the ratio of one parameter, such as power of a wanted signal to the same parameter of the noise at a specified point in an electronic circuit, etc
1. (SNR, “s/n ratio”, “s:n ratio”) “Signal” refers to useful information conveyed by some communications medium, and “noise” to anything else on that medium. The ratio of these is usually expressed logarithmically, in decibels.
2. The term is often applied to Usenet newsgroups though figures are never given. Here it is quite common to have more noise (inappropriate postings which contribute nothing) than signal (relevant, useful or interesting postings). The signal gets lost in the noise when it becomes too much effort to try to find interesting articles among all the crud. Posting “noise” is probably the worst breach of netiquette and is a waste of bandwidth.
- Effective osmotic pressure
effective osmotic pressure n. The part of the total osmotic pressure of a solution that governs the tendency of its solvent to pass across a boundary, usually a semipermeable membrane.
- Effective renal blood flow
effective renal blood flow n. Abbr. ERBF The amount of blood flowing to the parts of the kidney that produce urine.
- Effective renal plasma flow
effective renal plasma flow n. Abbr. ERPF The amount of plasma flowing to the parts of the kidney that function in the production of urine.
noun, Electricity. 1. the resistance to an alternating current, expressed as the ratio of the power dissipated to the square of the effective current.