Optical microscopic imaging resolution has a theoretical limit of approximately 200 nm within the visible light spectrum due to the far-field diffraction limit, which prevents the technique from being ...

Optical microscopy is a very useful technique to examine the appearance of a sample with greater detail, but there are some limitations that provide a boundary to its use in practice. Cross section of ...

Constructed with an LCD digital display, multiple lenses and XY stage plate navigation, the Celestron PentaView feels professional, enables specimens to be viewed by a large audience and is an ...

Light microscopy is used to make small structures and samples visible by providing a magnified image of how they interact with visible light, e.g., their absorption, reflection and scattering. This is ...

Which stereo microscopes are best? Depending on how you plan to use it, finding the best stereo microscope for your needs can actually make a huge difference. However, making sense of the various ...

Receive emails about upcoming NOVA programs and related content, as well as featured reporting about current events through a science lens. The new microscope uses a 405 nm laser—the same wavelength ...

In 2011, while waiting for his new lab to be built at Stanford University, bioengineer Manu Prakash traveled to labs around the world, including in his home country of India. When he came across ...

Fundamentally, a microscope comprises two subsystems: an illumination system to illuminate the sample and an imaging system that produces a magnified image of the light that has interacted with the ...