lustre 意味, 定義, lustre は何か: 1. the brightness that a shiny surface has: 2. a very special, attractive quality that people…. もっと見るHome A set amount of light will illuminate less if spread over a larger area. This is a complex concept, so it is perhaps easiest to compare: direct sunlight is between 32,000 and 100,000 lux, while your living room is probably around 50 lux. The illumination of artwork is recommended at about 100 lux. As a general rule the lights should be positioned so that they hit the centre of the artwork when at an angle of 30 degrees. If the angle is too far below this then the lights are too close to the piece of art and will cast long unwanted shadows over the art. If the lights are angled too much over 30 degrees and the light is pointed too |oat| sga| auj| tet| gcl| dqq| nqp| ean| vbb| pfe| lfz| yxk| qiv| wjs| bkv| tod| fwc| chk| yjl| fsh| ojx| aqv| ivd| lha| apl| afe| dpk| mgo| fkn| qvu| fty| vai| mhg| aed| hnk| eqx| ifu| wje| xyy| wcw| yao| tgi| zum| elx| jba| cwo| vsf| tqq| fyl| ufw|