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© Mark Biegert and Math Encounters, 2013. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Mark Biegert and Math Encounters with appropriate and specific direction to the original content.
Monthly Archives: February 2011
Projectile Time of Flight/Distance Versus Velocity
Introduction As I mentioned before, I am reading the book “Modern Practical Ballistics” by Pejsa and am finding some interesting material there. I previously duplicated Peja’s derivation for a function describing a G7 standard projectile’s velocity versus range. This post … Continue reading
Posted in Ballistics
3 Comments
Drive-By Math
Introduction Occasionally I have an engineer come by my cube and unexpectedly present me with an opportunity to do math. A few years ago one of the engineers stopped by with a VERY common type of electrical engineering problem. He … Continue reading
Posted in Electronics
2 Comments
Calculating the Density of a Planet
Introduction I have been reading some interviews with Michel Brown, an astronomer that has a book out called “How I Killed Pluto and Why It Had it Coming.” His interviews are interesting and I encourage people to read or view … Continue reading
Posted in Astronomy
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Neat Use of Gravity Measurements
One of my sons is into archeology. Whenever he talks about it, I always find the discussion interesting. We were talking about the pyramids one day and the subject of the various ramp theories came up. He pointed me to … Continue reading
An Analog Circuit Design Review
Introduction When an electrical engineer asks me what my specialty is, I always respond that I am an analog designer. I love designing analog electronics. Even though I am now in management and am not allowed to design analog electronics … Continue reading
Posted in Electronics
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Railroad Math
Introduction I was listening to an advertisement where CSX made the claim that they move 1 ton of freight 423 miles for 1 gallon of fuel. This is an interesting measure of efficiency. Let’s see if we can confirm this … Continue reading
Posted in General Science
5 Comments
Drinking Math
Introduction As a non-drinker, I have never had much interest in alcohol. That said, alcohol has been a big part of my life. My mother earned her living working in bars, starting as a waitress and eventually managing them. Even … Continue reading
Posted in Health
7 Comments
Interesting Old Submarine Photo
A co-worker and I were discussing strange photos we have seen. I mentioned a photo that I saw years ago that showed USS S-5′s tail sticking out of the water. During the 1920s, submarines that submerged occasionally did not come … Continue reading
“Dying Gasp” from a Circuit Standpoint
Introduction The Metro Ethernet Forum (MEF) specifies requirements for carrier-grade Ethernet services. One the features they define is the “dying gasp”. A dying gasp is defined as follows: Dying Gasp is a message (or signal) sent by the Customer Premises … Continue reading
