On the other hand, unlike guided channels such as wire or optical fibre, the medium through which radio waves propagate is highly variable, being subject to diurnal, annual, and solar changes in the ionosphere, variations in the density of water droplets in the troposphere, varying moisture gradients, and diverse sources of reflection and diffraction.
The influence on the antenna pattern in elevation is expected to be minimal, as there are no major sources of reflection outside the 60° half-power opening angle.
"With parallax mapping, thick vegetation, multiple coloured light sources, refraction and reflection, as well as beautiful, highly-detailed tools; I find the phrase 'as closely as possible' extremely hard to swallow".
Excessive, poorly designed outdoor lighting wastes electricity, imperils human health and safety, disturbs natural habitats, and, increasingly, deprives many of us of a direct relationship with the nighttime sky, which throughout human history has been a powerful source of reflection, inspiration, discovery, and plain old jaw-dropping wonder.
Circulators are used in high power microwave systems to protect the vacuum source against reflection.
Under ideal conditions, an elliptical reflector can gather NIR heat flux from an NIR heat source by reflection to a focus point.
The lighting model with the aforementioned assumptions can be generalized to incorporate multiple light sources, specular reflections, etc. using Eq. 8; if light sources and material properties are available.
Secondly, some large travel-time residuals of ~ 60 s could, in fact, indicate a seismic phase miss-interpretation when, for example, a near-source surface reflection (pP or sP) is erroneously interpreted as the direct P arrival or when a PKPab arrival is miss-interpreted as either the PKPbc or PKPdf.
If the bullies used their scripture as a source of reflection instead of as a weapon against others, they would realize that Jesus would be horrified at what they do in His name.
Find any source of reflection so you can see what is behind you without being suspicious.
