trezor.io
Rate this file (Rating : 5 / 5 with 1 votes)
young brunette girl in a green reflection
trezor.io

Young Brunette Girl In A Green Reflection

• Sound reflection
When a longitudinal sound wave strikes a flat surface, sound is reflected in a coherent manner provided that the dimension of the reflective surface is large compared to the wavelength of the sound. Note that audible sound has a very wide frequency range (from 20 to about 17000 Hz), and thus a very wide range of wavelengths (from about 20 mm to 17 m). As a result, the overall nature of the reflection varies according to the texture and structure of the surface. For example, porous materials will absorb some energy, and rough materials (where rough is relative to the wavelength) tend to reflect in many directions—to scatter the energy, rather than to reflect it coherently. This leads into the field of architectural acoustics, because the nature of these reflections is critical to the auditory feel of a space. In the theory of exterior noise mitigation, reflective surface size mildly detracts from the concept of a noise barrier by reflecting some of the sound into the opposite direction.
• Seismic reflection
Seismic waves produced by earthquakes or other sources (such as explosions) may be reflected by layers within the Earth. Study of the deep reflections of waves generated by earthquakes has allowed seismologists to determine the layered structure of the Earth. Shallower reflections are used in reflection seismology to study the Earth's crust generally, and in particular to prospect for petroleum and natural gas deposits.

File information
Filename:291277.jpg
Album name:Babes
Rating (1 votes):55555
Keywords:#young #brunette #girl #green #reflection
Filesize:100 KiB
Date added:Jul 06, 2010
Dimensions:800 x 1206 pixels
Displayed:81 times
URL:displayimage.php?pid=291277
Favorites:Add to Favorites