| Henry Enfield Roscoe - 1870 - 514 pages
...the slit at the top of the eyepiece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkiihn and darken well if opaque, or by side-reflector... | |
| John Henry Pepper - 1869 - 722 pages
...slit at the top of the eye-piece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkuhn and dark well if opaque, or by side reflector,... | |
| Henry E. Roscoe - 1869 - 372 pages
...the slit at the top of the eyepiece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberktihri and darken well if opaque, or by side-reflector... | |
| sir Henry Enfield Roscoe - 1869 - 396 pages
...the slit at the top of the eyepiece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkuhu and darken well if opaque, or by side-reflector... | |
| Edward Nugent - 1870 - 304 pages
...the slit at the top of the eye-piece is in the same direction as the slit below the prism. Screw on the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror, if transparent ; with mirror lieberkuhn and dark well, if opaque, or by side reflector,... | |
| Henry Enfield Roscoe - 1873 - 542 pages
...the slit at the top of the eyepiece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkiihn and darken well if opaque, or by side-reflector... | |
| John Henry Pepper - 1877 - 764 pages
...slit at the top of the eye-piece is in the same direction as the slit below the prism. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkuhn and dark well if opaque, or by side reflector,... | |
| John Browning (F.R.A.S.) - 1878 - 80 pages
...is applied. To use this instrument, insert G, like an eye-piece in the Microscope tube. Screw on to the Microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and lieberkiihn and dark well if opaque, or by side reflector,... | |
| Eneas Sweetland Dallas - 1870 - 532 pages
...top of the eye-piece is in the same direction as the slit below the prism. Screw on the m'croscope the object-glass required, and place the object whose...spectrum is to be viewed on the stage. Illuminate with stage-mirror — i, if transp arent ; with mirror, lieberkuhn,and dark well, if opaque ; or by sidereflec... | |
| Every boy - 1881 - 932 pages
...is npplied. To use this instrument, insert o, like an eye-piece in the microscope tube. Screw on to the microscope the object-glass required, and place...spectrum is to be viewed on the stage. Illuminate with stage mirror if transparent, with mirror and Lieberkiihn and dark well if opaque, or by side reflector,... | |
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