As Neils Bohr showed, it is possible for electrons to move between energy levels. Light contains energy. If a photon of light strikes an atom, it is possible for the energy in the light ray to be transferred to one of the low energy electrons moving around the atomic center.
Spotting before a period is due â reasons for spotting before a period can be implantation, from a cyst or a short luteal phase and impaired egg quality. Spotting in between cycles â this is a difficult term to answer but often means your cycles are growing shorter; often with perimenopause.
Spotting and Cramping After Period. While there are dozens of reasons why cramps are preset, spotting and cramping usually occurs for the following reasons: 1  Uterine Incapacity: A womanâs uterus is meant to expel all of the blood from a period by the time a womanâs period ends.