Results 11 to 20 of about 2,016,170 (332)

Are numbers, size and brightness equally efficient in orienting visual attention? Evidence from an eye-tracking study. [PDF]

open access: yesPLoS ONE, 2014
A number of studies have shown strong relations between numbers and oriented spatial codes. For example, perceiving numbers causes spatial shifts of attention depending upon numbers' magnitude, in a way suggestive of a spatially oriented, mental ...
Hermann Bulf   +2 more
doaj   +2 more sources

Current Status of the Liquid-Metal-Jet X-ray Source Technology [PDF]

open access: yesStructural Dynamics
High-end x-ray diffraction and scattering techniques such as high-resolution XRD, protein crystallography, and SAXS rely heavily on the x-ray source brightness for resolution and exposure time.
Camilla Storaa   +3 more
doaj   +2 more sources

Plasma-wakefield accelerator simultaneously boosts electron beam energy and brightness [PDF]

open access: yesNature Communications
High-energy particle colliders and X-ray free-electron lasers demand electron beams with qualities currently achieved only in kilometer-scale radio-frequency accelerators.
Chaojie Zhang   +21 more
doaj   +2 more sources

Cross-modal commutativity of magnitude productions of loudness and brightness [PDF]

open access: yesAttention, Perception, & Psychophysics, 2021
AbstractIn their fundamental paper, Luce, Steingrimsson, and Narens (2010, Psychological Review, 117, 1247-1258) proposed that ratio productions constituting a generalization of cross-modality matching may be represented on a single scale of subjective intensity, if they meet “cross-dimensional commutativity.” The present experiment is the first to ...
Wolfgang Ellermeier   +2 more
openaire   +3 more sources

Darkening Low-Earth Orbit Satellite Constellations: A Review

open access: yesIEEE Access, 2022
The proliferation of low-earth orbit (LEO) satellites and the LEO satellite internet will be a game-changer for the low-latency high-speed global internet.
Ali Lalbakhsh   +5 more
doaj   +1 more source

Isolation of brightness induction effects on target patches from adjacent surrounds and remote backgrounds

open access: yesFrontiers in Human Neuroscience, 2023
The brightness (perceived intensity) of a region of visual space depends on its luminance and on the luminance of nearby regions. This phenomenon is called brightness induction and includes both brightness contrast and assimilation.
Barbara Blakeslee, Mark E. McCourt
doaj   +1 more source

Sky twilight brightness at zenith expressed in magnitudes [PDF]

open access: yesNRIAG Journal of Astronomy and Geophysics, 2020
Most of the previously published results of the zenith sky twilight brightness, obtained by different investigators, are given in different units.
S. Nawar   +4 more
openaire   +1 more source

The high optical brightness of the BlueWalker 3 satellite

open access: yesNature, 2023
Large constellations of bright artificial satellites in low Earth orbit pose significant challenges to ground-based astronomy^ 1 . Current orbiting constellation satellites have brightnesses between apparent magnitudes 4 and 6, whereas in the near ...
S. Nandakumar   +39 more
semanticscholar   +1 more source

Magnitude Estimates for the Carrington Flare in 1859 September: As Seen from the Original Records

open access: yesAstrophysical Journal Letters, 2023
The Carrington flare in 1859 September is a benchmark, as the earliest reported solar flare and as an event with one of the greatest terrestrial impacts.
H. Hayakawa   +6 more
semanticscholar   +1 more source

Theoretical formulation and experimental validation of brightness evaluation using digital cameras

open access: yesResults in Optics, 2021
In this study, we formulated the brightness relation of two digital photos captured by a single digital camera and verified it experimentally. The experimental results suggested that the used zoom lens has an intrinsic error, thereby making accurate ...
Nobuaki Shimoji, Musashi Okizaki
doaj   +1 more source

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