Before any method is selected to reinforce an adobe structure, the potential dangers of natural hazards should be evaluated. Department of Commerce Podcasts The Naked Scientists eLife Naked Genetics Naked Astronomy In short Naked Neuroscience. Smaller objects, foliage, and edges will cause the signal to diffract or scatter and hence cause rapid variations in the received signal strength. Building Penetration Loss -2 SOURCE: Bamboo has also been used to reinforce adobe structures .
How do radio waves penetrate brick walls? | Naked Science Forum
Thanks for those informations. Gamma rays penetrate material because their very high energy and short wavelength allows them to pass through the electron cloud of atoms with minimal disturbance other than throwing the occasional electron out of an atom ionising. Thay are able to penetrate concrete upto a metre in depth. Besides, lowering the bitrate should not be an issue when monitoring a house:
Right Martin, I was confused with the other Martin. Using a proprietory aerial would ensure that the effective length is correct, although there is still the difficulty of making low-loss connections at the RF chip and bulkhead, as has been well discussed. What kind of range can you expect? I can listen to the radio in a room with no windows, but just solid walls.
Clarke ; Peter J. The result showed that there is an average of 2dB difference between the measured and calculated path loss in free space and about 12dB in the presence of obstructed medium concrete wall. Tracking is carried out by means of a two steps algorithm. Just like the rest of the garbage mentioned in this page. Appears to be some technical comparison table?? The mathematical expression and their ranges of applicability are , ,  and : Notice all those multi rotor copters can perform all those impossible feats that would easily be attributed to flying saucers.