How much you need to eat: 1 or more servings a day. Dairy Products: Untreated Gravesâ disease can cause bone loss (which can lead to osteoporosis), but once Gravesâ disease is treated, you need calcium to rebuild those bones. Get plenty of calcium from dairy foods, such as cheese, milk, and yogurt.
Edison's  lamp became the first commercially successful incandescent lamp  (circa 1879). Edison received U.S. Patent 223,898 for his  incandescent lamp in 1880.    However, contrary to popular belief, Edison did not invent the  first lightbulb, he improved upon a 50-year-old idea. Canadians  Henry Woodward and Matthew Evans patented a light bulb in 1875, but  could not raise the financing to commercialize their invention.  Edison bought the rights to their patent.
Thomas Edison is revered as a great American inventor, and his incandescent bulb is considered one of the most important inventions of the modern world. But in The Age of Edison: Electric Light and the Invention of Modern America, Ernest Freeberg shows that the light bulb reflected the work of many inventors, rather than Edisonâs lone genius.