The formula for the frequency of a wave in a vacuum is almost identical to that of a wave not in a vacuum. Since there are no outside influences on the velocity of the wave, though, you would use the mathematical constant for the speed of light, which electromagnetic waves would travel at under these conditions.
David Faustino net worth: $5 Million. David Faustino Net Worth: David Faustino is an American actor who has a net worth of $5 million dollars. Born in Los Angeles, California, in 1974, David Faustino began acting as an infant, appearing on the Lily Tomlin Special when he was three months old. In 1980, he scored a part on Little House on the Prairie, and began acting more consistently throughout the decade.
About David Cassidy. David Bruce Cassidy, with a net worth of $500 thousand, is an American actor, song guitarist, and also a singer. He has earned his wealth by acting in family television shows, series and films, and by performing in many concerts. Some of his concerts have been solo performances as well.