Null result Guide, Meaning , Facts, Information and Description
Generally, a null result is a result which is null (that is, nothing). In science, it can be an experimental outcome that does not show an effect which is otherwise expected.
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In statistics, specifically, a null result occurs when there are non-significant differences between experimental and control conditions. While some differences may in fact be observed, they are below the threshold set prior to testing. The cutoff for these significance values varies, but is often .05. This is considered evidence for the null hypothesis.
In computer science and Information technology, null (e.g.
In physics, the results of the Michelson-Morley experiment, which did not detect the aether, was of this type. This experiment's famous failed detection, commonly referred to as the null result, caused the aether theory to be abandoned. Albert Einstein's theory of relativity followed close upon this null result. This theory does not make use of the aether concept.
In logic, null result is an invalid value of a proposition. It is one of the possibilities in a three-valued logic (true, false, or null result).Statistics
Computer science
NULL or nil) is a special value used in several languages to represent an address (pointer) not referring to any valid memory location. Also, sometimes, a special value that represents an unknown, missing, inapplicable, or undefined value. Nulls are treated differently depending on the language or program.Physics
Logic