1 Hypothyroiditis can occur if the thyroid gland does not function correctly, or if it is not stimulated properly. 2  The most common cause of hypothyroidism in the US is Hashimoto's disease. 3  Symptoms of hypothyroidism include fatigue, cold intolerance and joint and muscle pain.ypothyroidism is a condition that occurs when the thyroid gland does not produce enough thyroid hormones to meet the needs of the body. The thyroid creates two thyroid hormones, triiodothyronine (T3) and thyroxine (T4) that regulate metabolism. They also affect the following: 1.
Other Attempts in Modifying the System. With Peter Goldmark leading the group of CBS researchers, Goldmark invented a particular mechanical color TV system in 1940. This system was actually based on John Logie Bairdâs designs in 1928. But this didnât last long in the market.
RCA owned the NBC TV network when color television was in its infancy. With many color TV sets ready to sell, RCA made NBC the first network leader in number of hours of color programming. In August 1954, New York residents -- if they had a color television -- could see only one color show, Arland said.During 1956, there were 486 hours of color programs, and by 1964 all three broadcast networks had a lot of shows in color, Magoun said. NBC was first to air all new programs in color.n August 1954, New York residents -- if they had a color television -- could see only one color show, Arland said. During 1956, there were 486 hours of color programs, and by 1964 all three broadcast networks had a lot of shows in color, Magoun said. NBC was first to air all new programs in color.