The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ...
The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ...
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In our eReader you can find the full English version of the book. Read The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ... Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ...
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To quickly assess the difficulty of the text, read a short excerpt:
With a piece of perforated paper or tin or lace, or still better, with an eidotrope, which consists of two disks of perforated tin made to revolve in opposite di- rections, like the chromatrope, a very beautiful exhi- bition of the phenomenon of diffraction may be given in the following way : — Take two large, short, focus lenses, such as form the condensers in Marcy's sciopticon. Place one close to the opening to \ht porte lumiere^ as shown in the figure.
The second one may be put so far in fr...ont of the other 138 THE ART OF PROJECTING.
lens that the beam is again crossed in front of it, and the disk upon the screen is of the desired size, six or eight feet in diameter. Now introduce the perforated paper or the eidotrope at the place marked e. The screen will appear covered with minute spectra, as each hole will form one or more spectra ; but if the paper be held at ^, between the lens and the screen, the projection becomes very gaudy and symmetrical. If it be the eidotrope, turn it while held in that place, and the colors will change and will rival the colors pro- duced by polarized light.
What to read after The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ...?
You can find similar books in the "Read Also" column, or choose other free books by A E Amos Emerson Dolbear to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
With a piece of perforated paper or tin or lace, or still better, with an eidotrope, which consists of two disks of perforated tin made to revolve in opposite di- rections, like the chromatrope, a very beautiful exhi- bition of the phenomenon of diffraction may be given in the following way : — Take two large, short, focus lenses, such as form the condensers in Marcy's sciopticon. Place one close to the opening to \ht porte lumiere^ as shown in the figure.
The second one may be put so far in fr...ont of the other 138 THE ART OF PROJECTING.
lens that the beam is again crossed in front of it, and the disk upon the screen is of the desired size, six or eight feet in diameter. Now introduce the perforated paper or the eidotrope at the place marked e. The screen will appear covered with minute spectra, as each hole will form one or more spectra ; but if the paper be held at ^, between the lens and the screen, the projection becomes very gaudy and symmetrical. If it be the eidotrope, turn it while held in that place, and the colors will change and will rival the colors pro- duced by polarized light.
What to read after The Art of Projecting: a Manual of Experimentation in Physics, Chemistry ...?
You can find similar books in the "Read Also" column, or choose other free books by A E Amos Emerson Dolbear to read onlineMoreLess
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