1. What frequency range in the electromagnetic spectrum does radio waves can be found? (3 pts.)
2. Hertz proved the existence of this waves from Maxwells' theories and its discovery helped communication to be more efficient. (3 pts.)
3. How did Albert Einstein resolve the conflict between the theories of Isaac Newton and James Clerk Maxwell? (4 pts.)
2. Hertz proved the existence of this waves from Maxwells' theories and its discovery helped communication to be more efficient. (3 pts.)
3. How did Albert Einstein resolve the conflict between the theories of Isaac Newton and James Clerk Maxwell? (4 pts.)
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1.) Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers). They also have the lowest frequencies, from about 3,000 cycles per second, or 3 kilohertz, up to about 300 billion hertz, or 300 gigahertz.
2.) Hertz proved the existence of radio waves in the late 1880s. He used two rods to serve as a receiver and a spark gap as the receiving antennae. Where the waves were picked up, a spark would jump. Hertz showed in his experiments that these signals possessed all of the properties of electromagnetic waves.
3.) Using mental images of clocks and trains, light beams and speeding bicycles, Einstein realized that Newton's system could not be right because it contradicted Maxwell's theory of light. Einstein showed that the speed of light must be constant, no matter how fast you move.