1 The material is another important basis for computation of cost. 2  The material is usually computed by yard. 3  A couch on average uses from 18 to 22 yards of fabric. 4  Some fabrics cost as low as $15 per yard to as high as $180 for fabrics made of silk and wools. A couch on average uses from 18 to 22 yards of fabric. 2  Some fabrics cost as low as $15 per yard to as high as $180 for fabrics made of silk and wools. 3  Labor charges vary according to location and if the person doing it is a novice or professional for the job.
The major energy loss of high-energy (relativistic) electrons (energy greater than about 10 MeV, depending somewhat upon material) occurs from the emission of bremsstrahlung, and this is the major source of gamma rays in a high-energy cosmic-ray shower. See Electromagnetic radiation.
Beta decay occurs when the nucleus emits an electron or positron and a neutrino, in a process that changes a proton to a neutron or the other way about. The nucleus may capture an orbiting electron, causing a proton to convert into a neutron in a process called electron capture.y contrast, there are radioactive decay processes that do not result in a nuclear transmutation. The energy of an excited nucleus may be emitted as a gamma ray in a process called gamma decay, or be used to eject an orbital electron by its interaction with the excited nucleus, in a process called internal conversion.