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Anatomy of the Microscope - Mechanical Tube Length
Themechanicaltubelengthofanopticalmicroscopeisdefinedasthedistancefromthenosepieceopening,wheretheobjectiveismounted,tothetopedgeoftheobservationtubeswheretheeyepieces(oculars)areinsrted.
2018-03-30 Pooher Inc. 377
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Microscope Objectives: Numerical Aperture and Resolution
The numerical aperture of a microscope objective is a measure of its ability to gather light and resolve fine specimen detail at a fixed object distance.
2018-03-29 Pooher Inc. 441
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Anatomy of the Microscope - Microscope Objectives
A majority of microscope manufacturers also offer a wide variety of objectives having unique configurations designed to perform specific functions not normally found on common laboratory microscopes.
2018-03-29 Pooher Inc. 321
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Microscope Objectives: Specifications and Identification
Microscope Objectives: Specifications and Identification
2018-03-28 Pooher Inc. 1224
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Microscope Objectives - Introduction
Microscope objectives are perhaps the most important components of an optical microscope because they are responsible for primary image formation and play a central role in determining the quality of images that the microscope is capable of producing.
2018-03-28 Pooher Inc. 1281
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Anatomy of a Microscope - Image Brightness
Regardless of the imaging mode utilized in optical microscopy, image brightness is governed by the light-gathering power of the objective, which is a function of numerical aperture.
2018-03-27 Pooher Inc. 238
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Köhler Illumination in Reflected Light
Köhler Illumination in Reflected Light
2018-03-27 Pooher Inc. 231
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Köhler Illumination - Light Sources
Early microscopists relied on oil lamps and natural sunlight to provide an external source of illumination for their primitive (but often remarkably accurate) microscopes.
2018-03-26 Pooher Inc. 128
