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.
It is misleading to say that Edison invented the light bulb on October 21, 1879 because the light bulb was not his own original idea and because he did not simply come up with it on that day. The idea of the light bulb had been around for a long time before 1879.homas Edison invented the light bulb in 1879. Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow longer. Yojana_Thapa | Student, Grade 10 | TA | (Level 1) Valedictorian.