27 March 2011

The writer is shown with a display of early lamps and sockets from his collection in a February 1962 photograph. He is placing a Packard Mogul lamp on the display table. In the center of the vertical board is a Nernst Glower, which once hung in front of a store in Laconia, NH. Two GE Meridian lamps (spherical bulbs) can be seen on the table to the right of the Edison replica. Three bundles of bamboo filaments are around the Edison replica.
(Photo by GE Lighting Business Group, Nela Park, E. Cleveland, OH)
In order to obtain a closer view of the lamps and sockets Go to: Enlarged view of lamps and sockets

This website consists of eight separate sections, two of which deal with the development of the incandescent lamp, and to a limited extent, other later lamp types. A great emphasis is also placed on biographical sketches of persons who contributed greatly to lamp development within the General Electric Company as well as other companies worldwide. The sixth section does not deal with lamp development or those who worked in the lamp industry. The seventh section gives some biographical information of the writer as well as some comments regarding the influence others had on his work output. The last section deals with the subject of fun things one can make or subjects of interest that one can read about.The sections are:

1) Early Incandescent Lamps
2) Contributors to Light Source Development in the 20th Century
3) Women Scientists at GE
4) NELA Technology Heritage Display
5) Biographical Sketches of Persons Mentioned in the Above Four Sections
6) Agnes Pockels - Making History at the Kitchen Sink
7) In the Shadows of Greater Minds
8) Fun Things for the Young-In-Spirit


Early Incandescent Lamps
This first section deals mainly with topics that pertain to the electric incandescent lamps that were manufactured between the years 1880 and 1925. However, a few topics that cover the time back to 1800 are also included.

Lamp inventors, from left to right:
John McCullough, patented on Apr 3, 1906
Albert W. W. Miller, patented on Aug 22, 1905
William J. Phelps, patented on Mar 6, 1906
Charles Heisler, patented on Nov 17, 1885

Go to: Early Incandescent Lamps


Contributors to Light Source Development in the 20th Century
This second section is comprised of biographical sketches of workers and some of their contributions during the 1900s. While the technical output of an individual can often be determined by means of the technical literature or patents, the personal information can often be difficult to obtain after the passing of the person. This effort is therefore an attempt to determine some personal information that is often overlooked in mentioning lamp developments.

Lamp Identification, from left to right:
MR-16 Precise, Compact Multivapor (metal halide)
High Output Lucalox (high pressure sodium), 50-watt Fluorescent Biax


Go to: Contributors to Light Source Development in the 20th Century


Women Scientists at GE
This section presents biographical sketches of women who played significant roles in scientific research and engineering involving various lamps. Synergy of efforts is necessary if success is to be achieved. These women, selected from a large number of qualified candidates, achieved their personal goals as well as those of the company they worked for.

Go to: Women Scientists at GE


NELA Technology Heritage Display
For many decades the main location for research and development for General Electric Lighting was located at NELA Park in East Cleveland, Ohio. In the late 1980s a display area was built in one of the buildings for the purpose of informing viewers of developments that had been made, and were being made, at that location. One small window of that area was dedicated to heritage material. This section of the website shows two of the displays that were assembled in that space.

Go to: NELA Technology Heritage Display


Biographical Sketches of Persons Mentioned in the Above Four Sections
This section allows one to go to a biographical sketch that exists in the sections above by clicking on the name. In addition, additional sketches are included that appear in the unpublished book titled 100 Notable Names in the History of the Incandescent Lamp.

Go to: Biographical Sketches of Persons Mentioned in the Above Four Sections


Agnes Pockels - Making History at the Kitchen Sink
This sixth section presents a brief account of the origin of the general field of surface chemistry. While the effect of certain oils on the surface of water has been noted for centuries, the beginning of a scientific investigation of the subject took place in Germany by a young lady who started her studies at age 18.
Go to: Agnes Pockels - Making History at the Kitchen Sink


In the Shadows of Greater Minds
This section presents a brief outline of the work experience of the writer. In addition, and of greater importance, is mention of the influence of others on the writer's work output.
Go to: In the Shadows of Greater Minds


Fun Things For The Young-in-Spirit
This section presents some simple items one can make that are only for amusement whereas others have a scientific bent to them. Some items are for reading about occurences in nature that one can experience.
Go to: Fun Things for the Young-in-Spirit





Edward J. Covington
17279 Hooper Ridge Road
Millfield, Ohio 45761-9645
U. S. A.
740-448-1004
ejcov@frognet.net