Radio waves are able to wirelessly carry important information almost instantaneously and, aside from just transmitting audio and television signals, they make cell phones, global positioning systems and space communication possible. Radio wave technology has allowed for significantly faster and easier communication and navigation.Know More
Radio waves are electromagnetic radiation waves that have wavelengths that are longer than infrared light. Wavelengths of radio waves range from several millimeters long to many miles long. Because radio waves are a type of electromagnetic radiation, they travel and can carry information at the speed of light.
A simple radio uses an antenna and a tuner to pick up the correct radio waves. Different stations have different radio frequencies that they give off. The radio inside a stereo system or car picks up the radio wave by tuning the antenna to receive only the desired frequency. When the correct radio frequency is received, the radio converts the waves into sound using speakers.
Radio technology and research led the way for the invention of the cell phone, the GPS and many other communication devices. Cell phones and global positioning units send information to satellites using radio waves. The satellites either receive the waves and transmit new ones with the same information back to Earth, or they simply reflect the radio waves back onto the surface of the Earth.Learn more about Optics & Waves
Radio waves are used to transmit signals through the air, with the main benefit being that the only equipment necessary is a transmitter and receiver. There are no cables to string or holes to dig as the waves are simply transmitted from one place to another.Full Answer >
One of the disadvantages of radio waves is that they cannot transmit a lot of data simultaneously because they're low frequency. In addition, continued exposure to large amounts of radio waves can cause health disorders like leukemia and cancer. Despite these setbacks, technicians have effectively achieved enormous breakthroughs. For example, astronauts use radio waves to transmit information from space to Earth and vice versa.Full Answer >
The speed of radio waves is approximately 185 miles per second, which is also the speed of light. The reason that radio waves travel at the speed of light is that they are a type of electromagnetic radiation. Other forms of electromagnetic radiation are X-rays and light.Full Answer >
In large doses, radio waves, also known as radio frequencies, can disrupt biological functions and break down tissue. There is still much debate over whether or not the radio frequencies emitted from mobile communication devices and the systems that support them pose any danger.Full Answer >