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1. a colloid system in which the dispersion medium is a gas and the dispersed particles are liquid.
2. an artifact seen on a radiograph caused by unintentional exposure to reducing contrast.


(fog) a colloid system in which the dispersion medium is a gas and the disperse particles are liquid.


Droplets dispersed in the atmosphere or a respiratory device.


Abbreviation for freezing of gait.

light fog

(līt fawg)
Black areas seen on a radiograph when a film is exposed to white light before processing.
Synonym(s): fog.

fog (fogging),

fog, chemical,
n See film fault.
fog, dyschroic,
fog, light,
n See film fault.
fog, radiation,
n the film darkening caused by radiation from sources other than intentional exposure to the primary beam; e.g., film may be exposed to scatter radiation, or accidental exposure may occur if stored film is not protected from radiation.


1. a colloid system in which the dispersion medium is a gas and the dispersed particles are liquid.
2. regrowth after harvesting of a cereal crop. Called also aftermath, feg.
3. obscuring opacity on an x-ray film.

basic fog
blackening of an unexposed x-ray film after development.
x-ray fog
local or general exposure to extraneous radiation, light or chemical action which is additional to the true photographic image. Leads to spoiling of the x-ray image.

Patient discussion about fog

Q. In what way the brain fog symptom associated with fibromyalgia? In what way the brain fog symptom associated with fibromyalgia? What are the other symptoms of fibromyalgia?

A. memory loss is also associated with Fibromyalgia...lack of concentration and you just feel like you are in a fog...can't remember....can't think. Our standing joke at my house is "I am in the "fog" today. The one thing my doctor ALWAYS reminds me of fibro affects people differently, remember you may not have all the sympoms or you may have ones others don't but fibromyalgia is widespread pain that has lasted 3 months or more, it is pain of the fibrous tissue - ligiments, tendons and muscles. You feel stiff and achy all over. There are trigger points such as neck, shoulders, spine and hips. Chronic fatigue taht is possibly related to the disturbed sleep patterns. Most suffers I have talked to have restless leg syndrome and headaches. Irritable bowl is associated but on that one I am lucky I haven't had the problem but have had swolling problems and vision problems...I hope this helps. Good Luck!

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References in periodicals archive ?
Brigadier Khalifa Mohammed Al Khaili, director of traffic and patrols directorate at the Abu Dhabi Police, said: "Police had banned lorries and buses transporting workers from using roads during foggy conditions and instead wait until the weather condition returns to normal to ensure safety on the roads and to prevent accidents.
The weather will be dry after the brief rainfall in most parts of the country, and the Met Office has predicted dense foggy conditions from Bahawalpur to Sukkur next week.
Foggy, a keen skier, also told how he wanted to take part in Channel 4's The Jump - but wife Michaela threatened to end their 25-year marriage if he did.
Foggy, ex-Army officer Blunt and England rugby ace Laurence Dallaglio, 43, opened La Vache in Verbier, Switzerland in 2013.
Motorists are advised to follow traffic instructions during foggy conditions," he said.
DADDY DDY DD 'S HOME Foggy with Danielle, Michaela and Claudia
Footballer Jimmy Bullard was the first to get the boot and James is now hoping Foggy can go all the way.
The office predicted more snowfall in upper parts of the province while foggy condition to prevail in Peshawar and surrounding areas during next 24 hours.
But her spectacular victory roll caused a wave that almost capsized the rescuers who had cut Foggy free after she got tangled in lobster pot ropes.
8220;Through starting our own business, we were overwhelmed with online resources, books, articles, whitepapers, courses and other tools available to help the entrepreneur, but few straightforward things to follow,” said Robson Wolanski, founder of Foggy Labs.
27, 2010 (TAP) - At least 21 people, including 14 children, have died in a pair of traffic accidents in China, one a pileup of more than 100 cars in foggy weather.
Summary: Accident happened after bus plunged about 1,100 feet off foggy, rainy mountain in western provice of Manabi.