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.
The soft tissue in your body is composed of smaller atoms, and so does not absorb X-ray photons particularly well. The calcium atoms that make up your bones are much larger, so they are better at absorbing X-ray photons. In the next section, we'll see how X-ray machines put this effect to work.-rays are basically the same thing as visible light rays. Both are wavelike forms of electromagnetic energy carried by particles called photons (see How Light Works for details).