The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
What are the regions of the electromagnetic spectrum?
Regions of the Electromagnetic Spectrum
- Gamma Rays (Wavelength < 10-12 meters) …
- X-Rays (Wavelength 10-8 to 10-12 meters) …
- Ultraviolet (UV) (Wavelength 10-7 – 10-8 meters) …
- Visible (Wavelength ~ 10-7 meters) …
- Infrared (Wavelength ~ 10-6 to 10-3 meters) …
- Microwaves (Wavelength ~ 10-3 to 10-1 meters)
What are the 7 sections of the electromagnetic spectrum?
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
What are the 7 types of electromagnetic waves and their uses?
Though the sciences generally classify EM waves into seven basic types, all are manifestations of the same phenomenon.
- Radio Waves: Instant Communication. …
- Microwaves: Data and Heat. …
- Infrared Waves: Invisible Heat. …
- Visible Light Rays. …
- Ultraviolet Waves: Energetic Light. …
- X-rays: Penetrating Radiation. …
- Gamma Rays: Nuclear Energy.
What are the 7 electromagnetic waves in order from lowest to highest frequency?
In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
How do we use the electromagnetic spectrum in everyday life?
Everyday life is pervaded by artificially made electromagnetic radiation: food is heated in microwave ovens, airplanes are guided by radar waves, television sets receive electromagnetic waves transmitted by broadcasting stations, and infrared waves from heaters provide warmth.
What frequency is dangerous to humans?
The most restrictive limits on whole-body exposure are in the frequency range of 30-300 MHz where the human body absorbs RF energy most efficiently when the whole body is exposed.
Which part of the electromagnetic spectrum has the highest energy?
What kind of radiation is light with a wavelength of 1 cm?
Electromagnetic spectrumRegionWavelength range (approx.)CommentsMicrowave1 mm – 10 cmPresent limit of radio technology for most purposes.Far infrared30 mm – 1 mm3 K radiation fills universe.Thermal infrared3 mm – 30 mmThermal emission of earth and planets.Near infrared700 nm – 3mmSolar and stellar emission.Ещё 7 строк
What do you mean by electromagnetic spectrum?
The Electromagnetic Spectrum. The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes – the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
What is the most important electromagnetic wave?
The most important of these is visible light, which enables us to see. Radio waves have the longest wavelengths of all the electromagnetic waves. They range from around a foot long to several miles long.
What color has highest frequency?
Can electromagnetic waves harm you?
There is no doubt that short-term exposure to very high levels of electromagnetic fields can be harmful to health. … Despite extensive research, to date there is no evidence to conclude that exposure to low level electromagnetic fields is harmful to human health.
Which type of electromagnetic radiation is lowest in energy?
What is the highest frequency?
Audio frequencies are expressed in hertz (Hz); although experts don’t always agree on specific values, the overall consensus is that high-frequency sounds start at 2,048 Hz. Moving backward, the range between the lowest treble and 256 Hz is known as midrange audio.
Which photon has the highest energy?