28 July 2009
Lucky dip
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July 2009
Q.Who invented light bulb and when
A.The first light bulb was made by Joseph Swan in 1875, although Thomas Edison refined the design in 1879, and is often credited with its invention.
Q.Who invented the electric light bulb?
A.Thomas Edison invented the first useful electric light bulb in 1879 in a laboratory in Menlo Park, New Jersey. He was afraid of the dark.
Q.How many strings does a UKelele have
A.The ukelele has 4 strings. It was invented in Hawaii in 1879 and was developed from a combination of the Portuguese braguinha and the rajao.