Also, when you “keep your fingers crossed,” you are wishing for good luck. If you hide your hand out of sight, down by your leg or behind your back, though, it means you are telling a deliberate lie. By crossing your fingers in this way, you are hoping somehow to be excused or to escape punishment for lying.
Note on the left that when the carrier wave of FM radio is modulated with sound that the distance between the waves, or the frequency of the carrier wave, changes. Thus, AM radio works by changing the amplitude of the carrier wave and FM radio works by changing the frequency of the carrier wave. Frequency Response.
Tennis bracelets got their unusual name from an incident involving Chris Evert during a US Open match in 1987. Chris had been wearing an expensive bracelet featuring an inline string of individually-set diamonds. When the clasp snapped, she asked the officials to stop the match until the jewelry could be found.