The objective of descriptive and explanatory research is provide  information why certain things are done in a specific way. The  other purpose is to provide information. Edit. Share to: 1  Catch Recruiters' Eyes with Focused Job Objectives A key component of the resume is the objective.
EnchantedLearning.com The Invention of the Light Bulb: Davy, Swan and Edison. Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly.ewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called Edison's Pioneers.. In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.
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.