Electromagnetic fields (EMF) are imperceptible energy or electrical fields that range our whole condition and communicate with the energy fields present in our bodies and in physical articles around us. The EMF range incorporates radio waves, microwaves, infrared, noticeable light, bright, x-beams, and gamma beams. Every one of these classes on the range is associated with an increasingly more noteworthy frequency or recurrence. Each position of the EMF range additionally transmits a level of radiation, making a portion of these frequencies possibly perilous for human health. 

There are four subgroups of electromagnetic radiation fields with recurrence and power. This electromagnetic range starts at a recurrence of 1 Hertz ( Hz), which is 1 wave for every second. 

Static electric 

Fixed electric energize that is based on the surfaces and materials. Electric fields are associated with the nearness of electric charge, attractive fields result from the physical development of electric charge. The human body can not feel under 2000 volts of static release. Attractive fields can apply physical powers on electric charges when charges are moving. The attractive transition thickness measured in teslas (T), is acknowledged as the most applicable amount for identifying with attractive field impacts (4). 

Extremely Low Frequency (ELF) 

Extreme low recurrence is a term used to portray radiation frequencies under 300 Hertz (Hz). Mythical personal fields are swaying fields and significant for general health on account of the widespread utilization of electrical power at 50-60 Hz in many nations. 

Intermediate Frequency (IF) 

Intermediate Frequency is a term to depict radiation recurrence between 300 Hz and 100 kHz. There is exploratory and epidemiological information from the IF go. Therefore, assessment of intense health risks in the IF extent is as of now based on known perils at lower frequencies and higher frequencies. Appropriate assessment and assessment of conceivable health impacts from long haul exposure to IF fields are significant on the grounds that human exposure to such fields is increasing because of new and developing advancements. Run of the mill models is PC and television screens with cathode beam tubes, reduced fluorescent lights, as well as radio transmitters, against robbery gadgets in shops, hands-free access control frameworks, card readers, and metal finders. It is additionally utilized in electrosurgery. 

Radio Frequency (RF) 

RF incorporates the frequencies between 100 kHz and 300 GHz of the electromagnetic range. RF sources are broadly utilized in the entire world. Larger part models are cell phones, broadcasting, clinical and modern applications. The RF sources are utilized in different recurrence groups and partitioned in different classifications: 

1. Sources worked in the human body 

Primary instances of this sort are versatile RF transmitters. One of the models is cell phones; more than 1.5 billion individuals are utilizing cell phones around the world. Notwithstanding cell phones, different wireless applications like cordless phones, for example, DECT, or WLAN frameworks are exceptionally normal. Wifi routers at your home create high radiation therefore, wifi router radiation safe distance ought to be kept up at your home. 

2. Sources worked far away from the human body 

Such sources are fixed by RF transmitters. A model is base stations that are a fundamental piece of portable correspondence systems. 

3. Clinical applications 

Some clinical applications utilize electromagnetic fields in the RF go. Helpful applications, for example, delicate tissue recuperating appliances, hyperthermia for malignant growth treatment, or diathermy uncover the patient well over as far as possible qualities to accomplish the proposed natural impacts.