The Art of Projecting a Manual of Experimentation in Physics Chemistry And Na
The Art of Projecting a Manual of Experimentation in Physics Chemistry And Na
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To project the spectrum of any substance what- ever it must be heated until its vapor is brilliantly incandescent. The heat of the electric arc is best for this work as every substance is vaporized there. The lime light may be used to exhibit the prin- ciples of spectrum analysis, but its heat is insufii- cient for most of the metals. The characteristic lines of Sodium, Calcium, Lithium, Barium, Stron- tium, Potassium, and Copper may be tolerably well exhibited with a lantern furnished with oxy...hydrogen jet and gases.
I St. To exhibit the spectrum : — Produce the lime light as you would for common projection. Remove the objective and place at the I20 THE ART OF rROJECTING.
focus in front of the lantern the slit d. The objective o may then be so placed as to project a sharp image of the slit upon a screen in front of it at a distance of fifteen or twenty feet ; then place the triangular prism Fig. 92.
close to the objective. The screen will now need to be moved, that the refracted rays may fall upon it, and at the same distance from the objective that it stood in front, otherwise the edges of the spectrum will appear blurred.
What to read after The Art of Projecting a Manual of Experimentation in Physics Chemistry And Na?
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:
To project the spectrum of any substance what- ever it must be heated until its vapor is brilliantly incandescent. The heat of the electric arc is best for this work as every substance is vaporized there. The lime light may be used to exhibit the prin- ciples of spectrum analysis, but its heat is insufii- cient for most of the metals. The characteristic lines of Sodium, Calcium, Lithium, Barium, Stron- tium, Potassium, and Copper may be tolerably well exhibited with a lantern furnished with oxy...hydrogen jet and gases.
I St. To exhibit the spectrum : — Produce the lime light as you would for common projection. Remove the objective and place at the I20 THE ART OF rROJECTING.
focus in front of the lantern the slit d. The objective o may then be so placed as to project a sharp image of the slit upon a screen in front of it at a distance of fifteen or twenty feet ; then place the triangular prism Fig. 92.
close to the objective. The screen will now need to be moved, that the refracted rays may fall upon it, and at the same distance from the objective that it stood in front, otherwise the edges of the spectrum will appear blurred.
What to read after The Art of Projecting a Manual of Experimentation in Physics Chemistry And Na?
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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