An experiment/measurement is said to produce a null result if it supports the null hypothesis, typically in that the result has low statistical significance.
Historically important null results in physics:
Michelson-Morley experiment led to development of special relativity, thus of general relativity and the modern theory of gravity.
absence of the ultraviolet catastrophe predicted by $H_0 =$ classical electromagnetism] led to the hypothesis of energy/frequency-quantization (now expressed by Planck's constant) and hence to the development of quantum physics
See also
Last revised on January 26, 2019 at 07:22:02. See the history of this page for a list of all contributions to it.