親記事
引用 |
|
I stay at home and look after the children <a href=" http://www.trurodiocese.org.uk/price-of-nexium-otc.pdf#moderate ">nexium iv infusion</a> GPS satellites transmit radio waves towards Earthﾃ｢ﾂﾂ冱 surface, relaying information about the satelliteﾃ｢ﾂﾂ冱 position and the time that the message was sent. As with other forms of radiation, such as visible light, GPS radio waves can bounce off a surface. When the radio waves strike the surface of a body of water, approximately 60 percent of the signal is reflected towards the sky. However, wind blows over water, creating waves that vary in intensity with the speed of the wind. As the surface of the water becomes rougher, the reflected radio waves become more distorted and are scattered in various directions.
|