Remote sensing is the assessment of information about an object or phenomenon without any physical contact with the particular object and thus in contrast to in situ observation. Remote sensing generally refers to the use of aerial sensor technologies to detect and classify objects on Earth by means of propagated signals. Remote sensing is of two types they are active and passive. Active remote sensing means when a signal is first emitted from aircraft or satellites and passive means when information is recorded.
Scientific journal is a periodical publication intended to further progress of science, usually by reporting novel research. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals publish articles and scientific papers across a wide range of scientific fields. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.
Last date updated on June, 2014