# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/walter-r-evans
# Generated: 2026-08-13T23:37:04.399Z

schema: https://schema.org/Person
url: "https://fame.am/person/walter-r-evans"
name: "Walter R. Evans"
slug: "walter-r-evans"
description: "Walter Richard Evans was a noted American control theorist and the inventor of the root locus method and the Spirule device in 1948. He was the recipient of the 1987 American Society of Mechanical Engineers Rufus Oldenburger Medal and the 1988 AACC's Richard E. Bellman Control Heritage Award."
tagline: "American control theorist (1920–1999)"
image: "https://upload.wikimedia.org/wikipedia/en/d/d6/Walter_R._Evans.jpg"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1920-01-15"
deathDate: "1999-07-10"
livingStatus: "DECEASED"
scores:
  popularity:           40.78
  momentum:             0
  historical:           9.407596
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://pt.wikipedia.org/wiki/Walter_Richard_Evans"
    title: "Walter Richard Evans"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AA%D8%B1_%D8%B1._%D8%A5%D9%8A%D9%81%D8%A7%D9%86%D8%B2"
    title: "والتر ر. إيفانز"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AA%D8%B1_%D8%B1._%D8%A7%D9%8A%D9%81%D8%A7%D9%86%D8%B2"
    title: "والتر ر. ايفانز"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AA%D8%B1_%D8%A7%DB%8C%D9%88%D8%A7%D9%86%D8%B2"
    title: "والتر ایوانز"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Walter_Richard_Evans"
    title: "Walter Richard Evans"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Walter_R._Evans"
    title: "Walter R. Evans"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%88%D8%A7%D9%84%D8%AA%D8%B1_%D8%A7%DB%8C%D9%88%D8%A7%D9%86%D8%B2"
    title: "والتر ایوانز"
    type:  "WIKIPEDIA"
  - url: "https://hi.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BE%E0%A4%B2%E0%A5%8D%E0%A4%9F%E0%A4%B0_%E0%A4%B0%E0%A4%BF%E0%A4%9A%E0%A4%B0%E0%A5%8D%E0%A4%A1_%E0%A4%87%E0%A4%B5%E0%A4%BE%E0%A4%A8%E0%A5%8D%E0%A4%B8"
    title: "वाल्टर रिचर्ड इवान्स"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Walter_Evans"
    title: "Walter Evans"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Walter_R._Evans"
    title: "Walter R. Evans"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Walter_Evans"
    title: "Walter Evans"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q556579"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump