natural surface of ground
1Ground plane — In electrical engineering, a ground plane is an electrically conductive surface. Radio antenna theory In telecommunication, a ground plane structure or relationship exists between the antenna and another object, where the only structure of the… …
2Natural organic matter — (NOM) is broken down organic matter that comes from plants and animals in the environment. [ Natural Organic Matter, GreenFacts, 22 Apr, 2007 …
3Natural gas storage — Natural gas, like many other commodities, can be stored for an indefinite period of time in natural gas storage facilities for later consumption. Contents 1 Usage 2 Measures and definitions 3 Types 3.1 …
4Natural Bridge Caverns — Location Comal County, Texas, U.S …
5Natural Steps, Arkansas — Natural Steps   Census designated place   …
6Natural afro-hair — Natural hair, black hair, and afro textured hair are terms used to refer to the texture of Black peopleNative Africans hair that has not been altered chemically (by perming, relaxing, straightening, bleaching or coloring). Not all people of… …
7Natural History of an Alien — Format Speculative fiction/Sci Fi Starring Various astronomers and scientists Country of origin …
8Natural gas — For other uses, see Natural gas (disambiguation). Natural gas extraction by countries in cubic meters per year. Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons[1] …
9Natural scientific research in Canada — This article outlines the history of natural scientific research in Canada, including mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …
10Surface wave — Diving grebe creates surface waves In physics, a surface wave is a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities. A surface wave can also be an electromagnetic wave guided …
