Task 2:
The table shows the application of Electromagnetic wave/spectrum. The technologies listed were
classified as non-ionizing and ionizing radiation. Read/study and make your own conclusion on the effects of
Electromagnetic Radiation in human's health.
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Answer:
Sources of exposure to static fields and their flux densities.
2.2. Extremely Low Frequency (ELF)
Extremely low frequency is a term used to describe radiation frequencies below 300 Hertz (Hz). ELF fields are oscillating fields and very important for public health because of the widespread use of electrical power at 50-60 Hz in most countries (1,5).
2.3. Intermediate Frequency (IF)
Intermediate Frequency is a term to describe radiation frequency between 300 Hz and 100 kHz. There are experimental and epidemiological data from the IF range. Therefore, assessment of acute health risks in the IF range is currently based on known hazards at lower frequencies and higher frequencies. Proper evaluation and assessment of possible health effects from long term exposure to IF fields are important because human exposure to such fields is increasing due to new and emerging technologies. Typical examples are: computer and tv screens with use cathode ray tubes, compact fluorescent lamps, as well as radio transmitters, anti theft devices in shops, hands free access control systems, card readers and metal detectors. It is also used in electrosurgery (1,2).
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