The Treaty of Saragossa did not modify or clarify the line of demarcation in the Treaty of Tordesillas, nor did it validate Spain's claim to equal hemispheres (180Â° each), so the two lines divided the Earth into unequal hemispheres. Portugal's portion was roughly 191Â° whereas Spain's portion was roughly 169Â°.
Transcript of The Hair Straightener: Past and Present. The Hair Straightener: Past and Present By Josephine and TaMuriel The hair straightening model that we use today was invented in 1912 by Lady Jennifer Bell Schofield, although a tool for shaping hair, called a pressing comb, was invented in 1872.
Although Archimedes is credited with inventing the screw in the 3rd century bc, his screw was not todayâs fastener but actually two other screw-type devices. One was a kind of water pump; still used today for large-volume, low-lift, industrial applications, the device is now called the inclined screw conveyor.