Popular Tutorials

  1. Spatial Resolution in Digital Imaging

    Spatial resolution refers to the number of pixels utilized in construction of the image.

  2. Field of View Diameter

    Exploring the effect of varying the field of view size on the viewable specimen area.

  3. Microscope Alignment for Köhler Illumination

    Learn how to adjust a microscope to examine specimens in Köhler illumination.

  4. Stochastic Optical Reconstruction Microscopy (STORM) Imaging

    Review the basic steps involved in acquiring a STORM super-resolution image.

  5. Numerical Aperture and Image Resolution

    Explore how objective numerical aperture size influences Airy disk properties.

  6. Comparison of Phase Contrast and DIC Microscopy

    Examples of the same specimen viewed in either phase contrast or DIC.

  7. Matching Camera to Microscope Resolution

    Vary numerical aperture, magnification, and video coupler size to match camera resolution.

  8. Laser Scanning Confocal Microscopy

    A virtual microscope tutorial featuring a wide variety of specimens.

  9. Objective Working Distance

    Examine the range of working distance values available in modern Nikon CFI60 objectives.

  10. Eyepiece Reticle Calibration

    Explores calibration of various eyepiece reticles using a stage micrometer and demonstrates how the reticle can then be employed to determine linear specimen dimensions.

  1. Immersion Oil and Refractive Index

    The refractive index is critical in determining the working numerical aperture of an objective.

  2. Chromatic Aberration

    Explore axial and lateral chromatic aberrations seen in an optical microscope with this interactive tutorial.

  3. CCD Signal-To-Noise Ratio

    Signal-to-noise represents the ratio of the measured light signal to the combined noise.

  4. Phase Contrast Microscope Alignment

    Learn how to align a phase contrast microscope and examine variations in specimen appearance through the eyepieces (at different magnifications) when the condenser annulus is shifted into and out of alignment with the phase plate in the objective.

  5. Birefringence in Calcite Crystals

    Examine how crystals of the mineral calcite demonstrate birefringence.

  6. Depth of Field Calculator

    Calculate the depth of field for popular objectives with this interactive tutorial.

  7. Birefringent Crystals in Polarized Light

    Explore how birefringent anisotropic crystals interact with polarized light in an optical microscope as the circular stage is rotated through 360 degrees.

  8. Adjustment of Objective Correction Collars

    Learn how to adjust an objective correction collar to minimize spherical aberration.

  9. Tube Lens Focal Length

    Infinity optical systems feature tube lengths between 200 and 250 millimeters.

  10. Choosing Filter Combinations for Fluorescent Proteins

    Identification of critical filter parameters for imaging fluorescent proteins.