The Encyclopedia Americana, Količina 17Grolier Incorporated, 1996 |
Iz vsebine knjige
Zadetki 1–3 od 86
Stran 442
... surface separating it from a different medium , some of the light will be returned backward into the first medium ... surface is simply related to the incident direction . If the surface is a plane , and the incident direction makes some ...
... surface separating it from a different medium , some of the light will be returned backward into the first medium ... surface is simply related to the incident direction . If the surface is a plane , and the incident direction makes some ...
Stran 456
... surface varies inversely with the square of the distance from a constant - intensity point source when the surface is perpendicular to the direction of the incident light . Illumination = 1 footcandle 1 - candela point source 1 foot ...
... surface varies inversely with the square of the distance from a constant - intensity point source when the surface is perpendicular to the direction of the incident light . Illumination = 1 footcandle 1 - candela point source 1 foot ...
Stran 457
... surface remains constant . LIGHT , ELECTRIC - LIGHTFOOT AUTOMATIC SYSTEM , SIMPLE MOVIE. 000 457 Illumination = 1 ... surface - the surface to be measured - is compared with the brightness of a similar surface illuminated by a standard ...
... surface remains constant . LIGHT , ELECTRIC - LIGHTFOOT AUTOMATIC SYSTEM , SIMPLE MOVIE. 000 457 Illumination = 1 ... surface - the surface to be measured - is compared with the brightness of a similar surface illuminated by a standard ...
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20th century academic libraries acid Africa American Argentina army became began Bibliography Bolivia born brary Brazil British cataloging cells central Chile church collections College Colombia colonial common countries court cultural D. H. Lawrence died early economic elected established Europe European example federal footcandles force France French German important industrial known land later Latin America Latvia Lawrence lead learning leather Lebanon legislative legumes Leibniz lens Lesotho Lewis liability liberal Liberia librarians Libya lichens light lime major materials ment meters Mexico miles military modern national library North organization Paris party person Peru plants political population produced programs public libraries region River Roman served social South Spanish special libraries surface thallus theory tion United Univ University Uruguay Venezuela World World War II