Monthly Archives: September 2013

Image of a Submarine At Periscope Depth

Posted on 28-September-2013 by mathscinotes

If you have ever wondered what a submarine looks like at periscope depth, here is a photo of the USS Key West (SSN-722). Source is the Wikipedia.

Posted in Naval History, Personal | Comments Off on Image of a Submarine At Periscope Depth

My Favorite Animation Video

Posted on 28-September-2013 by mathscinotes

I love animation and I just stumbled upon an excerpt from a television show that I saw as a boy -- "An Adventure in Art." I found this video fascinating. As an added treat, one of the artists featured is … Continue reading →

Posted in Personal | Comments Off on My Favorite Animation Video

Physical Interpretation of a Model Parameter

Posted on 26-September-2013 by mathscinotes

Introduction I frequently get very specific questions on my posts. Normally, I simply reply directly to the question. One recent question required an answer that I thought might be interesting to a broader audience. Background Here is the question that … Continue reading →

Posted in Ballistics, General Mathematics | 7 Comments

Measuring the Distance to the Moon and Photon Counting

Posted on 19-September-2013 by mathscinotes

Introduction While looking up some information on the Moon, I ran into an interesting set of web pages that describes an experiment to measure the distance to the Moon with centimeter-level accuracy. This experiment sends a stream of laser pulses … Continue reading →

Posted in Astronomy | Comments Off on Measuring the Distance to the Moon and Photon Counting

Calculating the Number of Observable Life-Supporting Planets

Posted on 11-September-2013 by mathscinotes

Introduction I like thinking about the possibility of habitable exoplanets. There are many interesting questions that people can ask about exoplanets. Here are a few questions that are interesting to think about: How many intelligent civilizations are present in our … Continue reading →

Posted in Astronomy | 4 Comments

Morning in Northern Minnesota

Posted on 10-September-2013 by mathscinotes

Fall is coming ... soon the leaves will start to change color. This is my favorite time of year here. The photographer is my neighbor, Joel Teigland.

Posted in Cabin, Personal | Comments Off on Morning in Northern Minnesota

A Management Generation Gap

Posted on 7-September-2013 by mathscinotes

A management mentor of mine (let's call him Gary) contacted me the other day. This contact brought back many memories. Most of what I know about managing people I learned from him. Gary is near retirement now and he is … Continue reading →

Posted in Management | Comments Off on A Management Generation Gap