Related Experiment Video
Updated: Jun 16, 2026

10:25
Easy and Accurate Mechano-profiling on Micropost Arrays
Published on: November 17, 2015
Detection of Low Contrast Targets at 5 microm and 10 microm: a Comparison
Applied Optics
|February 2, 2010
Abstract:
The purpose of this experimental study is to compare the performance of two types of ir detectors for detection of distant ships against a sea or horizon background. The detectors are of the InSb and Hg(1-x) Cd(x)Te types, sensitive in the 5-microm and 10-microm region, respectively. The results obtained from radiometric measurements seem to confirm theoretical estimates that the Hg(1-x)Cd(x)Te detector is superior for this task compared to the InSb detector.
Related Concept Videos
Difference from Background: Limit of Detection
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
Phase Contrast and Differential Interference Contrast Microscopy
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
Super-resolution Fluorescence Microscopy
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

