Visible Wavelengths
Visible Wavelengths - Related Videos
02:32
The de Broglie Wavelength
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2020
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
09:21
Ultraviolet-Visible (UV-Vis) Spectroscopy
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Ultraviolet-visible (UV-Vis) spectroscopy is one of the most popular analytical techniques because it is very versatile and able to detect nearly every molecule. With UV-Vis spectroscopy, the UV-Vis light is passed through a sample and the transmittance of light by a sample is measured. From the transmittance (T), the absorbance can be calculated as A=-log (T). An absorbance spectrum is obtained that shows the absorbance of a...
10:35
Bringing the Visible Universe into Focus with Robo-AO
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Cited by 17 •
2013
Light from astronomical objects must travel through the earth's turbulent atmosphere before it can be imaged by ground-based telescopes. To enable direct imaging at maximum theoretical angular resolution, advanced techniques such as those employed by the Robo-AO adaptive-optics system must be used.
02:51
UV-Visible Spectroscopy for Monitoring Fibrin Clot Formation
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2025
This video demonstrates the use of a UV-visible spectrophotometer for monitoring insoluble fibrin clot formation as a function of the change in the solution turbidity. The UV-visible spectrophotometer measures the solution’s absorbance over time, which represents the turbidity change due to the insoluble fibrin clot formation.
01:33
Synergistic Photobiomodulation with a Dual-Wavelength Laser in an In Vitro Disease Model
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2025
Divide the transwell system into five groups that undergo various treatments.The first group serves as the control and consists of a co-culture of neuroblastoma and microglia cells.In the second group, treat the co-culturer with fibrillar β-amyloid (fAβ) alone. fAβ induces damage in neuroblastoma cells.In the third group, treat neuroblastoma cells with an 808-nanometer laser, then co-culture them with untreated microglia.The laser reduces oxidative stress, improving neuronal survival.In the...
FAQs
A material can reflect visible wavelengths back toward an observer, absorb some wavelengths, transmit others, or scatter light in different directions. The balance among these interactions determines the light reaching an eye or detector and therefore influences perceived color, measured intensity, and image quality. Engineers account for these behaviors when choosing optical materials and arranging components.
Wavelength-dependent responses allow optical systems to distinguish one part of the visible range from another. Human vision interprets these differences as colors, while sensors can respond differently across the same range. This variation matters when engineers design imaging, measurement, or machine-vision systems because the selected wavelengths affect the information the system records.
Selecting suitable visible wavelengths helps control how efficiently light interacts with the materials, detectors, and optical components in a system. Poorly matched choices can alter transmission, absorption, reflection, or scattering and change the detected signal. Careful wavelength selection therefore supports clearer measurements, controlled color, improved signal quality, and more effective optical performance.
A visible-light system may require an appropriate light source, filters, detectors, and optical materials. Each component should match the intended wavelength range and the desired response, such as imaging, measurement, communication, or display output. Considering these components together allows engineers to control which wavelengths are produced, transmitted, detected, or excluded.
Imaging and machine-vision systems use visible light to form images and obtain information from wavelength-dependent sensor responses. Engineers can select sources, filters, detectors, and materials to control the light reaching the imaging system. These choices support applications that require controlled color, measurable optical signals, or reliable visual information for engineered systems.
Visible wavelengths are useful when an application requires controlled light signals, visual output, or wavelength-sensitive measurement. Engineering systems apply them in fiber-optic and free-space communication, displays, lighting, and spectroscopy. The relevant design priorities differ by use, but all depend on managing sources, optical paths, detectors, or materials to achieve the intended signal, color, or energy performance.