ALL meanings of blue flash
blue flash
B b - noun blue flash green flash. 1
- noun blue flash (meteorology, astronomy) A very rare phenomenon observed in morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere. 0
- noun blue flash (nuclear physics) A phenomenon sometimes observed when a criticality incident occurs in nuclear materials, inducing a discharge of radiation into the environment. 0