Radio waves
answ2. Radio waves down to about 10kHz are used to communicate with submarines, without their surfacing.
Your national power grid radiates E-M waves at its operating frequency, but not intentionally.
Lightning strokes radiate over a wide spectrum, even into the low audio range, and this used to be used to study some properties of outer space, before the advent of satellites.
Electromagnetic radiation is a form of energy that travels in waves and does not require a medium to propagate. It has characteristics such as wavelength, frequency, amplitude, and speed. These characteristics determine how electromagnetic radiation behaves, including how it interacts with matter, how it is absorbed or reflected, and how it can be used in various applications such as communication, imaging, and energy generation.
The set of frequencies of the electromagnetic waves emitted by the atoms of an element is known as its atomic emission spectrum. Each element has a unique spectrum due to the specific energy levels of its electrons. By analyzing the spectrum of emitted light, scientists can identify the element present.
Increasing the frequency will always decrease the wavelength. Wavelength lambda and frequency f are connected by the speed c of the medium. c can be air = 343 m/s at 20 degrees celsius or water at 0 dgrees = 1450 m/s. c can be light waves or electromagnetic waves = 299 792 458 m/s. The formulas are: c = lambda x f f = c / lambda lambda = c / f
Yes. That is why we see light from distant stars, and use radio telescopes to see even older (more distant) structures. It might be easier to imagine light has having particle properties and wave properties both. Light arrives in discrete packets of energy (particles), yet can be "guided" and "directed" like waves.
The entire range of electromagnetic frequencies is called the electromagnetic spectrum. It includes all wavelengths of electromagnetic radiation, from radio waves to gamma rays.
The electromagnetic waves with the longest wavelength are called radio waves.
As the frequency of electromagnetic radiation decreases, its wavelength increases. This is because wavelength and frequency are inversely proportional in electromagnetic waves, as defined by the equation speed = frequency x wavelength. A lower frequency corresponds to a longer wavelength in the electromagnetic spectrum.
infrared
Shortest wavelength is gamma rays. Next longer wavelength is with Xrays. Then Ultraviolet, visible radiations, infra red, microwaves, radio waves with shorter wavelength and radio waves with longer wavelength
As far as visible spectral lines are concerned, red has the largest wavelength. If we consider electromagnetic spectrum, then radio waves could be considered as longer wavelengths. Even longer are long waves.
Scientists group electromagnetic waves into categories according to their wavelength. Technically a radio wave has a longer wavelength then a microwave but that's the only fundamental difference. They are both electromagnetic waves.
"radio waves" have longest wavelength..
As you move from gamma rays to radio waves on the electromagnetic spectrum, the wavelength gets longer and the frequency decreases. Gamma rays have the shortest wavelength and highest frequency, while radio waves have the longest wavelength and lowest frequency.
Shorter. The wavelength of electromagnetic waves decreases as you move from left to right across the spectrum, starting with radio waves and ending with gamma rays.
Radio waves. They are a form of electromagnetic waves with a much lower frequency than light, meaning a longer wavelength.
Radio waves are electromagnetic waves. The radio waves have the longest wavelengths in the electromagnetic spectrum. A radio wave has a much longer wavelength than does visible light. We use radio waves extensively for communications.
Assuming you mean other electromagnetic waves: that would be infrared radiation, microwaves, and radio waves.