Sentence examples for frequency brightness from inspiring English sources
Factors that affect high frequency brightness temperature (TB), such as surface slope, solar albedo and dielectric constant, are analyzed first using a revised Racca's temperature model.
The prevailing Feature Integration Theory by Anne Treisman [5] states that perception picks up objects in a two-step process where a first, fast, unattended, automatic, and parallel process codes a number of separable dimensions of the visual scene such as color, orientation, spatial frequency, brightness and direction of movement.
The occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent.
Splat takes the data from the sound-level meter and arranges it on a spectrogram: a blue field of time on which sounds appear as orange shapes, their height representing their frequency, their brightness showing loudness, their length duration.
Simultaneous satellite measurements of mesospheric temperature and humidity and the NLC occurrence frequency and brightness estimates from ground-based observations give an opportunity to study the NLC sensitivity to temperature and humidity of the summer mesopause.
There is an intense ongoing effort on studies of long-term trends in occurrence frequency and brightness of mesospheric clouds, termed noctilucent clouds (NLCs) as observed from the ground and polar mesospheric clouds (PMCs) as observed from the space, in connection to global climate change and related changes of upper atmosphere environment, in particular (Thomas 2003).
There is also an anticorrelation of PMC occurrence frequency and brightness with solar activity, which is to be expected since the clouds are composed of H2O ice.
A number of studies have recently investigated the spatial frequency tuning of brightness perception by a psychophysical masking/filtering paradigm, where the spatial frequency content of the stimulus is manipulated either by filtering the stimulus [19] or by masking it with filtered visual noise [10], [20].
The tuning of the classification image profiles are consistent with the idea that low- and medium spatial frequencies are used for brightness perception [10], [19], [20] and the low-frequency cut-off might be around 1cpd [1cpd
We give the power law indices for the frequency distribution of peak brightness temperature which is 1.87 ± 0.05 for 17 GHz observation and is 1.64 ± 0.04 for 34 GHz observation.
