The3rd Earl Of Derby wrote:
Patrick Hamlyn wrote:
"The3rd Earl Of Derby" wrote:

R.H. wrote:
This week's set has just been posted:

http://puzzlephotos.blogspot.com/


Rob
753. Is a photographers homemade darkroom enlarger, the lifting
cover plate is where the negative glass plate is placed.
The bulbs act as the light source.
Which part does the magnification?

Plates didn't need magnification the camera done that. ;-)

The negative plate was placed in the square housing and then the light
switched on for a few seconds and then immersed in the developer.


You are digging a deeper hole. Most cameras don't
magnify they make an image smaller than the real
object.

There is not lens in the object described,
therefore it can't be an enlarger.

Actually the paper is immersed in developer not
the light. (which is what your sentence said).
It would be easier if you just gave up! or better,
admit that you were wrong. May insight be your gift.