It also combines with the metal, forming a pyrogallate--a dark brown, very non-actinic material.
Your ruby paper answers capitally, but I suspect that it is only for dimming the light, and I know not how to illuminate worms by the same intensity of light, and yet of a colour which permits the actinic rays to pass.
Either I erred in the early autumn or summer in some incomprehensible manner, or, as I suspect to be the case, water is only injurious to leaves when there is a good supply ofactinic rays.
This must be done in a subdued light, but not necessarily in a dark room or by non-actinic light, as in the case of the use of gelatine bromide paper.
Probably the two greatest rivals to the Dallmeyer Wide Angle Lens are the Actinic Doublet of Ross (Fig.
Sufficient of this non-actinic light may be admitted to enable the work of washing the emulsion, and afterwards the coating of the plates, to be carried on with ease and comfort, as the emulsion when wet is only half as sensitive as when dry.
Thus, a white-hot object liberates radiant energy or flux of many different wave-lengths corresponding to what we know as "heat, light and actinic rays.
All of the energy of Pyrophorus light would therefore lie in the visible region and its efficiency (light rays / heat + light + actinic rays) would be 100 per cent.
Ochorowicz concluded that: The actinic action of the emitted rays is feeble, comparatively speaking; and that the visible light of the fluidic hands is less actinicthan the invisible light.
Simply the darkening of preparations of silver, by the actinic rays.
In what season of the year is the actinic power of light the greatest?
Because of theactinic powers that accompany the solar light.
Mr. Gaffield also extended his experiments to ascertain the power of different coloured glasses to transmit the actinic or chemical rays, and found that blue would transmit the most and red and orange the least.
After the drying of all the paints, it was decided that it would be of extreme interest to conduct a test on the resistance of certain paints to actinic light.
The peculiar property which it possesses, of darkening under the actinic rays of the sun, makes it essential that it be combined with other, more stable pigments to prolong its life when exposed to weather.
Flashes of incredibly vivid actinic flame leaped from queer engines that opened upon them.
Far away, in the jungle, the infinitely vivid actinicflame blazed for several seconds.
There was another flash of that unbearable actinic flame.
The rays which have this effect are the blue and violet rays at one end of the spectrum, and even invisible rays beyond the violet, the red and yellow rays having little or no such actinic effect.
Rivaling the sun in actinic power, and writing its autograph with an unseen hand, it is truly called the X-, or unknown, ray.
We now know that the art of photography is dependent upon the actinic effect of certain of the rays of the spectrum upon certain chemical salts, notably those of silver and chromic acid, in connection with organic matter.
A whiteactinic light shot from it--caught us, bathed us.
I stared, but I had to shield my eyes against the dazzling actinic glare, and I could see nothing.
But the figure passed beyond the actinic glare and vanished.
The object which reflects the light--whether it be the ordinary light or the actinic rays--must be material.
Vulcanite is transparent to red and infra-red rays which, although without action upon an unexposed plate, are capable of continuing the action of actinic rays upon a plate which has been exposed for a very short time.
Its high actinic power makes it specially useful to photographers, while in factories, drafting rooms, composing rooms and so on, its color is unobjectionable.
The actinic property or force begins among the green rays, is strongest in the violet rays, and extends a long way beyond the visible spectrum.
Pale blue is a very actinic color which is not reproduced in photography, except by the ortho-chromatic process, or if it does, the impression being very weak, is not objectionable.
On the scale across the room the actinic beams from them were magnified into sweeps of light.
Defn: A method of printing, in which the image is fully brought out by the direct actinic action of light without subsequent development by means of chemicals.
Defn: To render sensitive, or susceptible of being easily acted on by the actinic rays of the sun; as, sensitized paper or plate.
Defn: Highly actinic light, derived from sunlight or from some form of electric lamp, used in the treatment of lupus and other cutaneous affections.
Defn: to subject (a plate or film) too long to the actinic action of the light used in producing a picture.
Optics) Defn: Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays.
Readily affected or changed by certain appropriate agents; as, silver chloride or bromide, when in contact with certain organic substances, is extremely sensitive to actinic rays.
The light came from the crudely mounted weapon of the Ragged Men, and it was an unbearable actinic glare.
The lights," he said: "we supply theactinic rays that the clouds cut off above.
With approach to that zone, Kapteyn noticed a steady growth of actinic intensity relative to visual brightness in the stars depicted on the Cape Durchmusterung plates.
The extreme actinic feebleness of the equatorial bands was strikingly apparent on his plates.
Any better result was indeed impossible, the moisture-laden air having cut down the actinic power of the coronal light to one-fourth its previous value.
Hence, it is often found that the actinicfocus falls within, or is shorter than, the visual.
We have already described the various remarkable photographic pictures which may be taken by successive exposures with the same individual in different positions against a perfectly black and non-actinic background.
Very effective results may be made by printing with wide white margins, obtained by exposing with a non-actinic mask.
Instantaneous photography can only be successfully performed in very bright and actinic light, and should never be attempted on dull days, as underexposure will be the inevitable result.
This faint yellow image, although hardly visible in the negative, had, being of a non-actinic color, given quite a distinct image in the positive.
If an object be placed against a non-actinic background and an exposure made, the black parts surrounding it will not have any effect upon the plate, and the object can be shifted to another part and another exposure made.
Thin plates of selenite or of quartz, placed between the Nicol and the actinic cloud, displayed the colours of polarised light, these colours being most vivid when the line of vision was at right angles to the experimental tube.
The forms assumed by some of those actinic clouds, as I propose to call them, in consequence of rotations and other motions, due to differences of temperature, are perfectly astounding.
To nourish the vegetation of the earth the actinic and luminous rays of the sun must penetrate our atmosphere; and to such rays aqueous vapour is eminently transparent.
For ten or fifteen minutes after its first appearance the light from a vividly illuminated actinic cloud, looked at perpendicularly, is absolutely quenched by a Nicol's prism with its longer diagonal vertical.
Morren was mistaken in supposing that a modicum of sulphurous acid, in the drying tubes, had any share in the production of the 'actinic clouds' described by me.
When in India we wore actinic underwear, dark glasses, and solar topees to protect us from the excessive light.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "actinic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
