Skywave modes of radio communication operate by bending ( refracting ) radio waves ( electromagnetic radiation ) through the Ionosphere . During the "peaks" of the solar cycle, the ionosphere becomes increasingly ionized by solar photons and cosmic rays . This affects the propagation of the radio wave in complex ways that can either facilitate or hinder communications. Forecasting of skywave modes is of considerable interest to commercial marine and aircraft communications , amateur radio operators and shortwave broadcasters . These users occupy frequencies within the High Frequency or 'HF' radio spectrum that are most affected by these solar and ionospheric variances. Changes in solar output affect the maximum usable frequency , a limit on the highest frequency usable for communications.
Getting pregnant can be such a mystery! You OB/GYN may have noted if your uterus is in a retroverted or tipped position – you could ask her. There is information out there that suggests that this is a variation of normal and will not affect your chances of conceiving, but also information about how having an aligned uterus is ideal/has helped some women. Since it seems you are having trouble conceiving, you might want to check out Mayan Abdominal Massage – The Avrigo technique – if you are concerned about abnormal positioning. Or perhaps there are holistic practitioners, like acupuncturists, naturopaths, or holistic endocrinologists near you who can help you out.