In one of the walls of the apparatus shed--if possible not that having a door--a window must be fitted which cannot be opened; and outside that window an artificial light is to be placed.
Outside this window may be suspended an ordinary hand- lantern burning oil or paraffin; or, preferably, round this window may be built a closed lantern into which some source of artificial light may be brought.
The conventional method of making pecuniary comparisons between different sources of artificial light consists in simply calculating the cost of developing a certain number of candle-hours of light--i.
Indoors the architect has a powerful controllable medium inartificial light which he may draw upon for producing various expressions or moods in rooms.
The window should be fitted with outside blinds so that the theatre can be easily darkened for the operations, such as capsulotomy, which require the use of artificial light.
The operation is best performed by artificial light.
The color in sapphires ranges from a pale watery blue through deeper shades (often tinged with green) to the rich velvety cornflower blue that is so much in demand, and on to dark inky blues that seem almost black by artificial light.
By artificial light, too, the garnet is dark as compared with the true ruby, and the latter shows its color at a distance much more strongly than the garnet.
The latter are of a reddish purple (sometimes almost red) by artificial light, but of a fine violet by daylight.
Some of the sapphires from Montana, however, are of a bright electric blue that is very striking and brilliant by artificial light.
By the way, although gymnastics do not need daylight (artificial light is just as good for them), one never hears of a gymnasium in a coal cellar.
So far as possible avoid continuous reading in large or heavy books by artificial light.
In all ways endeavour to favour the eyes by doing the most difficult reading by daylight, and saving the better print and the books that are easier to hold for work by artificial light.
No artificial light, if it can possibly be avoided, should be used when performing the autopsy; artificial light is especially bad on account of its yellowness and its power to modify natural color.
Many diseased conditions cannot be satisfactorily determined by artificial light.
Artificial light is, or should be, fairly constant in intensity, and if adopted there will probably be less waste of material through miscalculation of exposure.
The first point however that the reader must decide is whether he will work by artificial light or by daylight.
For this reason it is much better to judge the opacity of negatives by artificial light than by daylight, the intensity of the latter being so variable.
The production of artificial light by electrical and chemical agencies will necessarily find some consideration under their respective heads.
It is not safe to match colors by artificial light; cloth which looks red by night may be almost purple by day.
In the majority of studios, however, all scenes taken indoors are produced with the aid of artificial light, daylight being excluded.
In some studios, the fact that walls and ceiling are of glass permits the taking of most scenes, on a bright day, without the aid of artificial light.
If we could for a moment suppose the privation of artificial light, it would follow as an immediate consequence that the greatest part of the globe on which we dwell, would cease to be the habitation of man.
From what has been stated in the preceding pages it becomes obvious, that a substance yielding an artificial light may be obtained from common coal in immense quantities.
How much do our comforts, and how greatly does the extent of our powers, in the common affairs of life, depend upon the production and supply of artificial light.
For the illuminant used in enlarging, we may employ either daylight or artificial light.
Some light, of course, is necessary for reading the scales, and if artificial light is employed for this purpose, the sources chosen should be such that as little heat as possible will be generated by them.
Do not allow them to study much by artificial light.
If the room is lighted by artificial light, the best way is to cut an opening in the wall or partition at the most convenient place, make a frame to fit or cover this opening, that will raise or slide, glaze it with red orange glass.
With this apparatus and an artificial light, of course rapid printing paper is necessary.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "artificial light" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
