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Welcome

Welcome to the Walter R Evans website.  Into Stability (Second Edition)  is now available from this website as a paperback or hardback in either of two trim sizes.  It is available as a Kindle EBook on Amazon or as an audiobook (first editiion) on Google Play.   My email is gregorywalterevans@gmail.com.- Greg Evans

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available for purchase: print, ebook, audio

QR-CODES UPDATED ON 9-25-2026 AT NOON PDT

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ONE LIFE THAT OFFERS MANY LESSONS

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A worksheet for THE "SLIGHTLY CUBIC" PROBLEM

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suggestions for using the worksheet

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THE CHARACTERISTIC EQUATION

DOWNLOAD ONE PAGE EXLPLANATION

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THE "SLIGHTLY CUBIC" CHARACTERISTIC EQUATION

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Historical ROOT LOCUS Series:

Each  of these PDF files draws upon the same body of research that went into the book, Into Stability.  Eacg articlec focuses on one aspect of the  development of Evans' Root-Locus Method

Evans_1_Introduction to Historical Root-Locus Method Series (pdf)

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Evans_2_The Origins of the Root Locus Method (pdf)

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Evans_3_The Aerophysics Lab at North American Aviation (pdf)

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Evans_4_The Struggle to Publish the Root-Locus Method (pdf)

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Evans_5_The Spirule (pdf)

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Evans_6_Control-System Dynamics (pdf)

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Evans_7_Into Stability (thru Chapter 1) (pdf)

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1987 ASME Oldenburger Medal (pdf)

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Bringing Root Locus to Classroom. 1948-1954 (pdf)

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FOR A LIMITED TIME: through october: $50 VALUE - FREE TO E

Instructors: 

what you may receive by mail

PAPERBACK copy of 2ND EDITION OF THE BOOK, aN original spirule, and a "slightly cubic"  exercise: solve the first root-locus problem.


who is eligibile:

 UP TO 50  instuctors of FALL 2026 college-level 

courses for which  the root-locus method IS listed in the catalog sylLabus.  

21 PACKAGES HAVE already BEEN sent.


INTERESTED? EMAIL: 

GREGORYWALTEREVANS@GMAIL.COM 

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APP. 10 IN 2ND EDITION: MEETING WALT EVANS FOR FIRST TIME.

Our Mission

At Into Stability: Walter R Evans and the Story of Root Locus, we are on a mission to help people discover the joy of reading. We believe that reading is not only a source of entertainment but also a way to learn, grow, and connect with others.