Electromagnetic spectrum refers to the full range of all frequencies of electromagnetic radiation and also to the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. Devices used to measure an electromagnetic spectrum are called spectrograph or spectrometer.
Another way that alcohol affects the endocrine system is by interfering with how the body absorbs calcium, a chemical needed for strong bones. As a result, people who drink heavily may be at a higher risk for osteoporosis, a disease in which bone density declines.
Contraceptives can cause the endometrium to thin, sometimes resulting in amenorrhea; menses usually begin again about 3 mo after stopping oral contraceptives. Antidepressants and antipsychotics can elevate prolactin, which stimulates the breasts to produce milk and can cause amenorrhea.