Results for category "Holography"


Holography is a skill which enables three-dimensional images to be made. Holography uses a laser, interference, diffraction, light-intensity recording and suitable illumination of the recording. Holography helps change the image and also its viewing to an extent where it feels as if the object were still present, thus making the image appear three-dimensional. Holography includes amplitude and phase modulation holograms, thin holograms and thick (volume) holograms and transmission and reflection holograms. Holography is available everywhere, commonly featured on currency, credit cards and documents as a security measure against counterfeiting. Holography carries more visual appeal. Books and magazines use it as holographic covers. Holograms can be of great help in analysis of an object for miscellaneous purposes, even in medical technologies, such as MRIs and ultrasounds.