What part of the electromagnetic spectrum has the longest wavelength?

Answer 1

Radio waves are the longest, then Microwaves, infrared, Ultra Violet (UV), X-rays, Gamma Rays are the smallest.

The longest electromagnetic waves are those of the low audio frequency, and since these can penetrate sea water, these are used for submarine communication. But at a very low information rate.

[The shortest e-m waves are those of gamma radiation, particularly those of gamma ray bursts (GRB) which originate outside our galaxy. ]

Answer 2

radio waves
Radio wavelenght
Radiowaves is the most common long-wavelength electromagnetic radiation you're likely to come across....however they're not all that long in the grand scheme of things - especially when you consider a wave has infinite potential length.

Longwave radio can have a wavelength of up to 1000 meters...I'm not sure if there's any application beyond those lengths. I'm sure a physicist could come up with some interesting related facts.
I will assume you meant electromagnetic radiation (EMR).

The type of EMR is defined by it's wavelength, not the other way around.

there is no upper limit for EMR wavelength, but a "long radio wave" is defined as an EMR with a length of 10^3 meters (one kilometer) and above.

I guess you could say that's the radiation with the longest wavelength.
There are 7 types of electromagnetic radiation: # Gamma waves # X-rays # Ultra-violet (UV) rays # Light rays # Infra red rays # Microwaves # Radio waves The above list goes in order of descending wave length. So then, radio waves have the longest wave length.

Answer 3

The longest wave length electromagnetic (EM) radiation, and therefore the lowest frequency EM radiation is the lowest ultra low frequency (ULF) radiation. The ULF band's lowest frequency as set by the International Telecommunications Union (ITU) is 300 Hz to 3 kiloHz, so the longest wavelength EM radiation is something around or a bit below 300 cycles per second.

Answer 4

Well, there are actually no ends to the EM spectrum, so there's no 'highest'

or 'lowest' frequency, no 'longest' or 'shortest' wavelengths.

No name that we use for any part of the electromagnetic spectrum applies to

longer waves (lower frequencies) than "radio waves".

Answer 5

The longest wavelength is always associated with the lowest frequency. On the

electromagnetic spectrum, that would correspond to whatever is down below the

bottom of the radio dial.

Probably the lowest frequency we encounter in everyday life is the field radiated by

the AC flowing in the electric power lines on the utility poles and in our homes. The

frequency of that current is 60 Hz (50 Hz outside North America). The corresponding

wavelength is

5,000 kilometers (3,107 miles) for North American AC current

6,000 kilometers (3,728 miles) outside North America.

Answer 6

There is one electromagnetic spectrum, but the anwser is radio waves (low freq)

Answer 7

The longest waves used regularly for communications are the VLF radio waves with a wavelength up to 30 kilometers.

Answer 8

the answer to that would have to be infared

Answer 9

Radio waves are relatively very low in Frequency, yet the 60 cycles per second [ 60 hertz ] emenations from our appliances are lower [with longer Wavelengths].

Answer 10

Infrasonic radio waves, which may even be quite natural, and extend to low audio frequencies. Check out Whistler (Radio) in Wikipedia.