Winds NNE at 9 mph (14.5 kph). The overnight low will be 41 Â°F (5.0 Â°C).Cloudy with a high of 62 Â°F (16.7 Â°C). Winds variable at 9 to 11 mph (14.5 to 17.7 kph). 50%58Â°47Â°Rain today with a high of 58 Â°F (14.4 Â°C) and a low of 47 Â°F (8.3 Â°C). There is a 50% chance of precipitation.
The amount of filtration of the x-ray beam is specified by and based on the voltage potential (keV) used to produce the beam. The thickness of filter materials is dependent on atomic numbers, kilovoltage settings, and the desired filtration factor.
Other uses of X-rays. Before the use of gamma rays [gamma ray: A type of ionising radiation that consists of a high-energy electromagnetic wave.] , a high-energy, concentrated dose of X-rays was used to treat some cancers. X-rays are still used to identify tumours [tumour: An abnormal growth of cells, often caused by cancer.] . X-rays are also used in CAT scans.