Smithsonian
  • Navigating
    at Sea
    • Challenges of Sea Navigation
    • Navigating Without a Clock
    • The Longitude Problem
    • The U.S. Goes to Sea
    • Navigate at Sea! Activity
  • Navigating
    in the Air
    • Challenges of Air Navigation
    • Early Air Navigators
    • Navigation at War
    • Navigate the Skies! Activity
  • Navigating
    in Space
    • Challenges of Space Navigation
    • Reaching for the Moon
    • Navigating in Deep Space
    • Navigate in Space! Activity
  • Satellite Navigation
    • Challenges of Satellite Navigation
    • Reliable Global Navigation
    • Global Positioning System (GPS)
    • Who Uses Satellite Navigation
  • Navigation
    for Everyone
    • Meet a Professional Navigator
    • Personal Navigation Stories
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research
  • Visit the Exhibition

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Time and Navigation Home
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Time and Navigation
The untold story of getting from here to there.
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  • Navigating at Sea
  • Navigating in the Air
  • Navigating in Space
  • Satellite Navigation
  • Navigation for Everyone
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research Journal
  • Visit the Exhibition
  • Challenges of Air Navigation
    • Flying Boats Cross the Seas
    • Overcoming the Challenges
      • Celestial Navigation
      • Radio Navigation
      • Dead Reckoning
    • Navigate the Skies! Activity
  • Early Air Navigators
    • Dying to Set Records
    • Charles Lindbergh's Calculated Risk
    • The Business of Air Navigation
      • The Teacher: P. V. H. Weems
      • The Air Navigation Community
      • Radio Time for Aviation
    • Lindbergh's New Tools
    • Two Men in a Hurry
      • The Winnie Mae
      • Meet the Navigator: Harold Gatty
    • Navigation Gone Wrong: Amelia Earhart
  • Navigation at War
    • The Wartime Navigator
      • Harry Crosby
      • Tools of the Trade
    • Naval Aviation
      • Meet the Navigators: WAVES
    • A New Era in Time and Navigation
      • Hyperbolic Systems
      • LORAN
      • Meet the Clockmaker: Alfred Loomis
  • Navigate the Skies! Activity

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Peter Redpath »
Harold Gatty, United States »
Texas Instruments TI 9100 LORAN-C Receiver »
Harold Gatty »
US Army Air Corps Avigation Training »
Meet The Clockmaker

Alfred Loomis

A multimillionaire Wall Street banking tycoon, Alfred Loomis lacked a formal scientific education, yet he became one of the most important American scientists of World War II.

Loomis’s fascination with timekeeping precision led to the invention of LORAN, the first successful long-range, electronic area navigation system. He played a crucial role in creating the Massachusetts Institute of Technology’s Radiation Laboratory, where radar and LORAN were developed. This unlikely scientist had a huge impact on the shift in navigation technology from mechanical timekeeping to radio frequency.

“Since the stations themselves would be about a thousand miles apart, there was a problem of synchronization. [Loomis] proposed solving [it] using his specialty—in this case highly accurate quartz clocks—at each station.” – Scientist Edward Bowen, describing Loomis’s “light bulb” moment of creating the LORAN system, October 1940

loomis_image_-_mit_museum.jpg

Alfred Lee Loomis
Alfred Loomis pioneered the key navigation technology of LORAN.
Credit: MIT Museum
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  • Navigating at Sea
    • Challenges of Sea Navigation
    • Navigating Without a Clock
    • The Longitude Problem
    • The U.S. Goes to Sea
    • Navigate at Sea! Activity
  • Navigating in the Air
    • Challenges of Air Navigation
    • Early Air Navigators
    • Navigation at War
      • The Wartime Navigator
      • Naval Aviation
      • A New Era in Time and Navigation
        • Hyperbolic Systems
        • LORAN
        • Meet the Clockmaker: Alfred Loomis
    • Navigate the Skies! Activity
  • Navigating in Space
    • Challenges of Space Navigation
    • Reaching for the Moon
    • Navigating in Deep Space
    • Navigate in Space! Activity
  • Satellite Navigation
    • Challenges of Satellite Navigation
    • Reliable Global Navigation
    • Global Positioning System (GPS)
    • Who Uses Satellite Navigation
  • Navigation for Everyone
    • Meet a Professional Navigator
    • Personal Navigation Stories
  • Timeline of Innovation
  • Artifacts
  • Learning Resources
  • Multimedia Gallery
  • Research
  • Visit the Exhibition
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  • Privacy
  • Contact
  • Sponsors
  • Press
  • Donate
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