positive


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positive:

see photographic processingphotographic processing,
set of procedures by which the latent, or invisible, image produced when a photographic film is exposed to light is made into a permanent visible image.
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Positive

 

a photographic image in which the relative distribution of brightness, in black-and-white photography, or colors, in color photography, corresponds to the distribution in the object photographed. Thus, a positive is opposed to a negative, in which there is an inverse distribution of brightness or a registration of the image in complementary colors. Two types of positives are distinguished—those produced on photographic materials with an opaque support, such as paper or ceramic material, and those produced on photographic materials with a transparent support, such as glass or film; the second type comprises diapositives and motion-picture film positives intended to be viewed against a light source or to be projected onto a screen.

Positives are obtained by contact or projection printing onto positive photographic materials—the positive process. With this process, a large number of positives can be made from a single negative; with projection printing, positives can be made any size. Positives produced as a single copy, such as amateur motion-picture films and slides, are made on reversal materials by reversal process. In color cinematography, in addition to the negative-positive and reversal processes, the imbibition process is used, which produces positives from three color-separation black-and-white negatives.

positive

[′päz·əd·iv]
(electricity)
Having fewer electrons than normal, and hence having ability to attract electrons.
(graphic arts)
Having the same rendition of light and shade as in the original scene.
(mathematics)
Having value greater than zero.
References in periodicals archive ?
Total positive HCV occurrence was 218 out of 424 fully tested NHANES participants.
Patients between the ages of 35-75 years of both gender presenting with positive ETT undergoing angiography were included in the study using consecutive sampling.
'Positive thoughts lead to positive results.' Maria Snyder
In the present study, mean and standard deviation of cholesterol (in mg/dl) of A positive blood group is 156.60 [+ or -] 21.13.
As shown in Table 2, overall accuracy of the InBios IgG kit with CDC results was 91.7%, with 92.8% sensitivity (95%CI = 64.1%-99.6%) and 90.9% specificity (95%CI = 69.3%-98.4%); of these results, 13.3 % were false positive and 4.8% were false negative.
Listeners can subscribe to "The Positive Phil Show" through iTunes and stream the show for free at www.positivephil.com.
As a geriatric psychiatrist, I also appreciated the chapter on how to apply positive psychiatry principles to geriatric patients to improve their quality of life.
We believe that Age Positive Week is a fantastic way for us all to celebrate the positive aspects of ageing and the contribution older people have made and continue to make to our communities.
We want the Welsh public to join in by badging their usual activities in the same week as Age Positive, or organising their own celebrations.
"Once the outstanding 'B' sample analysis is complete, BHA will be able to confirm the identities of all the horses whose samples returned positive results."
Fifty-six percent of Bulgarians think religion has a positive role in the society, shows a global survey of Gallup International.A Twelve percent say the contrary.A A global average of 59% of respondent have a positive opinion about the role of religion.The survey, which is done in the end of each year since 1977, asked 66 806 people in 65 countries whether they think that religion plays a positive, negative or neutral role in their country.A The results in Bulgaria are in line with the average in Eastern Europe, where 54% of the respondents think religion has a positive role in the country.
The training box has five carrier cards that yield a positive identification and 10 that produce a negative identification.