Radiopacity: I Can See Clearly Now
Radiopacity (or radiodensity) is the ability of a material or device to block or obstruct the passage of electromagnetic photons, normally in the form of X-rays. On an photographic X-ray image, a material with more radiopacity than the background will appear brighter than the background due to the unexposed emulsion not developing on the image. […]
Rheometry Is More Than Just Viscosity
Rheometers are instruments that impose a highly controlled deformation to a fluid while measuring the force required to maintain that deformation (or vice versa). Viscosity, a parameter that indicates a fluid’s resistance to flow, is normally the main property that people think of when using a rheometer. However, rheometers can provide a great more information […]