# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/friedrich-von-hefner-alteneck
# Generated: 2026-08-15T20:19:21.585Z

schema: https://schema.org/Person
url: "https://fame.am/person/friedrich-von-hefner-alteneck"
name: "Friedrich von Hefner-Alteneck"
slug: "friedrich-von-hefner-alteneck"
description: "Friedrich Heinrich Philipp Franz von Hefner-Alteneck was a German electrical engineer and one of the closest aides of Werner von Siemens. He is largely remembered for the invention of the Hefner lamp, which provided the measure of luminous intensity used in Germany, Austria and Scandinavia from 1890 to 1942. The measure was called the Hefnerkerze (HK). The Hefnerkerze was superseded in the 1940s by the modern SI unit, the candela."
tagline: "German engineer (1845–1904)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/1904_Hefner-Alteneck.jpg?width=1200"
gender: "male"
country:
  name: "Germany"
  isoCode: "DE"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1845-04-27"
deathDate: "1904-01-07"
livingStatus: "DECEASED"
scores:
  popularity:           43.38
  momentum:             7.142857142857143
  historical:           10.07311066666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AE%BF%E0%AE%B0%E0%AF%86%E0%AE%9F%E0%AF%86%E0%AE%B0%E0%AE%BF%E0%AE%95%E0%AF%8D_%E0%AE%B5%E0%AF%8B%E0%AE%A9%E0%AF%8D_%E0%AE%8E%E0%AE%83%E0%AE%AA%E0%AF%8D%E0%AE%A9%E0%AF%86%E0%AE%B0%E0%AF%8D_-_%E0%AE%86%E0%AE%B2%E0%AF%8D%E0%AE%9F%E0%AF%86%E0%AE%A9%E0%AE%95%E0%AF%8D"
    title: "பிரெடெரிக் வோன் எஃப்னெர் - ஆல்டெனக்"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%81%D8%B1%D9%8A%D8%AF%D8%B1%D9%8A%D8%B4_%D9%81%D9%88%D9%86_%D9%87%D9%8A%D9%81%D9%86%D8%B1_%D8%A7%D9%84%D8%AA%D9%86%D9%8A%D9%83"
    title: "فريدريش فون هيفنر التنيك"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%A5%D0%B5%D1%84%D0%BD%D0%B5%D1%80-%D0%90%D0%BB%D1%8C%D1%82%D0%B5%D0%BD%D0%B5%D0%BA%2C_%D0%A4%D1%80%D0%B8%D0%B4%D1%80%D0%B8%D1%85_%D1%84%D0%BE%D0%BD"
    title: "Хефнер-Альтенек, Фридрих фон"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Friedrich_von_Hefner-Alteneck"
    title: "Friedrich von Hefner-Alteneck"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q68095"
    title: "Wikidata"
    type:  "WIKIDATA"

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