Essay specific features
October 3, 2011
No of pages / words:
8 / 2227
Rating of current essay:
Watson transmitted human conversation over a functional telephone system.
1888 ?V Heinrich Hertz radiated electromagnetic energy from a machine he called oscillator.
1894 ?V Guglielmo Marconi was the first to accomplish wireless transmission.
1908 ?V Lee DeForest invented the triode vacuum tube.
1933 ?V Major Howard Armstrong invented frequency modulation...
displayed 300 characters
Order custom writing paper now!
- Your research paper is written
by certified writers
- Your requirements and targets are
- You are able to control the progress
of your writing assignment
- You get a chance to become an
Get a price guote
The international unit of measurement of frequency is hertz, abbreviated Hz. The English unit is cycles per second, abbreviated cps (1 Hz = 1 cps). It is rarely used.
To simplify terminology, 1000 Hz is called kilohertz, abbreviated kHz, and 1000000 Hz is called a megahertz, abbreviated MHz.
The vibration rate of sound waves in air may also use the term frequency...
displayed next 300 characters
General issues of this essay:
2 pages, 468 words
2 pages, 518 words
2 pages, 370 words
1 pages, 278 words
2 pages, 302 words
2 pages, 469 words
2 pages, 411 words