

Posted in Financial | 2 Comments

Boyle's Law in the Movie "Men of Honor"

Posted on 26-December-2013 by mathscinotes

Quote of the Day I understand that sometimes you have to win ugly, but I see no advantage in losing ugly. — Pat Buchanan, political commentator. I do not watch many movies and the ones I do see tend to … Continue reading →

Posted in General Science | 6 Comments

The Biggest Ball Lens I have Ever Seen

Posted on 24-December-2013 by mathscinotes

Quote of the Day The most important thing in the world today is that England and the United States speak the same language. — Otto Von Bismarck We use tiny ball lenses all the time to mate our fibers up … Continue reading →

Posted in Fiber Optics, General Science, optics | Comments Off on The Biggest Ball Lens I have Ever Seen

Mathcad Example Using Decibels

Posted on 23-December-2013 by mathscinotes

Quote of the Day I learned filmmaking by studying the Old Masters - and by that I mean John Ford, John Ford and John Ford. — Orson Welles Introduction I have been working on a software requirements document that involves … Continue reading →

Posted in General Mathematics, optics | 7 Comments

Australian Phone Line Impedance Math

Posted on 22-December-2013 by mathscinotes

Quote of the Day The time to reef the sails is before the storm is upon you. — Old sailing aphorism Introduction I am doing some work with international phone circuits and I noticed that the Australian government has test … Continue reading →

Posted in Electronics | 3 Comments

The Old Two Coat Trick

Posted on 19-December-2013 by mathscinotes

Quote of the Day Everything we call real is made up of things that cannot be real. — Niels Bohr I had a déjà vu moment this morning. One of my staff members was looking for another staff member and … Continue reading →

Posted in Management | 4 Comments

Two-Resistor Thermistor Linearizer

Posted on 18-December-2013 by mathscinotes

Quote of the Day Ability is of little account without opportunity — Napoleon Bonaparte Introduction I was asked a question today about how to design a two-resistor thermistor linearization circuit. This very brief post is intended to provide the background … Continue reading →

Posted in Electronics | 3 Comments

Ballistic Coefficient Rule of Thumb Example

Posted on 13-December-2013 by mathscinotes

Quote of the Day Wisdom and experience are built from bricks made from the mud of failure. — Mike Blue I am working on a ballistic simulator and I was looking for some test data. While hunting up some data, … Continue reading →

Posted in Ballistics | 4 Comments

World War 2 Submarine Hull Thickness Math

Posted on 12-December-2013 by mathscinotes

Quote of the Day How are the children? — Masai warrior greeting, intended to ensure that the warriors always keep their number one priority in mind. I was reading a blog post on Gizmodo that did a bit of math … Continue reading →

Posted in Military History, Naval History | 2 Comments

An Example of Misusing Thermal Resistances

Posted on 11-December-2013 by mathscinotes

Quote of the Day Being defeated is often a temporary condition. Giving up is what makes it permanent. — Marilyn vos Savant In my previous post, I provided some definitions of thermal resistances and thermal characteristics. In this post, I … Continue reading →

Posted in Electronics | Comments Off on An Example of Misusing Thermal Resistances