"AM" stands for amplitude modulation, which is a method of transmitting radio waves by varying the amplitude (strength) of the wave. This is different from FM (frequency modulation), where the frequency of the wave is varied.
1400 kHz (kilohertz) is the frequency of the radio wave being broadcasted by the AM station. It represents the number of waves (cycles) that pass through a point in one second. A higher frequency means more waves passing through in a given time, resulting in a higher pitch or more energy.
The range of an AM station's radio wave depends on several factors such as the power of the transmitter, the height of the antenna, and the terrain of the area. Generally, AM waves can travel up to a few hundred miles during the day and even further at night due to atmospheric changes. However, buildings and other obstructions can also affect the range of the wave.
The quality of an AM station's broadcast is determined by the strength and clarity of the radio wave received by the listener's radio. Factors such as distance, interference from other stations, and atmospheric conditions can affect the quality of the broadcast.
No, AM radio waves are not harmful to humans. They fall under the category of non-ionizing radiation, which means they do not have enough energy to ionize atoms and cause harm to living organisms. AM radio waves have been used for decades without any evidence of negative health effects on humans.