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.
Incandescent light bulb longevity and how to make it last longer. General Electric Company was the first to patent a method of making tungsten filaments for use in incandescent light bulbs back in 1906, and the method hasnât changed a great deal during that time.