HomeSearchRegisterLog inAnnouncement
Current Time

Announcement
Latest topics
» : “MAYOR JENNY A. BARZAGA 2nd Table Tennis Cup 2011"
Photographic film I_icon_minitimeby cleamaes Tue Jan 31, 2012 4:20 pm

» 4Videosoft DVD to ipad suite helps you to rip DVD rapidly
Photographic film I_icon_minitimeby skygirl Sat Nov 26, 2011 11:42 pm

» Real estate market paralyzed as giants fall into insolvency
Photographic film I_icon_minitimeby mrthought Sat Oct 29, 2011 12:54 pm

» Vietnam office rents to fall 7% in 2012, Jones Lang Lasalle says
Photographic film I_icon_minitimeby mrthought Sat Oct 29, 2011 12:53 pm

» Vietnam Struggles to Attract Foreign Property Investment
Photographic film I_icon_minitimeby mrthought Sat Oct 29, 2011 12:52 pm

Poll
What brand of blade do you use ?
Butterfly
Photographic film I_vote_lcap41%Photographic film I_vote_rcap
 41% [ 18 ]
Stiga
Photographic film I_vote_lcap18%Photographic film I_vote_rcap
 18% [ 8 ]
DHS
Photographic film I_vote_lcap5%Photographic film I_vote_rcap
 5% [ 2 ]
Donic
Photographic film I_vote_lcap14%Photographic film I_vote_rcap
 14% [ 6 ]
Yasaka
Photographic film I_vote_lcap7%Photographic film I_vote_rcap
 7% [ 3 ]
729 Friendship
Photographic film I_vote_lcap7%Photographic film I_vote_rcap
 7% [ 3 ]
JOOLA
Photographic film I_vote_lcap2%Photographic film I_vote_rcap
 2% [ 1 ]
Killerspin
Photographic film I_vote_lcap2%Photographic film I_vote_rcap
 2% [ 1 ]
Andro
Photographic film I_vote_lcap2%Photographic film I_vote_rcap
 2% [ 1 ]
Xiom
Photographic film I_vote_lcap2%Photographic film I_vote_rcap
 2% [ 1 ]
Total Votes : 44
Affiliates
free forum
 

 

 Photographic film

Go down 
AuthorMessage
kosovohp



Male
Number of posts : 339
Location : VN
Member of : VN
Registration date : 2010-10-01

Photographic film Empty
PostSubject: Photographic film   Photographic film I_icon_minitimeWed Jan 12, 2011 8:06 am

Photographic film is a sheet of plastic (polyester, nitrocellulose or cellulose acetate) coated with an emulsion containing light-sensitive silver halide salts (bonded by gelatin) with variable crystal sizes that determine the sensitivity, contrast and resolution of the film. When the emulsion is sufficiently exposed to light (or other forms of electromagnetic radiation such as X-rays), it forms a latent (invisible) image. Chemical processes can then be applied to the film to create a visible image, in a process called film developing.
In black-and-white photographic film there is usually one layer of silver salts. When the exposed grains are developed, the silver salts are converted to metallic silver, which block light and appear as the black part of the film negative.
Color film uses at least three layers. Dyes, which adsorb to the surface of the silver salts, make the crystals sensitive to different colors. Typically the blue-sensitive layer is on top, followed by the green and red layers. During development, the exposed silver salts

Cheap Flights
master page
Back to top Go down
 
Photographic film
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Vernlen Table Tennis & Chess Club :: All About Chess ::   :: General-
Jump to: