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Transmitted Darkfield Illumination
Allofusarequitefamiliarwiththeappearanceandvisibilityofstarsonadarknight,thisdespitetheirenormousdistancesfromtheEarth.
2018-04-17 Pooher Inc. 287
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Contrast in Optical Microscopy
When imaging specimens in the optical microscope, differences in intensity and/or color create image contrast, which allows individual features and details of the specimen to become visible. Contrast is defined as the difference in light intensity between the image and the adjacent background relative to the overall background intensity. In general, a minimum contrast value of 0.02 (2 percent) is needed by the human eye to distinguish differences between the image and its background.
2018-04-16 Pooher Inc. 162
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Microscopy ergonomics
Upon walking in o a busy laboratory it isn't unusual to see microscopes sitting on books, tilted at odd angles, and otherwise precariously supported in a variety of positions to accommodate their users.
2018-04-16 Pooher Inc. 191
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Reflected Light Microscopy
Reflected light microscopy is often referred to as incident light, epi-illumination, or metallurgical microscopy, and is the method of choice for fluorescence and for imaging specimens that remain opaque even when ground to a thickness of 30 microns.
2018-04-13 Pooher Inc. 207
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Anatomy of a Microscope - Substage Condensers
The substage condenser gathers light from the microscope light source and concentrates it in o a cone of light that illuminates the specimen with uniform intensity over the entire viewfield.
2018-04-12 Pooher Inc. 237
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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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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
