| 摘要 |
<p>PURPOSE:To make the surface of water cloudy and to obtain a screen surface for projection by installing a pressurized water supplying mechanism jetting water from nozzles set under the water surface toward the water surface. CONSTITUTION:Water sucked from a reservoir 8 through a suction pipe 18 is supplied under pressure to a water pipe 13 with a pump 17 and jetted from the nozzle hole of each nozzle 9 toward the surface 4 of water through a distribution pipe 11. As a result, the water surface 4 is made finely cloudy all over to form a screen for projection. The water level is kept almost constant through a drainpipe 5, an overflow pipe 6 and a return pipe 7.</p> |
