- Electricity and radio waves can be used to power man-made devices
- We see different frequencies of visible light waves as different colors
- X-rays can show inside some solid objects
This section aims to help you understand more about the basic science of electromagnetic waves and how they make mobile phones work.
What are radio waves?
Electric and magnetic fields are fundamental forces in nature. Together they create invisible electromagnetic waves which pass through the environment - like ripples on the surface of water.
Electromagnetic waves have different properties and uses, depending on their wavelength. Radio waves occur within a specific range of wavelengths, and are useful for transmitting sound and digital signals.
Lower frequency waves such as microwaves cannot change the structure of biological material, but can have a heating effect called non-ionising radiation. Higher frequency waves like x-rays can change the structure of biological material. This is called ionising radiation. Radio devices emit non-ionising radiation.
Living with electromagnetic waves
Natural sources of electromagnetic waves include the sun. This emits light, UV and radio waves. The earth itself generates a magnetic field. And lightning creates both an electric field and radio waves.
Doing our bit
We see radio wave emission issues as important, and are committed to providing responsible leadership. That is why Nokia is focussing on EMF and health issues, and participates in a number of industry associations and scientific forums. Nokia aims to support the World Health Organisation (WHO) by explaining the EMF protection scheme behind the recommendations from WHO and ICNIRP (International Commission on Non Ionising Radiation Protection) to all interested individuals or groups.