What is the wavelength?

The wavelength is the distance from crest to crest or trough to trough in a mechanical wave.

What is the frequency?

The frequency is the number of waves per second. It is measured in hertz. It can be many waves or part or waves.

A mechanical wave is a wave that propagates as an oscillation of matter, and therefore transfers energy through a medium

Is it low or high energy?

Radio waves have photons with low energies


What are radio waves?

Radio waves are a type of electromagnetic radiation, as are microwaves, infrared radiation, X-rays and gamma-rays.

Is it low or high energy?

Microwaves are a form of electromagnetic radiation with wavelengths ranging from as long as one meter to as short as one millimeter

What are microwaves?

Microwaves are electromagnetic waves with a wavelength in the range 0.001–0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation.

Micro Waves

Microwaves have a range of applications, including communications, radar and, perhaps best known by most people, cooking.


Radio waves

The best-known use of radio waves is for communication; television, cellphones and radios all receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves that can be heard.

Radio waves

Transmit music, conversations, pictures and data invisibly through the air, often over millions of miles -- it happens every day in thousands of different ways! Even though radio waves are invisible and completely undetectable to humans, they have totally changed society.


Microwaves

Microwaves are a type of wave that are sandwiched between radio waves and infrared radiation on the electromagnetic spectrum. In the case of microwave ovens, the commonly used wave frequency is roughly 2,450 megahertz

One of the benefits is communication.

Radio waves can help with communication by letting the astronauts out in space able to reach and talk to the people on earth.

Another benefit is better navigation.

Radio waves have enabled better navigation on aircrafts and ships.

The third benefit is increase in accuracy. By using radio waves people are able to monitor and control certain industrial environments.

Radiowaves

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.

Microwaves

Line-of-sight will be disrupted if any obstacle, such as new buildings, are in the way
Signal absorption by the atmosphere. Microwaves suffer from attenuation due to atmospheric conditions.

Towers are expensive to build

Radio Waves

The first modern forms of long-distance communication were telegraph and later telephone these used vast networks of wires to send information. Towards the end of the 19th century, This technology was further developed so that information such as sound (radio) and pictures (television) could be broadcast and received.

Microwaves

Percy Spencer invented the first microwave oven after World War II from radar technology developed during the war.

Radio Waves:

Is it harmful to us?

It is not known if radio waves can be harmful. Our cell phones transmit in the radio/microwave part of the spectrum, and studies are being done to see if they have long term harmful effects.

Micro Waves:

Nutrients are lost when heating foods in any way.

Microwave ovens don’t make foods radioactive. They just heat them. Microwave ovens heat food by producing radiation which is absorbed by water molecules in the food.