Lucency is a technical term for an area that lets x-rays through tissue and appears darker on the picture. Peri-screw lucency is a result of having had a peri-screw insert â¦ ed into the bone, possibly due to an accident.1 person found this useful. They're is a contraction or shortening of 'they are'.   . Their means belonging to people or things previously mentioned or  easily identified (Your parents do not look similar, except for  their noses).
Amplified antennas are best for the suburbs and rural areas, where a TV signal has to travel a greater distance. They also tend to perform better in rainy or stormy conditions, which can also affect how well a signal travels.
A signal amplifier is used in cases where one of your broadcast towers is located at a significantly further distance than the others, or you are having trouble getting reliable reception from one or two channels due to foliage, a mountain range, or splitting signals inside the home between two or more television sets.