By: Luis Alcantar Period 3
Radio wave Description
- Radio waves are electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
- They have frequencies from 3 THz to as low as 3 kHz, and corresponding wavelengths ranging from 100 micrometers 0.0039 in to 100 kilometers 62 mi.
- They have a velocity of 299,775 km/s in a vacuum same velocity of light.
Facts about radio waves
- Radio waves have a smaller frequency and larger wavelength.
- Radio waves are actually electromagnetic waves that are created when a magnetic field is joined with an electric field.
Two applications about this wave are to communicate from one place to the other and are used to transmit the pattern of a heartbeat through a monitor at a patient's home to a nearby hospital.
Health impacts: positive/negatives
- Radio waves directly impair the immune system by sensing the bone marrow.
- Radio waves cause cancer
- Radio waves cause leukaemia and other disorders.
Description of video:
The video is informing how radio waves were used back in the old days named RF. It's informing what radio waves are and how they are transformed by electrode waves and how they work. Also radio waves have the same speed as light. It also showed the equation of radio wave can be determined by the speed of light divided by the frequency. Also shows how Antennas absorb radio waves and must get a good match to allow the radio wave to pass. Radio waves pass through air but not concrete. Rain can absorb RF because they low frequencies rates. The Ionosphere helps radio waves from getting from a antenna to another antenna far far away by the solar winds. Also the atmosphere can shift Polarity.