How Does Photographic Paper Work? ~ Enhance Photography Skill

The light sensitivity of photographic paper--that is, its ability to pick up an image from an image projected onto it from a negative and retain it--seems baffling unless you understand what is happening to the paper on a chemical level. The presence of certain chemicals on photographic paper affect how an image appears, how fast it takes the image to appear on the paper, and even whether the paper will accept a color or black and white image.

It is the layer of chemicals coating photographic paper that provides light sensitive properties. Silver halides--or the compound that is created when silver is combined with one of two types of silver fluorides, chloride, silver bromide or iodide--are suspended in gelatin. Depending on the particular mixture used to create the silver halide for a paper emulsion, according to R. E. Jacobsen (et al), author of "The Manual of Photography, the "speed, rates of development and fixation, image colour and tone reproduction qualities" are affected.

The presence of trace elements, like sulfur for instance, within the gelatin used in the emulsion can affect the light sensitivity, and often increases it. Silver halide crystals present within the emulsion have light-sensitive properties; when they are exposed to light, the surface changes, or develops, and is ready for processing. The crystal actually becomes what is referred to as "developable," or ready for fixing (the actual development process) in a chemical bath that stops the development of the crystals. Were they to develop fully, the image surface would turn completely black.
Portions of the chemical coating (emulsion) receiving the most light develop silver halide crystals more densely. Much like film has a speed (ISO 400, for example), photographic paper does also. The paper speed refers to the rate at which the silver halide crystals develop--how light sensitive they are.

Whether a paper is intended for monochrome (black and white) images or for color, largely depends on the levels of halide present in the paper's emulsion. The more bromide is present in the paper, the greater the sensitivity of the crystals to longer wavelengths, or those that can pick up color. There are photographic papers made especially for picking up the right black and white tones from color negatives. Photographic paper made for developing prints from black and white images will not process the tones from a color negative correctly, or directly translate the tonality into a grayscale image. Rather, the image will appear murky and out of focus.

Enhance your photography skill,The Top Secret Photography Techniques

HowStuffWorks "How Cell Phones Work"
electronics.howstuffworks.com/cell-phone.htm
Learn about cell phones, check out our cell phones buying guide, read cell phone reviews and compare prices and features on cell phone accessories.
What is tagging and how does it work? Facebook Help Center ...
https://www.facebook.com/help/?faq=124970597582337
A tag is a special kind of link. When you tag someone, you create a link to their timeline. The post you tag the person in may also be added to that persons timeline.
How to Make a Paper Crane - Origami - YouTube
www.youtube.com/watch?v=FSijU52XJ7w
Explains how to turn a piece of printer paper into an origami crane. It involves some new and advanced folds which I go through step by step on how to ...
Wetting agents: What are they, and how do they work? - Keith J.
www.kkarnok.com/courses/idl/KarnokXiaTucker2004-WettingAgents.pdf PDF file
A better understanding of how wetting agents work will lead to their more effective use on the golf course. RESEARCH cal combinations are possible.
University, placement, school and entrance exam question paper
www.howtoexam.com
What would you call someone who, at the age of eleven dreamt of going to the most loneliest spot on earth (South Pole) at the age of twenty, thought within 2 weeks he ...
A Magazine Is an iPad That Does Not Work.m4v - YouTube
www.youtube.com/watch?v=aXV-yaFmQNk
Technology codes our minds, changes our OS. Apple products have done this extensively. The video shows how magazines are now useless and impossible to ...
About Scrapbooking
scrapbooking.about.com
Everything you need to know to get started scrapbooking and also to inspire seasoned scrapbookers to keep scrapbooking and add new scrapbook techniques to their ...
HowStuffWorks "Business & Money"
money.howstuffworks.com
The Business and Money Channel contains articles that answer all of your financial questions. Check out the HowStuffWorks Business and Money Channel.
How To Become A Model - Modeling Portfolios - Fashion, Glamour
www.purestorm.com
Purestorm aims to help you become a successful model, for all types of modeling including glamour, fashion, photographic, teen and many others. Sign up for a free ...
How does Shazam work to recognize a song ? So, you code ?
www.soyoucode.com/2011/how-does-shazam-recognize-song
So, you want to know how Shazam works? What is Shazam, you may ask ? Let's say you're in a bar, and they play a song that you like and you don't know its name ?
How to Create Your Own DIY Silent Retreat - 2. What to do
www.think-happier.com/how-to-create-your-own-diy-silent-retreat-2...
You can create your own silent retreat and enjoy the benefits of an expensive retreat. Find out what activities you can schedule for your home-made retreat.
Turnstep.com
turnstep.com
Turnstep is a large community of aerobics enthusiasts featuring over 15,000 patterns, an active bulletin board, and more.
Wonder How To Show & Tell for Creators & Doers
www.wonderhowto.com/following
Wonder How To is your guide to free how to videos on the Web. Search, Browse and Discover the best how to videos across the web using the largest how to video index ...
HowToTo.com - Learn How to Do Stuff
howtoto.com
Tutorials, step-by-step guides, and other instructions on how to do things. Learn lessons and receive guidance from experts.
Photo Radar Scam - Info on How to Beat Your Photo Radar or
photoradarscam.com/getout.php
Defense Strategies, Information to beat Red Light Camera and Photo Radar Cameras Tickets and Citations in Court
Money eHow UK - eHow How to Videos, Articles & More -
www.ehow.co.uk/money
Money: Find great tips on The worst jobs in the UK, Bizarre business names or what not to call yours and The 8 worst UK cities and towns to live in. Learn about ...
Just how much do people hate Windows 8? ZDNet
www.zdnet.com/just-how-much-do-people-hate-windows-8-7000013319
Mar 31, 2013 Just how much do people hate Windows 8? Summary: Some of you dont like Windows 8. And thanks to Internet comments and social media, you have lots of ...
Teeth Whitening Reviews
www.topteethwhiteningreview.com
There are not that many people that will tell you that they do not wish that they had a bright and beautiful smile. As a matter of fact, there are a high number of ...
How do you solve a problem like North Korea? Three viewpoints ...
worldnews.nbcnews.com/_news/2013/04/02/17571557-how-do-you-solve-a...
North Korean leader Kim Jong Un's brinkmanship is in full bloom. He's ordered the missiles prepped, dismissed the armistice and announced plans to bring a nuclear ...
How does the iPhone 4S camera stack-up against other cameras?
campl.us/posts/iPhone-Camera-Comparison
A photo comparison from all iPhone version cameras taken with Camera+ (First generation iPhone, iPhone 3G, iPhone 3GS, iPhone 4, the new iPhone 4S), a point &
Find new friends Kiwibox Community Kiwibox Community
www.kiwibox.com
A teen community, built for teens by teens, wrapped around an online magazine where teens can get fashion tips, advice, and chat. Features current news, horoscopes ...
VeganYumYum Yup, I'm back.
veganyumyum.com
Buy Viagra Online from an Official Certified Pharmacy. Express shipping & discrete packaging. 24/7 Online support. All Medications Are Certificated. OVERNIGHT Shipping.
NIH Public Access
nihms.nih.gov
Home page for the NIH Manuscript Submission (NIHMS) system. Contains links to the submission system, FAQs, and statistics.