gar
Senior Member
- Location
- Ann Arbor, Michigan
- Occupation
- EE
090929-2110 EST
On Wednesday 21 Oct 2009 an evening celebration of the 80th anniversary of the dedication of The Henry Ford Museum, Greenfield Village, and Edison Institute will occur. Now called the Henry Ford. This opening date was the 50th anniversary of Edison's first successful carbon filament lamp experiment. This lamp lasted about 40 hours when Edison stop the experiment about 1 or 2 PM on Tuesday 21 October 1879. Edison was confident that this length of run time meant that the major problems had been solved and he wanted to get a close look at the filament. Many bulbs had failed in a short time before this one.
The problems of the dynamo and distribution system had been solved earlier in the year.
On 21 October 1929 Tom Edison and Francis Jehl re-enacted the building of this first bulb with Henry Ford and President Herbert Hoover looking on in the restored Menlo Park Laboratory in Greenfield Village, Dearborn, Michigan.
There are Ford Motor Co. movies of the 1929 events and these are now at the National Archives. My belief is that the original film was 35 MM and is fairly grainy on the video copy. Another film segment on the same video tape, but from 1937 is less grainy. However, not quite as good as a copy I made from a 16 MM film that was made from the original 1937 film.
A photograph of a replica of the Edison carbon filament lamp made for the 100th anniversary at Greenfield Village by General Electric is P13 (1372A) at my website
http://beta-a2.com/EE-photos.html
.
On Wednesday 21 Oct 2009 an evening celebration of the 80th anniversary of the dedication of The Henry Ford Museum, Greenfield Village, and Edison Institute will occur. Now called the Henry Ford. This opening date was the 50th anniversary of Edison's first successful carbon filament lamp experiment. This lamp lasted about 40 hours when Edison stop the experiment about 1 or 2 PM on Tuesday 21 October 1879. Edison was confident that this length of run time meant that the major problems had been solved and he wanted to get a close look at the filament. Many bulbs had failed in a short time before this one.
The problems of the dynamo and distribution system had been solved earlier in the year.
On 21 October 1929 Tom Edison and Francis Jehl re-enacted the building of this first bulb with Henry Ford and President Herbert Hoover looking on in the restored Menlo Park Laboratory in Greenfield Village, Dearborn, Michigan.
There are Ford Motor Co. movies of the 1929 events and these are now at the National Archives. My belief is that the original film was 35 MM and is fairly grainy on the video copy. Another film segment on the same video tape, but from 1937 is less grainy. However, not quite as good as a copy I made from a 16 MM film that was made from the original 1937 film.
A photograph of a replica of the Edison carbon filament lamp made for the 100th anniversary at Greenfield Village by General Electric is P13 (1372A) at my website
http://beta-a2.com/EE-photos.html
.