negative


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Related to negative: Negative Exponents, Negative ions

negative:

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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Negative

 

in black-and-white photography and cinematography, an image formed by grains of metallic silver in which the photographic blackening is inverse to the brightness of details of the object being photographed. The brighter the detail, the greater its blackening in the reproduced image. In color photography, the image of the object being photographed is formed by the pigments whose colors are complementary to the colors of the parts of the object (yellow is complementary to blue, purple to green, light blue to red, and so on).

A negative is an intermediate image of the object in a two-stage process; it is used to obtain a positive. In some cases a negative can be the final image—for example, in recording spectra for spectral analysis. The quality of a negative is judged by its optical density, its degree of contrast, and its graininess. For color negatives the color balance (matching of colored images) is also important. A negative is considered normal if the positives printed from it have a realistic appearance and show easily discernible details.


Negative

 

in grammar, a word or affix indicating the absence of an object (u menia net knigi,“I do not have the book”), of qualitative attributes of an object (etot chelovek ne star,“this person is not old”), or of actions or states (ia ne pishu,“I am not writing”; ia ne spliu,“I am not sleeping”). A word-sentence expressing disagreement with an utterance (net! “no!”) is also a negative.

Languages express negatives in various ways. Separate words are used in the case of the Russian net and ne, the German nein and nicht, the English “no” and “not,” and the French non and ne ‖ pas. Word-forming affixes may also be used, as the nein the Russian nebol’shoi (“not large,” “small”), the bez- in the Russian bezdetnyi (“childless”), the un- in the German unbekannt (“unknown”), the “un-” in the English “unpleasant,” or the “in-” in the English “invisible.” Negatives may also be expressed by morphological forms in inflection. Negative affixes are used in the Turkic languages, as in the Tatar ëshlim (“I am working”), contrasted to ëshlämim (“I am not working”). Negative verbs are used in certain Finno-Ugric languages, as exemplified by the Zyrian me og mung (“I am not going”). English uses a negative analytical verb form in a sentence such as “I do not see.”

negative

[′neg·əd·iv]
(electricity)
Having a negative charge.
(graphic arts)
The image on film in which the dark tones of the original appear transparent, and the light tones appear black and opaque. Also known as reversed image.

negative

As used in air traffic control terminology, it means, “No,” or “Permission not granted,” or “That is not correct.”

negative

1. Biology indicating movement or growth away from a particular stimulus
2. Med (of the results of a diagnostic test) indicating absence of the disease or condition for which the test was made
3. another word for minus
4. Physics
a. (of an electric charge) having the same polarity as the charge of an electron
b. (of a body, system, ion, etc.) having a negative electric charge; having an excess of electrons
c. (of a point in an electric circuit) having a lower electrical potential than some other point with an assigned zero potential
5. short for electronegative
6. of or relating to a photographic negative
7. Logic (of a categorial proposition) denying the satisfaction by the subject of the predicate, as in some men are irrational; no pigs have wings
8. Astrology of, relating to, or governed by the signs of the zodiac of the earth and water classifications, which are thought to be associated with a receptive passive nature
9. short for Rh negative
10. Photog a piece of photographic film or a plate, previously exposed and developed, showing an image that, in black-and-white photography, has a reversal of tones. In colour photography the image is in complementary colours to the subject so that blue sky appears yellow, green grass appears purple, etc.
11. Physics a negative object, such as a terminal or a plate in a voltaic cell
12. a quantity less than zero or a quantity to be subtracted
13. Logic a negative proposition
References in periodicals archive ?
Antipsychotics can both worsen and alleviate negative symptoms by reducing psychotic symptoms.
Since 2014, this has led a number of central banks, to start exploring negative policy rates.
Key words: Positive and negative emotionality, psychological distress (depression, anxiety and stress), university students.
Unfortunately, homes and workplaces in urban areas are usually sealed off from the natural negative ions.
The findings indicated that regular sleep disruptions are associated with difficulty in shifting one's attention away from negative information, which indicates that sleep is a part of what makes negative intrusive thoughts stick around and interfere with people's lives.
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. The Euroimmune EIA showed overall accuracy of 88.8 %, with a sensitivity of 100% (95%CI = 73.2%-100%) and specificity of 81.8 % (95%CI = 58.9%-94%); of these results, 22.2% were false positives and none were false negative.
In fact, the Fed found that among households with the greatest negative net worth, the majority of debt comes in the form of student loans.
Moreover, the food index rose from 1.2 points to 2.4 points, and the textile index increased from negative 2.2 points to 0.9 points, while improvements in the remaining sectors were considerably lower.
In February 2016, the monthly net flow of credit to individuals and private non-profit institutions was negative at EU226 million, compared with a negative net flow of EU287 million in the previous month, and its annual growth rate stood at -2.9%, from -3.0% in the previous month.
Negative interest rates may be coming to the US this year.
They found that regardless of family income and structure, youths with a recent negative life event were 1.4 times more likely to engage in sexual intercourse.
This was a decline over loss after financial items of SEK1,204m, or negative EPS of SEK3.29, in 2013.