Results 61 to 70 of about 41,435 (217)

Calibrating the elements of a multispectral imaging system [PDF]

open access: yes, 2009
We describe a method to calibrate the elements of a multispectral system aimed at skylight imaging, which consists of a monochrome charge-coupled device (CCD) camera and a liquid-crystal tunable filter (LCTF).
Campos Acosta, Joaquín   +4 more
core   +1 more source

Advances in Miniaturized Computational Spectrometers

open access: yesAdvanced Science, Volume 11, Issue 47, December 18, 2024.
This review presents a comprehensive overview of miniaturized computational spectrometers, focusing on spectral encoding strategies and reconstruction algorithms. The analysis includes recent advances, optimization strategies, performance metrics, and considerations for practical applications.
Qian Xue   +8 more
wiley   +1 more source

Tyndall, Rayleigh, Mei, and Raman scattering: Understanding their role in aesthetics

open access: yesJournal of Cosmetic Dermatology, Volume 23, Issue 11, Page 3493-3496, November 2024.
Abstract The role of various light scattering phenomena in aesthetics and clinical practice is explored in this review. Four main types of light scattering, Tyndall, Rayleigh, Mie, and Raman, are discussed. Each type is explained in terms of its physical principles and its applications in aesthetic medicine.
M. D. Humzah
wiley   +1 more source

Polarizing optics in a spider eye [PDF]

open access: yes, 2018
Many arthropods including insects and spiders exploit skylight polarization for navigation. One of the four eye pairs of the spider Drassodes cupreus is dedicated to detect skylight polarization. These eyes are equipped with a tapetum that strongly plane-
Labhart, Thomas, Mueller, Kaspar
core  

The all‐day pollinator visits of sunflower inflorescences in Helianthus annuus plantations are independent of head orientation: Testing a widespread hypothesis

open access: yesThe Plant Journal, Volume 120, Issue 4, Page 1563-1576, November 2024.
Significance Statement We found that the all‐day number of pollinators (predominantly bees) attracted to model and real sunflowers in Helianthus annuus plantations is independent of the azimuth direction of sunflower heads. After 10 h in the morning, the average number of pollinators counted every 20 min is practically constant for the rest of the day.
Gábor Horváth   +6 more
wiley   +1 more source

A review on the current status of dye‐sensitized solar cells: Toward sustainable energy

open access: yesEnergy Science &Engineering, Volume 12, Issue 8, Page 3188-3226, August 2024.
The main components of dye‐sensitized solar cells. Abstract Dye‐sensitized solar cells (DSSCs) are among the most attractive third‐generation photovoltaic technologies due to their low toxicity, versatility, roll‐to‐roll compatibility, ultralightness, and attractive power conversion efficiencies (PCEs).
Benjamin K. Korir   +2 more
wiley   +1 more source

A conceptual framework on the role of magnetic cues in songbird migration ecology

open access: yesBiological Reviews, Volume 99, Issue 4, Page 1576-1593, August 2024.
ABSTRACT Migrating animals perform astonishing seasonal movements by orienting and navigating over thousands of kilometres with great precision. Many migratory species use cues from the sun, stars, landmarks, olfaction and the Earth's magnetic field for this task. Among vertebrates, songbirds are the most studied taxon in magnetic‐cue‐related research.
Thiemo Karwinkel   +5 more
wiley   +1 more source

Optimizing the use of a sensor resource for opponent polarization coding [PDF]

open access: yes, 2017
Flies use specialized photoreceptors R7 and R8 in the dorsal rim area (DRA) to detect skylight polarization. R7 and R8 form a tiered waveguide (central rhabdomere pair, CRP) with R7 on top, filtering light delivered to R8.
Heras, FJH, Laughlin, SB
core   +3 more sources

MoonShine: A software‐hardware system for simulating moonlight ground illuminance and re‐creating artificial moonlight cycles in a laboratory environment

open access: yesMethods in Ecology and Evolution, Volume 15, Issue 4, Page 701-715, April 2024.
Abstract Moonlight exerts profound ecological, behavioural and physiological effects on animals. However, lunar cycles are characterised by complex changes in the illuminance and timing of illumination, making it challenging to re‐create and manipulate moonlight cycles in the laboratory using artificial lights.
Lok Poon   +2 more
wiley   +1 more source

NIR‐emitting Electrochromic Windows for Cold Climate Region Buildings

open access: yesChemElectroChem, Volume 11, Issue 3, February 1, 2024.
Electrochromic windows: An electrochromic prototype incorporating a NIR‐emitting hybrid electrolyte doped with an erbium complex and an ionic liquid provided a dual modulation operation suitable certain windows of buildings (e. g., skylights, upper windows) located in cold climate regions.
Daniela Pinheiro   +9 more
wiley   +1 more source

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