The SP detector from Leica Microsystems denotes a compound detection unit for point scanning microscopes, in particular confocal microscopes. The SP detector splits light into up to 5 spectral bands. The bands are independent and continuously tunable wit
What is the energy of a photon red light (wavelength = 630 nm)? What is the ratio of the energy of a photon of light at the red end of the visible spectrum, 676 nm, to that of a photon at the blue end of the visible spectrum, 415 nm? Why is ultraviolet light, but not infrare...
With proper filtering, a waveform such as the one shown in Figure 1-1 can be decomposed into separate sinusoidal waves, or spectral components, which we can then evaluate independently. Each sine wave is characterized by its amplitude and phase. If the signal we wish to analyze is periodic, ...
Spectrometers are the most prevalent type of spectral device. Optical spectrometers can be used to study how light interacts with, or is emitted by, a sample. This is known as optical spectroscopy (or spectrometry). The name 'optical spectrometer' is a broad term, as there are a number of...
frequencies. This enables the full frequency range of the device to be analyzed. In this case, the resolution bandwidth is closely related to the minimum bandwidth detectable by the device and is controlled by the bandpass filter. A smaller bandwidth yields a higher spectral resolution, and vice...
and many other beverages. Below is an example of an Italian wine sample measured before and after a week-long oxidation treatment (exposure to air). The EEM and corresponding absorbance spectra give a fingerprint of the wine that show changes to the fluorescence spectral shape and intensity for...
3.Reflection/Transmission Measurement: The amount of light reflected or transmitted by the sample at each wavelength is measured. 4.Data processing: The instrument records these reflectances or transmittances and generates spectral data, which can then calculate the color data of the sample (such as...
What is a Power Spectral Density (PSD)? How is it different than an autopower? A Power Spectral Density (PSD) is the measure of signal's power content versus frequency. A PSD is typically used to characterize broadband random signals. The amplitude of the PSD is normalized by the spectral...
▸ How does a spectrometer work? An optical spectrometer is a machine that takes light and digitizes its spectral components. Once the spectrometer receives the light, it translates the data as a wavelength and shows it on a computer. The other type of spectrometer is called the mass spectro...
Pixels represent a location on the ground In addition to its spectral characteristics, a pixel represents a ground location. The figure below illustrates the relationship between the physical pixel in the sensor and the effective area the pixel represents on the ground. This relationship is a functi...