Results 221 to 230 of about 106,878 (287)

SOLAR AND SKY RADIATION MEASUREMENTS DURING SEPTEMBER, 1916

open access: hybrid, 1916
HERBERT H. KIMBALL
openalex   +1 more source

A long-term decline in downward surface solar radiation. [PDF]

open access: yesNatl Sci Rev
Song F   +9 more
europepmc   +1 more source

A Switchable and Rotatable Chiral Nematic Liquid Crystal Diffraction Grating for Beam‐Steering Technology

open access: yesAdvanced Optical Materials, EarlyView.
A switchable and rotatable chiral nematic liquid crystal diffraction grating is demonstrated, driven by low voltages at room temperature. Incorporation of the dimer CB7CB induces an asymmetric tilt via the flexoelectro‐optic effect, generating torque that enables uniform 360° in‐plane rotation of both the grating and its far‐field diffraction pattern ...
Qihao Han   +4 more
wiley   +1 more source

Spirit in the Sky

open access: yesJournal of Skyscape Archaeology, 2017
openaire   +2 more sources

Self‐Aligned Waveguide Array Integrated with Flat Microlenses for Environment‐Adaptive and High‐Resolution Compound Eye Vision

open access: yesAdvanced Optical Materials, EarlyView.
For an amphibious high‐resolution compound eye vision system, environment‐adaptive self‐aligned waveguides are integrated with high‐density flat microlenses. Fabrication, optical performance, and environmental adaptability are investigated, demonstrating stable focusing, efficient light collection, and enhanced spatial resolution.
Hyuk Jae Jang   +4 more
wiley   +1 more source

THE BLUE SKY AND THE OPTICAL PROPERTIES OF AIR

open access: hybrid, 1920
LORD RAJLEIGH
openalex   +1 more source

The Ellis-Baldwin test. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci
Secrest NJ.
europepmc   +1 more source

Mechanically Tunable Optical Response in Silicon Nanosphere Metasurface Fabricated via Bottom‐Up Process

open access: yesAdvanced Optical Materials, EarlyView.
A large area mechano‐tunable square lattice array of silicon nanospheres is fabricated by a bottom‐up process, and the capability to tune the lattice resonances by external strain is demonstrated. Spectrally overlapping the electric and magnetic dipole lattice resonances by mechanical strain induces the lattice Kerker effect and strongly suppresses the
Yongan Hu   +4 more
wiley   +1 more source

SOLAR AND SKY RADIATION MEASUREMENTS DURING OCTOBER, 1916

open access: hybrid, 1916
HERBERT H. KIMBALL
openalex   +1 more source

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