EM WAVES

Electric Field

region or space where a charged particle is capable of exerting either repulsive or attractive force on the charged material

Magnetic Field

A region or space where a magnet is capable of exerting either a repulsive or an attractive force on a magnetic material

Electromagnetic Waves

what does the interplay between electric and magnetic fields produce

Electromagnetic Waves

produced by the accelerating charged particles with the electric and magnetic fields vibrating perpendicularly into each other

frequency

what does the energy of EM waves depend on

Non-ionizing radiation

has the insufficient energy to ionization

Ionizing radiation

type of energy released by atoms that travels in a form of EM waves

• longest wavelength

• lowest frequency

• its frequency range is divided into specific bands

Description of radio waves

• used in monitoring highway patrol

• used in wi-fi and bluetooth

• used in reducing cellulite on the body

advantages of radio waves

- can quickly heat tissues to lethal levels

- can cause harm to nature and wildlife 

-  can induce the imbalance of amino acid neurotransmitters in various parts of the brain

disadvantages of radio waves

- microwave currents flow through a thin outer layer of ordinary cable

- not reflected by ionosphere

description of microwaves

- used to send signals for cable television

- used in cooking/heating food

- used to shrink/destroy tumors

advantages of microwaves

- can cause internal heating of body tissues

- brain dysfunction

- can lead to cataracts

disadvantages of microwaves

- cannot be seen by the naked eye but can be felt as heat

- infrared radiation is proportional to the body’s temperature

description of infrared

- used to heal sports injuries

- equipped in most gadgets for wireless data tranfer and printing

- can also be used in cooking food

advantages of infrared

- can contribute to premature skin aging

- can lead to skin damage

- damages our environment as it is involved in greenhouse effects

disadvantages of infrared

- can be seen by the naked eye

- visible in a sequence of colors

description of visible light

- helps you see objects

- used in every device with a viewable screen

- used in lasers for different medical procedures

advantages of visible light

- can contribute to retinal damage

- can cause thermal damage to the skin

- can induce greater hyperpigmentation

disadvantages of visible light

- UVC does not reach the Earth’s atmosphere

- UVB is filtered by the ozone layer

- UVA accounts for 95% of the solar UV that reaches the Earth

description of ultraviolet rays

- stimulates vitamin D production

- used during forensic investigations

- sterilizes medical equipment

advantages of ultraviolet rays

- can cause sunburn

- can cause eye damage

- can damage rubbers and plastic during disinfection

disadvantages of ultraviolet rays

- classified as either soft or hard

- soft X-rays are lower in energy

- hard X-rays are higher in energy

description of X-RAY

- detects abnormalities in the skeletal system

- used in security checks to scan contents of luggage

- used to study the arrangement of atoms in a crystal in diffraction

advantages of X-RAY

- risks of developing cancer

- risks of developing cataracts

- risks of ionizing

disadvantages of X-RAY

- shortest wavelength

- highest frequency

- highly penetrating

description of gamma rays

- detects cracks in metals

- kills bacteria, insects, and parasites in food

- destroys cancer cells

advantages of gamma rays

- high doses can damage reproductive organs and reduce fertility

- can potentially contaminate water and soil

- can potentially cause birth defects

disadvantages of gamma rays

inverse

relationship between wavelength and frequency/energy

proportional

relationship between frequency and energy

radio waves, microwaves, infrared, visible light, uv rays, x-rays, gamma rays

em waves in order (longest to shortest wavelength)