Albedo formula_5 (also called blue-sky albedo) can then be given as: Directional-hemispherical reflectance is sometimes referred to as black-sky albedo and bi-hemispherical reflectance as white-sky albedo. These terms are important because they allow the albedo to be calculated for any given illumination conditions from a knowledge of the intrinsic properties of the surface. The albedos of planets, satellites and minor planets such as asteroids can be used to infer much about their properties. The study of albedos, their dependence on wavelength, lighting angle ("phase angle"), and variation in time comprises a major part of the astronomical field of photometry. For small
ALBEDO Telecom clocks to deliver SyncE and PTP timing services Design of acceptance & Inter connectivity Labs to execute interoperability test suites that will ensure the performance of telecom equipment based on xDSL, VoIP, IPTV, C-Ethernet, NG-SDH, EFM, and FTTH. Electronic instruments to measure voltage, current, resistance and isolation. Instruments may include TDR functionalities for massive cable testing. Salutions based on network probes to verify the quality of Ethernet / IP networks providing multimedia an critical data services. ALBEDO Telecom ALBEDO Telecom is a company that designs and manufactures products for the telecom industry including testers, synchronization nodes and networking devices. Typical