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Dick Lyon, in the Long Room of the Trinity College, Dublin, library, admiring Brian Boru's harp, 2017

Hi, I'm Dick Lyon. I am a research scientist/engineer in Silicon Valley, California. I've been contributing to Wikipedia since May, 2005.

Some of my work outside Wikipedia is linked on my techie home page More recent research pubs are found here. And don't forget my always-popular Otis King pages.

And now I'm an author; so buy my book (or see my book blog to access a free online copy) if you're interested in Human and Machine Hearing.

Contributions to the Wikipedia[edit]

My contributions are mostly related to photography, photometry, color, electronics, and signal processing. And in recent years, style gnoming.


Here I collect most of the pictures I've uploaded, mostly my own, but including some public domain images and photos licensed by a few friends.


I uploaded over 100 photos in 2017, and well over 100 so far in 2018.

From my recent (2018) trips:


Photography and optics[edit]

Photometry and colorimetry[edit]

Electronics and signal processing[edit]

Panorama of the Very Large Array, New Mexico, December 2017

Math, science, engineering[edit]


Panorama of the Hetch Hetchy aqueduct, December 2016
Panorama of Fort Bliss National Cemetery, October 2017
Panorama of Apple Campus 2 under construction, July 2016


Aerial view of the Yampa River in northern Colorado, November 2017


Panorama of Stein am Rhein in late afternoon sunlight, stitched for me by Laurence