C001/6492 Rights Managed
Credit: GIPHOTOSTOCK/SCIENCE PHOTO LIBRARY
Caption: VISA dove hologram reflects different colors. The VISA dove shown here is an embossed hologram that is mass produced at low cost. An embossed hologram is a microscopic surface relief pattern. Optically, it is essentially a reflective diffraction grating. Since the diffraction angle is wavelength-dependent, the hologram seems to shift its colors when illuminated by white light and observed from different angles.
Release details: Model release not required. Property release not required.
Keywords: authentic, authentication, bird, card, close up, close-up, closeup, credit, diffract, diffraction, dove, effect, hologram, holograph, holographic, holography, light, logo, optical, optics, phenomenon, physics, protect, protection, science, scientific, secure, security, symbol, visa
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