# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/franz-carl-muller-lyer
# Generated: 2026-08-15T04:43:07.152Z

schema: https://schema.org/Person
url: "https://fame.am/person/franz-carl-muller-lyer"
name: "Franz Carl Müller-Lyer"
slug: "franz-carl-muller-lyer"
description: "Franz Carl Müller-Lyer, born Franz Xaver Hermann Müller, was a German psychologist and sociologist. The Müller-Lyer illusion is named after him."
tagline: "German psychologist & sociologist (1857-1916)"
image: "https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/M%C3%BCller-Lyer_illusion.svg/330px-M%C3%BCller-Lyer_illusion.svg.png"
gender: "male"
category:
  name: "Doctors"
  slug: "doctors"
profileType:
  name: "Doctor"
  slug: "doctor"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1857-02-05"
deathDate: "1916-10-29"
livingStatus: "DECEASED"
scores:
  popularity:           41.88
  momentum:             0
  historical:           8.745465333333334
  currentAttention:     0
  sourceConfidence:     54.99999999999999
  profileCompleteness:  60
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://th.wikipedia.org/wiki/%E0%B8%9F%E0%B8%A3%E0%B8%B1%E0%B8%99%E0%B8%97%E0%B8%8B%E0%B9%8C_%E0%B8%84%E0%B8%B2%E0%B8%A3%E0%B9%8C%E0%B8%A5_%E0%B8%A1%E0%B8%B6%E0%B8%A5%E0%B9%80%E0%B8%A5%E0%B8%AD%E0%B8%A3%E0%B9%8C-%E0%B8%A5%E0%B8%B7%E0%B8%AD%E0%B9%80%E0%B8%AD%E0%B8%AD%E0%B8%A3%E0%B9%8C"
    title: "ฟรันทซ์ คาร์ล มึลเลอร์-ลือเออร์"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%81%D8%B1%D8%A7%D9%86%D8%B2_%D9%85%D9%88%D9%84%D8%B1_(%D8%AF%D9%83%D8%AA%D9%88%D8%B1_%D9%85%D9%86_%D8%A7%D9%84%D9%85%D8%A7%D9%86%D9%8A%D8%A7)"
    title: "فرانز مولر (دكتور من المانيا)"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Franz_M%C3%BCller-Lyer"
    title: "Franz Müller-Lyer"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Franz_Carl_M%C3%BCller-Lyer"
    title: "Franz Carl Müller-Lyer"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%81%D8%B1%D8%A7%D9%86%D8%AA%D8%B3_%DA%A9%D8%A7%D8%B1%D9%84_%D9%85%D9%88%D9%84%D8%B1_%D9%84%D8%A7%DB%8C%D8%B1"
    title: "فرانتس کارل مولر لایر"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Franz_M%C3%BCller-Lyer"
    title: "Franz Müller-Lyer"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%95%E3%83%A9%E3%83%B3%E3%83%84%E3%83%BB%E3%82%AB%E3%83%BC%E3%83%AB%E3%83%BB%E3%83%9F%E3%83%A5%E3%83%A9%E3%83%BC%E3%83%BB%E3%83%AA%E3%83%A4%E3%83%BC"
    title: "フランツ・カール・ミュラー・リヤー"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%ED%94%84%EB%9E%80%EC%B8%A0_%EC%B9%BC_%EB%AE%90%EB%9F%AC-%EB%9D%BC%EC%9D%B4%EC%96%B4"
    title: "프란츠 칼 뮐러-라이어"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Franz_M%C3%BCller-Lyer"
    title: "Franz Müller-Lyer"
    type:  "WIKIPEDIA"
  - url: "https://sq.wikipedia.org/wiki/Franz_Carl_M%C3%BCller-Lyer"
    title: "Franz Carl Müller-Lyer"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q6546821"
    title: "Wikidata"
    type:  "WIKIDATA"

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