The main components of high-voltage electric transmission lines and associated facilities include: Transmission towers are the most visible component of the power transmission system. Their function is to keep the high-voltage conductors (power lines) separated from their surroundings and from each other.
It is not surprising then that some of the symptoms of hyperthyroidism are nervousness, irritability, increased perspiration, heart racing, hand tremors, anxiety, difficulty sleeping, thinning of your skin, fine brittle hair and weakness in your musclesâespecially in the upper arms and thighs.
1 Eye problems. 2  In some people with an overactive thyroid gland, eye problems can occur and be quite severe. 3  The most common eye symptom is a retraction of the eyelids that makes the eyes appear to bulge or stare dramatically. 4  Your eyes may also be puffy and watery, and you may experience double vision.5  Hives. The shaking may be subtle, or it could be to the point where you can't steadily carry a drink without spilling it. 2  Diarrhea. 3  An overactive thyroid causes the digestive system to speed up, and this leads to frequent, loose bowel movements. 4  Eye problems.