Why does the prof claim that a 65 kHz radio transmission has a wavelength of less than an inch? The 65 kHz frequency wavelength is over 4,612 meters or about 2.8 miles. Do they not teach students to question statements that are obviously in error? Maybe his demo worked, but his introductory speech of linking how it works to a very short wavelength lacks credibility. It would have been interesting if he would have stated the signal strength being used. High power AM radio waves have been heard though fence wire and building I-Beams. I would not want to be that close to the transmitter/antenna though.
Why does the prof claim that a 65 kHz radio transmission has a wavelength of less than an inch? The 65 kHz frequency wavelength is over 4,612 meters or about 2.8 miles. Do they not teach students to question statements that are obviously in error? Maybe his demo worked, but his introductory speech of linking how it works to a very short wavelength lacks credibility. It would have been interesting if he would have stated the signal strength being used. High power AM radio waves have been heard though fence wire and building I-Beams. I would not want to be that close to the transmitter/antenna though.
Thanks, yes acoustic versus magnetic. I did not hear him say this.