What is the plan?


Thomas Edison tested thousands of combinations of filament material and glass vacuum globes before successfully discovering the combination that led to the first practical electric lightbulb in 1879. Wilbur and Orville Wright painstakingly experimented with hundreds of glider flights before developing their three-axis control system that allowed them to be credited with inventing and flying the world’s first successful airplane in 1903.…

Source:: What is the plan?


August 9, 2017

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