Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" Having focussed the object, replace a, and gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the spectrum differs a little from adjacent parts in refrangibility,... "
Optics: Light and Sight Theoretically and Practically Considered, with Their ... - Page 231
by Edward Nugent - 1870 - 268 pages
Full view - About this book

The Microscope: Its History, Construction, and Application, Being a Familiar ...

Jabez Hogg - 1867 - 752 pages
...if opaque. Remove A, and open the slit by means of the milled-head, not shown in cut, but which is at right angles to D D. When the slit is sufficiently...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book

Spectrum Analysis -- Six Lectures

Henry E. Roscoe - 1869
...bull's eye, &c. Eemove a, and open the slit by means of the milled head, not shown in cut, but which is at right angles to d d. "When the slit is sufficiently...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book

Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1870 - 404 pages
...bull's-eye, &c. Remove a, and open the slit by means of the milled head, not shown in cut, but which is at right angles to d d. When the slit is sufficiently...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book

Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1869
...and open the slit by means of the milled head, not shown in cut, but which is at right angles to dd. When the slit is sufficiently open, the rest of the...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book

Cyclopadic Science Simplified

John Henry Pepper - 1869 - 685 pages
...and open the slit by means of the milled head, not shown in cut, but which is at right angles to I' D. When the slit is sufficiently open, the rest of...like an ordinary eye-piece, and any object can be focused in the usual way. Having focused the object, replace A, and gradually close the slit till a...
Full view - About this book

Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1870
...bull-s-eye, &c. Remove a, and open the slit by means of the milled head, not shown in cut, but which is at right angles to d d. When the slit is sufficiently...acts like an ordinary eyepiece, and any object can lie focussed in the usual way. Having focussed the object, replace a, and gradually close the slit...
Full view - About this book

Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1873
...bull's-eye, &c. Remove a, and open the slit by means of the milled head, not shown in cut, but which is at right angles to d d. When the slit is sufficiently...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. out by accurately...
Full view - About this book

Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1873 - 484 pages
...and open the slit by means of the milled head, not shown in cut, but which is at right angles to dd. When the slit is sufficiently open, the rest of the...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book

Cyclopædic science simplified

John Henry Pepper - 1877
...bull's-eye, &c. Remove A, and open the slit by means of the milled head, not shown in cut, but which is at right angles to D D. When the slit is sufficiently...like an ordinary eye-piece, and any object can be focused in the usual way. Having focused the object, replace A, and gradually close the slit till a...
Full view - About this book

How to work with the spectroscope

John Browning (F.R.A.S.) - 1878 - 66 pages
...opaque, or by side reflector, bull's-eye, &c. Remove A, and open the slit by means of the milled head, H, at right angles to D D. When the slit is sufficiently...gradually close the slit till a good spectrum is obtained. The spectrum will be much improved by throwing the object a little out of focus. Every part of the...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF