The museum also called "Madaatech".
I photographed many pictures and especially videos in it, of things that related to lighting, electricity and traffic signaling.
There was also a shop of science stuff. I asked the seller, if they have a spectroscope, but the seller said that they have only spectroscopic lenses, which produces spectrum with a similar mothed as my CD-R (They are only more efficient than the CD-R with specturms of far light sources and at night.
Because half of the photographing was videos that i initially need to upload to youtube, i have no option but to upload all my pictures at once to reduce my stress, and i have 17 pictures. So I will initially upload 10 pictures and than 7 pictures.