He aided in the discovery of the cog and gear system, which later added into the creation of machinery in the Industrial revolution.
His flying machines gave a new perspective to engineering.
the Wicked Witch Of The West is the main antagonist of the (1939) Film The Wizard Of Oz (1939) The Wizard Of Oz Her Kansas alter ego counterpart is the mean spirited town Mayor named Almira Gultch who tries to put protagonist Character Dorothy Gale's pet dog named Toto down for attacking her when Dorothy and him were ...
The diaphragm is another term for the aperture, so it controls the amount of light passing into the film camera.
