Search Results
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Various distilling apparatus
- 1910s – circa
Various distilling apparatus: Axtell's, Krafft & Noerdlinger's, Muencke's, Bruehl's.
- Creator Of Work Emil Greiner Company
- Subject Distillation apparatus, Scientific apparatus and instruments, Chemical apparatus
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Toepler-Holtz electrical machine
- 1910s – circa
Electrostatic induction device with plates and electrodes.
- Creator Of Work Emil Greiner Company
- Subject Scientific apparatus and instruments, Chemical apparatus
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Various distilling apparatus
- 1910s – circa
4880a. For purifying mercury, U. S. Weather Bureau pattern.
4881. With central condenser, suitable for nitrogen, alcohol etc.
4882. For the recovery of volatile solvents used in extraction.- Creator Of Work Emil Greiner Company
- Subject Distillation apparatus, Scientific apparatus and instruments, Chemical apparatus
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Galvanic batteries
- 1910s – circa
Devices converting chemical reactions to electric energy.
- Creator Of Work Emil Greiner Company
- Subject Scientific apparatus and instruments, Electric batteries, Chemical apparatus
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Brace Spectrophotometer
- 1911
"The instrument is designed after suggestions from Prof. D. B. Brace, for whom a number of these instruments were built."
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Melloni's Apparatus
- 1911
"For studying the reflection, refraction, absorption and polarization of radiant heat."
- Creator Of Work Wm. Gaertner & Company
- Subject Scientific apparatus and instruments, Laboratories--Equipment and supplies, Measuring instruments
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Spectrometers with Polarizing Attachment and Camera Attachment
- 1911
Top figure is a laboratory spectrometer with a polarizing attachment. Lower figure is a spectrometer with a third arm and camera attachment.
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Ives Duplex Diffraction Spectroscope
- 1911
"This spectroscope will show the first order of spectrum all at once across the field of the eyepiece."
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Heliostats
- 1911
Top figure is a Foucault heliostat, which reflects the rays of the sun in a horizontal direction. Bottom figure is a two-mirror heliostat, where the second mirror allows the path of the light beam to be thrown in any…
- Creator Of Work Wm. Gaertner & Company
- Subject Scientific apparatus and instruments, Heliostat, Laboratories--Equipment and supplies, Measuring instruments
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Littrow Spectroscope
- 1911
"The collimators and observing telescopes have apertures of 50mm., and focus by rack and pinion. Two 60 degree prisms of heavy flint glass and of 70mm. side are furnished with the instrument. The mirror may be used in…
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Small Comparator
- 1911
An "instrument intended for measuring spectra photographs, gratings, divided scales, or such objects which can be focused by the microscope and will allow rapid measurements of the highest possible accuracy." The design…
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Portrait of Isaac Ott (1847-1916)
- Circa 1910
Portrait of Isaac Ott (1847-1916). Ott was born in Northampton County, Pennsylvania on November 30, 1847 and graduated from Lafayette College (class of 1867). Ott went onto study medicine at the University of…
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Professor Wohler
- After 1840 – before 1940
A half-length portrait of Friedrich Wöhler (1800–1882), a German chemist.
- Artist Cook, Conrad
- After L'Allemand, Conrad, 1809-1880
- Subject Wöhler, Friedrich, 1800-1882