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achromatic lens
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achromatic lens A lens that corrects for chromatic
aberration by using a combination of two lenses, made of different kinds of glass, such that their
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Related newspaper, magazine, and journal articles from HighBeam Research
 "Liverpool Echo (Liverpool, England)")
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Microscope stands up to scrutiny; Under the Hammer.(Features)
Liverpool Echo (Liverpool, England)
; Byline: by Mike Litherland of Outhwaite & Litherland ON one of my numerous calls, I came across a small mahogany box. In itwas the brass body and feet of a microscope made by Powell & Lealand. Unfortunately, the objective and subjective lenses were missing, but it was still valued at pounds 800 to
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Top Of The Pops
Stage Directions
; SD spoke with several lighting designers and technical directors across the country to find out which lighting products stand out in the crowd. Here are a few highlights. Tales From The Krypton The MAC 250 Krypton from Martin Professional features a number of significant changes that make this
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Implications of the new technology for pathology: Descending levels of analysis
Archives of Pathology & Laboratory Medicine
; Editorial In pathology, there are three levels of analysis-macroscopic, microscopic, and molecular. The descent down these levels is a reflection of scientific progress in pathology. Historically, macroscopic or gross analysis came first with the rise of morbid anatomy during the Renaissance. This
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History of the development of the crystallographic goniometer
Mineralogical Record
; Instruments for the measurement of the angles between crystal faces have been constructed in an astonishing variety of types and degrees of complexity. They range from the pocket-size contact goniometers, as first designed by Carangeot in 1782, up to gigantic three-circle reflecting goniometers
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Pyrometric Temperature and Size Measurements of Chalcopyrite Particles during Flash Oxidation in a Laminar Flow Reactor
Metallurgical and Materials Transactions
; A fast two-color pyrometer has been constructed and applied to simultaneous temperature and size measurements of individual chalcopyrite particles (CuFeS^sub 2^) during flash oxidation in a laminar flow reactor. The influence of different oxygen concentrations (0, 10, 20, 50, and 75 vol pct), gas
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History of the development of the crystallographic goniometer.(Special Issue: Goniometers!)
The Mineralogical Record
; Instruments for the measurement of the angles between crystal faces have been constructed in an astonishing variety of types and degrees of complexity. They range from the pocket-size contact goniometers, as first designed by Carangeot in 1782, up to gigantic three-circle reflecting goniometers
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The petrographic microscope: evolution of a mineralogical research instrument.
The Mineralogical Record
; ... Additionally, Lima-de-Faria (1990a) provides informative time maps of the development of crystallography and optical science. It ... Economic Geology, 55, 1306-1312. LIMA-de-FARIA, J. (1990a) Time-maps of crystallography. In Historical Atlas of Crystallography ... Japan--as an example of the life-cycle of a ...
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Efficient energy transfer from the carotenoid S(2) state in a photosynthetic light-harvesting complex
Biophysical Journal
; ABSTRACT Previously, the spatial arrangement of the carotenoid and bacteriochlorophyll molecules in the peripheral light-harvesting (LH2) complex from Rhodopseudomonas acidophila strain 10050 has been determined at high resolution. Here, we have time resolved the energy transfer steps that occur
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Illuminating Delights
Stage Directions
; The latest in technical equipment and theatrical wares. Marquee Mania Entertainment Technology's Marquee 24/48 is a powerful professional lighting control console especially designed for schools and universities, local theaters, churches and any other group that needs a robust yet easy-to-use
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HISTORICAL DEVELOPMENT of the PETROGRAPHIC MICROSCOPE
Mineralogical Record
; ... the important events that pertain to the petrographie microscope. Additionally, Lima-de-Faria (1990a) provides informative time maps of the development of crystallography and optical science. It is noteworthy that most of the advances in crystallography (and ...
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