18 to 19 century was known as Inventory Era so many modern machine were invented in that time. Prominent Scientists were born to change society.
They worked day and night heartily to make their dreams true we can see aeroplane, Bulb, Gramophone, Radio these all were possible because of countless efforts of scientists
But today no one want to put efforts all of us want to prepared knowledge we search every single things in Google. We rely on it completely because we became googoloholic!