**All references here are to PDF files available on LastTechAge**

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**Physics**

**Fusion Energy Topics**

APS request for help to defend budget support 2012 Dec 10 – Emergency request to contact Congress in support of research funds.

American Fusion Act of 1980 Text of this often-quoted act to release funding for the major advances in engineering that were in the air.

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**Mathematics**

**Mathematics – Brief Notes****Complex numbers **

*This Brief Notes section is a work-in-progress. When *all* the files have been listed, this text will disappear*.

**Brief-Complex 01 Why Imaginary**

Although *i* may look like nonsense, imaginaries are very actual

Brief-Complex 02 Basic operations, variables on a complex plane

Complex addition, subtraction, multiplication and division. Values on a complex plane.

Brief-Complex with a Calculator

How to find complex operations on the TI-84. Displays what operations ought to be on a device that is complex ready. + Overview of complex values

**Mathematics – Exponential Growth and Other Topics**

Is Math Hard? Math is not hard for someone who is prepared. But start with addition, multiplication, division and exponentiation and build from there.

Math Perturbation Techniques and Epicycles People laugh at epicycles but they were an early attempt to do perturbation theory modeling without the necessary math techniques.

The Chess Board Fable Join us to save Kingdoms, rescue Princesses, invent warp drive.

Chess Board Fable – presentation form Full screen slides for presentations

Rabbit Tales Hop over to a true story of heaven, horror and survival.

Visualize Exponential Growth In Data Sets Find exponential growth in data using log-linear graphs.

Start of Probability Theory – deMeer, Pascal, Fermat Here is how all studies of probability and chance started.

Solutions to Bayesian examples Mathematical solutions to the examples of Bayes’ Theorem given in our post Time Path – Probability began it.

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**Economics**

2012 0706 NYT Paul Krugman Off and Out With Mitt Romney Paul Krugman essay on Romney’s qualifications

More Capitalism, Please David Brooks 2012 Jul 17 essay on how great offshoring and outsourcing really are.

Brooks The Inequality Problem NYT 2014-0117 David Brooks 2014 Jan 17 essay on how the Left confuses everyone with Inequality arguments

Trends correlating with Saez-Piketty Inequality Compilation of all the trends currently found to correlate with the data from Emmanuel Saez and Thomas Piketty.

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**Natural Resources**

Patterns In World Oil Production Analysis of production trends for major world producers. PDF form of our post (see Index for link).

EIA US Petroleum Exports Exceed Imports for first time 1949-2011 These data disappeared from EIA web page at least once in 2012.

Estimating Reservoir Depletion Algebraic for resource usage that grows exponentially until 1/2 of reservoir has been drained.

Modeling Depletion of a Reserve Graphic models for startup, peak, and final production.

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**Visual Phenomena**

Visual Color, Blackbody Emission, Color Temperature Visual perception, color temperature, lots of diagrams. What’s a Blackbody?

How Fluorescents Work How they work, why they fail

Charles J. Armentrout – Ann Arbor*Update* 2022 May 02**Find related posts: ** *Click the *INDEX *tab under the Banner picture, or* [Categories]*, right.*