Results 31 to 40 of about 641,900 (344)
Lightness and brightness [PDF]
Current Biology, 2007 What is lightness? Lightness is the perceptual dimension that runs from black, through gray, to white. The physical counterpart of lightness is the permanent property of a surface that determines what percentage of light the surface reflects. Surfaces that appear white reflect about 90% of the light striking them. Black surfaces reflect about 3%.
openaire +2 more sources
Measurement of night sky brightness in southern Australia
, 2011 Night sky brightness is a major source of noise both for Cherenkov telescopes as well as for wide-angle Cherenkov detectors. Therefore, it is important to know the level of night sky brightness at potential sites for future experiments.
Hampf, Daniel +5 more
core +1 more source
The Formation of Disk Galaxies [PDF]
, 1996 We present a scenario for the formation of disks which explains not only the properties of normal galaxies, but the properties of the population of low surface brightness galaxies (LSBs) as well.
Babul A. +36 more
core +3 more sources
Determining the relationship between cognitive performance and LED lamp color temperature and personality type in students [PDF]
International Journal of Industrial Engineering and Production Research, 2023 Background: The lighting of the work environment and its quantitative and qualitative characteristics, such as the intensity of the light and the color temperature, as a physical characteristic, have a great impact on the mental health, behavior and ...
hamed alizadeh +4 more
doaj
Characteristics of Photon Beam and Preservation of Coherence in Fourth-Generation Light Sources
Applied Sciences, 2021 Fourth-generation storage rings (4GSRs) that exploit the multi-bend achromat lattice concept may be able to surpass the brightness and coherence that are attained using the present third-generation storage rings.
Bonghoon Oh +4 more
doaj +1 more source
Direct magneto-optical compression of an effusive atomic beam for high-resolution focused ion beam application [PDF]
, 2017 An atomic rubidium beam formed in a 70 mm long two-dimensional magneto-optical trap (2D MOT), directly loaded from a collimated Knudsen source, is analyzed using laser-induced fluorescence.
de Raadt, T. C. H. +6 more
core +3 more sources
Journal of General and Family Medicine, 2018 The spine is homogeneously osteosclerotic and which appears to have no particular abnormal findings, however, that was proved to be a result of multiple metastases from prostate cancer. We should consider the possibility of prostate cancer if we see a "bright spine" on X-ray examination.
Ogushi, Akihiko +2 more
openaire +2 more sources
Properties of sunspots in cycle 23: I. Dependence of brightness on sunspot size and cycle phase [PDF]
, 2007 In this paper we investigate the dependence of umbral core brightness, as well as the mean umbral and penumbral brightness on the phase of the solar cycle and on the size of the sunspot.
Albregtsen +35 more
core +1 more source
Journal of Natural Fibers, 2022 The current study investigated the Ethiopian sugarcane bagasse during its delignification using the Kraft pulping process and bleaching by single stage hydrogen peroxide process.
Medhanit Mamaye +3 more
doaj +1 more source