A red filter, Zeiss barrier filter with the code ( Schott ) designation BG 23, was also used in the ocular lens assembly as it improved the contrast between specific and nonspecific fluorescence.

In contrast to normal transilluminated light microscopy, in fluorescence microscopy the sample is illuminated through the objective lens with a narrow set of wavelengths of light.

In contrast to the fluorescence effect, the Raman effect is therefore not a resonant effect.

Fluorescence-lifetime imaging yields images with the intensity of each pixel determined by, which allows one to view contrast between materials with different fluorescence decay rates ( even if those materials fluoresce at exactly the same wavelength ), and also produces images which show changes in other decay pathways, such as in FRET imaging.

Carnivory was a natural transition from insectivory for medium and large tetrapods, requiring minimal adaptation ( in contrast, a complex set of adaptations was necessary for feeding on highly fibrous plant materials ).

By contrast, for higher frequency radiations at ultraviolet frequencies and above ( i. e., X-rays and gamma rays ) the damage to chemical materials and living cells by EMR is far larger than that done by simple heating, due to the ability of single photons in such high frequency EMR to damage individual molecules chemically.

Sections of biological specimens, organic polymers and similar materials may require special ` staining ' with heavy atom labels in order to achieve the required image contrast.

* Staining – uses heavy metals such as lead, uranium or tungsten to scatter imaging electrons and thus give contrast between different structures, since many ( especially biological ) materials are nearly " transparent " to electrons ( weak phase objects ).

Samples of hydrated materials, including almost all biological specimens have to be prepared in various ways to stabilize them, reduce their thickness ( ultrathin sectioning ) and increase their electron optical contrast ( staining ).

In contrast, polycrystalline materials do not in general transmit visible light.

Iodine's relatively high atomic number, low toxicity, and ease of attachment to organic compounds have made it a part of many X-ray contrast materials in modern medicine.

Bradley's tale, for example, takes a feminist approach to Arthur and his legend, in contrast to the narratives of Arthur found in medieval materials, and American authors often rework the story of Arthur to be more consistent with values such as equality and democracy.

In contrast to many inorganic materials, organic compounds typically melt and many boil.

In contrast with this behavior, diamagnetic materials are repelled by magnetic fields.

Radiometric thermometry, in contrast, can be only very slightly dependent on the constitutive relations of materials.

In contrast, a complex set of adaptations was necessary for feeding on highly fibrous plant materials ).

However it is more common in aftermarket that visual aesthetics take on a more significant role in design than other types of sub drivers, including high contrast paint schemes, grill covers, translucent or refractive materials.

Sp²-hybridized carbon structures that – in contrast to sp³-hybridized carbon in diamond – arrange in planar sheets (" graphene " sheets ) are sometimes also included in the class of diamondoid materials for nanotechnology, e. g., graphite, carbon nanotubes consisting of sheets of carbon atoms rolled into tubes, spherical buckyballs and other graphene structures.

This is in contrast to many forms of sustainable agriculture such as permaculture or extensive agriculture, which involve a relatively low input of materials and labour, relative to the area of land farmed, and which focus on maintaining long-term ecological health of farmland, so that it can be farmed indefinitely.

In contrast, isotropic materials ( for example, aluminium or steel ), in standard wrought forms, typically have the same stiffness regardless of the directional orientation of the applied forces and / or moments.

In contrast, " bound current " arises in the context of bulk materials that can be magnetized and / or polarized.

During this period, in contrast to the near-universal marketing technique of introducing innovations on the expensive side of the marketplace and relying on consumer demand to emulate early adopters along with economy of scale to bring them into the mass market, Shimano and SunTour ( to a lesser extent ) introduced new technologies at the lowest end of the bicycle market, using lower cost and often heavier and less durable materials and techniques, only moving them further upmarket if they established themselves in the lower market segments.

Also a negative CTE is possible, which means, in contrast to most materials when heated up, such a glass-ceramic contracts.

Czechoslovak imports from the Soviet Union, by contrast, consisted primarily of raw materials and energy-related items ; petroleum and petroleum products accounted for almost 43 % of import value, and natural gas and electricity totaled 18 %.

During WWII, in contrast to the Axis Forces which suffered severe shortages of gasoline and artificial rubber, the Allied Forces were supplied with plentiful supplies of the materials.

The distinctive look of Michael Graves ' Portland Building, with its use of a variety of surface materials and colors, small windows, and inclusion of prominent decorative flourishes, was in stark contrast to the architectural style most commonly used for large office buildings at the time, and made the building an icon of postmodern architecture.

In contrast, traditional capacitors are based on dielectric materials.

By contrast, previous generations of high school and even college students were only expected to participate in, rather than design science experiments from scratch, complete with a list of materials.

When Heidegger and Sartre speak of a contrast between being and existence, they may be right, I don't know, but their language is too philosophical for me.

The cyclist, by contrast, blond and blue-eyed, is simply unreflective, unproblematic Life, `` blithe and carefree ''.

For both Plato and Aristotle artistic mimesis, in contrast to the power of dialectic, is relatively incapable of expressing the character of fundamental reality.

The short poems grouped at the end of the volume as `` Thoughts in Loneliness '' is, as Professor Book indicated, in sharp contrast with the others.

In this respect, his approach to poetry-and-jazz is in marked contrast to Kenneth Rexroth's.

A true university, like most successful marriages, is a unity of diversities Without forcing all components into a single pattern, the preparation of a master plan is an opportunity to consider interrelation of knowledge at its highest level, which a university -- in contrast to a multiversity -- should stand for.

Built upon seven hills, Istanbul, like Rome, is one of the most ancient cities in the world, filled with splendor and contrast.

It is an exotic place, so different from the ordinary that the casual tourist is likely to see at first only the contrast and the ugliness of narrow streets lined with haphazard houses.

Even when they are finished, however, the contrast will remain, for Istanbul is the only city in the world that is built upon two continents.

and that the maximum of the radio emission came about 3-1/2 days after Full Moon, which is again in contrast to the infrared emission, which reaches its maximum at Full Moon.

The interaction effect, which is significant at the level, can be seen best in the contrast of mean scores.

Where there is comparison or contrast, dominant stresses normally operate to center attention.

Their experience is quite in contrast with that of children of upper- and upper-middle-class native-born parents, who are more likely to regard education as good for its own sake and to discount the vocational emphases in the curriculum.

Perhaps one way to sharpen our sense of the modernity of Utopian communism is to contrast it with the principal earlier types of communistic theory.

In contrast to this Stoic-patristic view, Utopia implies that the nature of man is such that to rely on individual conscience to supply the deficiencies of municipal law is to embark on the bottomless sea of human sinfulness in a sieve.

And the surface is driven back, in its very surfaceness, only by this contrast.

We were to discover, in fact, that quite a number of people share with us the impression that, in contrast to other Soviet regions, Moscow's atmosphere is depressingly subdued and official.

His personality appears more striking by contrast with Marina, who is -- perhaps purposely -- rather superficially characterized.

We have a brief glimpse of the Tsar's public personality, the `` official Boris '', but our real focus is on the excitement of the crowd -- a significant contrast with its halfhearted acclamation in the opening scene, its bitter resentment and fury in the final act.

Pip imagines how Estella would look down upon Joe's hands, roughened by work in the smithy, and the deliberate contrast between her white hands and his blackened ones is made to symbolize the opposition of values between which Pip struggles -- idleness and work, artificiality and naturalness, gentility and commonness, coldness and affection -- in fact, between Satis House and the forge.

Today, by contrast it is a lively and colorful fruit, vegetable, and flower market.