By easy manipulation we are now enabled to give permanence to the charming pictures which are produced by means of that pleasing invention of Baptista Porta, the Camera Obscura.
These are directed upon, any white object, and from that object radiated upon a highly sensitive plate in a camera obscura.
Quite recently, thecamera obscura has come into use with submarine vessels, the periscope being simply a camera obscura under a new name.
He was the first to use the term camera obscura, and in a letter from Sir H.
Because the rays do not enter the mirror by a small aperture, and cross each other, as they do at the orifice of a camera obscura, or the pupil of the eye.
The fact that coals from all of the principal mining areas from Pennsylvania, west to Iowa, are sold at points in the Northwest for the same price, is due in greatest measure to transportation rates on the Great Lakes.
It is looked upon as so much water, that must be raised in temperature from that in which it is taken from the coal bin to the temperature and condition of vapor in which it passes into the chimney.
Suppose that, as in the case of Pennsylvania bituminous coal which contains 2.
Illustration] The form of a camera obscura used in a public exhibition is as follows:--D D is a large wooden box stained black in the inside, and capable of containing from one to eight persons.
It can be used so as to show the principle of a camera obscura, and to illustrate the manner in which photographic portraits are taken.
The human eye is a camera obscura, for on the back of it on the retina every object in a landscape is beautifully depicted in miniature.
Hitherto we have presented to the reader the representations of distant objects, obtained by the use of a Camera Obscura.
This method was, to take a Camera Obscura, and to throw the image of the objects on a piece of transparent tracing paper laid on a pane of glass in the focus of the instrument.
Camera Obscura, they attempted to do so, but obtained no result at all, however long the experiment lasted.
There are many applications of the “camera obscura”--a notable one being the periscope of a submarine.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "camera obscura" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
