In alkali lakes, (a type of salt lake), evaporation concentrates the naturally occurring alkali salts. When the lake evaporates completely, this forms a crust of mildly basic salt across a large area often called an alkali flat.
Alkaline Paper: Permanent papers (PH of 7.5 - 8.2).
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Alkaline Battery
These batteries from the home of loud, colorful and obnoxious product design, Japan, was designed by Stockholm Design with a decidely Swiss look - and almost by necessity featuring Helvetica.
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alkali blue
refer to reflex blue.
alkaline dip
term used for that step in stripping or removing of an alkali soluble resist when an etched circuit board is dipped and soaked in a high strength (6-10%) solution of a sodium hydroxide, ...
-Alkalinity - denotes the degree of alkali in a solution, measured in pH values. All values above pH 7 are alkaline.
Alkali.
Shortens developing time for practical purposes. Development will still take place in the absence of an alkali but it will take considerably longer.
Pros: Alkalines are cheaply and readily available anywhere. They store a fair bit of power and let you go a reasonably long time between replacements.
2 x AA Alkaline or NiMH Batteries (Alkalines supplied)
Weight (inc. batteries)
150 g (5.3 oz) ...
PRESERVATIVE All developing agents in an alkaline state are affected by oxygen. When the developing agent combines with the oxygen in the air, the efficiency of the developing agent is reduced.
Acid fixer: A chemical used to neutralize alkali. It is used in the final stage of processing to stop the action of alkaline bath.
Additive color process: A method of producing color images by mixing the three primary colors, red, blue, and green.
Disposable or alkaline batteries should be removed from your camera when not used for a prolonged period since they can leak highly corrosive chemicals.
They'll last a lot longer than alkaline. Your flash will recycle much faster too with lithium batteries.
If it's below freezing, resist the temptation to blow dust off your lens. Your breath will freeze on the glass definitely not fun.
The rating of the acid or alkalinity of a solution in a scale from 0 to 14. It's based on the hydrogen ion concentration in a solution. Chemical solutions with higher PH ratings are increasingly alkaline, while lower ones acid.
However, Kodak brown toner, which is simply an alkaline solution of potassium sulfide, gives somewhat yellower tones than the selenium toner and does not require as much bromide in the second developer to obtain comparable colors in the toned image.
(In pinch you can use alkaline batteries should you find your rechargeables dead). By far the most popular AA rechargeable batteries are Nickel Metal Hydride (NiMH).
Though not so lasting as alkaline, but have a better resistance to cold than alkaline. When the batteries power is drained out, it will turn "flat" right away (advisable to have spare batteries).
nickel cadmium (NiCad): Rechargeable batteries that use an alkaline electrolyte. They have a longer life than non-rechargeable batteries. NiCad batteries have a memory, so they need to be run all the way down before recharging.
This can be tough on alkaline batteries and can also slow you down photographically, as you wait for the batteries to recharge.
pH scale
A numerical system running from 0 14 and used to express the alkalinity or acidity of a chemical solution. 7 is neutral. Solutions with a lower pH value are increasingly acidic, and those with a higher pH value are increasingly alkaline ...
Caustic potash
High alkaline used in high contrast developing solutions to encourage dynamic development. Highly corrosive and poisonous.
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For protecting photographs from age & wear, you can spray them with Archival Mist (by EK Success), which deposits a safe, non-toxic alkaline buffer into the structure of photo paper that continues to work over time.
LIGHTFASTNESS - The rate at which dyes, pigments and paints change colour or get lighter as a result of being exposed to UV or daylight, heat, acids or alkalis.
The G10 is nice, but, I'd rather take the SX10 (successor to the S3 & S5): - 20x zoom ratio (28-560mm eq) vs 5x (28-140mm eq) - AA batteries vs special Li-ion batteries (use rechargeable NiMH batteries, but can also buy alkaline AAs about ...
As mentioned above, stop bath, a weak acid, chemically neutralizes developer, which is alkaline, or a base.
What Stop Bath(s) Is (Are) ...
Most of these new cameras have lithium or alkaline batteries. The lithium batteries can take one to two hours to bring up to a full charge.
CR-V3 - This is a 3V lithium battery used in many Olympus brand (and other) digital cameras. It lasts much longer than alkaline but it is also more costly. See CR-V3 batteries here.
However, the 150 hours is a conservative figure and can be increased approximately fourfold (to 600 hours) by using two lithium AAs instead of alkaline batteries.
An old Nikon SB105 with alkaline batteries will crap out long before that 8GB card is filled, but an Ikelite DS125 equipped with the new NiMH battery pack will power through and keep recycling quickly.
For older HP models that require traditional AA batteries, Lithium-Ion and Nickel-Metal Hydride (NiMH) batteries are recommended. Alkaline batteries will die very fast and cost the most to replace over time.
The purchase of batteries can be a significant running cost for some cameras, especially those that use non-standard lithium cells. Some cameras can use rechargeable NiCad cells in addition to normal zinc-carbon or manganese alkaline cells.
 See also: Photograph, Camera, Image, Light, Exposure
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