13 examples of optically in sentences

He has demonstrated that ordinary air is no better than a sort of stirabout of excessively minute solid particles; that these particles are almost wholly destructible by heat; and that they are strained off, and the air rendered optically pure, by its being passed through cotton-wool.

Not all that is optically possible to be seen, is to be shown in every picture.

One proviso, however, must be made; where any important effect depends upon a given object, or a particular arrangement of the scene, the playwright cannot too soon assure himself that the object comes well within the physical possibilities of the stage, and that the arrangement is optically possible and effective.

I am propelled to the consideration of this subject by having optically perceived that ingenious nautical instrument, which has just now flown along like a mammoth, that monster of the deep!

No more block-making for photographs and illustrations; these were optically processed directly to printing plates.

I may mention a plan which had occurred both to Mr. Herbert Spencer and myself, the principle of which is to superimpose optically the various drawings, and to accept the aggregate result.

I may add that it is perfectly easy to superimpose optically two portraits by means of a stereoscope, and that a person who is used to handle instruments will find a common double eyeglass fitted with stereoscopic lenses to be almost as effectual and far handier than the boxes sold in shops.

The stereoscope, as I stated last August in my address at Plymouth, affords a very easy method of optically superimposing two portraits, and I have much pleasure in quoting the following letter, pointing out this fact as well as some other conclusions to which I also had arrived.

I have tried many other plans; indeed the possible methods of optically superimposing two or more images are very numerous.

Three of these composites, though taken from entirely different sets of individuals, are as alike as brothers, and it is found on optically combining any three out of the five composites, that is on combining almost any considerable number of the individuals, the result is closely the same.

In order to use this large radius (distance from slit to revolving mirror), it was necessary that the mirror should be large and optically true; also, that the lens should be large and of great focal length.

Some are coiled to the right and others to the left; and it is remarkable that, like dextrose and levulose, their juices are optically the reverse of each other when studied by polarized light.

RÖNTGEN RAYS, described by Dr. Knott as "rays of light that pass with ease through many substances that are optically opaque, but are absorbed by others."

13 examples of  optically  in sentences