chemistry Tag

Remember that I promised you six destinations? Well, the first is Whatford. What is analog photography? What was it before, and what is it today? Basically, it's recording an image using chemical means, rather than electronic ones. It was tried over two centuries ago by chemists and experimenters with no means of permanently fixing their image once a lens had shown it. A novel trick, it became a reality when a French gentleman used Bitumen of Judea and oil of lavender to take a picture of some rooftops. And then further French, English, German, and American gentlemen invented faster, better ways to do this...

You need three ingredients to do correct processing of black and white film; tomatoes, onions, and capsicums. No, wait. That was the next page of the recipe book. That one is for Italian sauce. What you really need for film processing is developer, stop bath, and fixer. Mind you, if you've already started and poured the first mixture into the tank you may want to boil some spaghetti and take a break for a while. The standard developer used to be whatever was your standard. In the film era there were literally dozens of choices of chemical for the first step - Kodak, Agfa, Ilford, Adox, Gevaert, and co, and all the rest made powdered and liquid solutions for all sorts of films. You could deal with slow films, panchromatic films, orthochromatic films, fast films, films in the arctic, films in the tropics, portrait films, x-ray films, microfilms, etc. And there were books of formulae that each devotee just knew held the secret to success. Not a few darkrooms had a set of chemist's scales for weighing out the exotic components. Photographers sometimes suffered for...

It's an old photographic joke - the collapsible bottles look like concertinas. No end of darkroom workers have squeezed them while dancing around in the dark whistling Lady Of Spain.  Their wives and children wince but there is nothing that can be done about it.We discovered a mother lode of them in the back shelves of the storage area recently. Buy a set to put your darkroom chemistry in - If you've mixed up a big batch of developer and want to use it in small increments you can squeeze the bottle down to reduce the amount of trapped air and thus retard oxidation of the mix.They're only $ 7.50 so there must be a lot more things you can think to do with them. Hornpipes...