What Is the Coccyx?
What Is the Coccyx? The coccyx, commonly referred to as the tailbone, is the lower end of the spinal column of man and consists of four nodules of bone, like tiny...
Read MoreWhat Is the Coccyx? The coccyx, commonly referred to as the tailbone, is the lower end of the spinal column of man and consists of four nodules of bone, like tiny...
Read MoreWho Invented the Gramophone? Early attempts to design a music-playing gadget began in 1877 when Thomas Edison invented his tin-foil phonograph. The word ‘phonograph’...
Read MoreHow Are Phonograph Records Made? We know that a phonograph record’s sound is stored in the wavy grooves on its surface. In the recording studio, the music is...
Read MoreHow Does a Cylinder Lock and Key Work? A cylinder lock is made up of a revolving metal cylinder. Five small pins fall down into the cylinder when it is locked. There...
Read MoreWhy Do Dimes Have Ridges on Their Rims? You have probably noticed the ridges, or grooves, on the edges of such U.S. coins as dimes, quarters and half-dollars. At one...
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