Answer 1: The most obvious source of electromagnetic energy and radiation is
the sun
. The sun provides the initial energy source for much of the remote sensing of the Earth surface. The remote sensing device that we humans use to detect radiation from the sun is our eyes.
What are the source of electromagnetic wave?
Examples of EM radiation include radio waves and microwaves, as well as infrared, ultraviolet, gamma, and x-rays. Some sources of EM radiation include
sources in the cosmos (e.g., the sun and stars), radioactive elements, and manufactured devices
. EM exhibits a dual wave and particle nature.
What is the most important source of electromagnetic waves?
The most important source of electromagnetic waves on Earth is
the sun
. Electromagnetic waves travel from the sun to Earth across space and provide virtually all the energy that supports life on our planet. Many other sources of electromagnetic waves depend on technology.
What is the ultimate source of electromagnetic wave?
The ultimate source of electromagnetic waves is
moving charged particles
.
What is the simplest source of electromagnetic waves?
Electromagnetic waves are generated due to changes of electric and
magnetic
fields associated with oscillating charges.
What are 3 sources of electromagnetic waves?
- solar radiation, in other words natural radiation that originates from the sun.
- terrestrial radiation, in other words natural radiation emitted by the Earth’s surface.
- artificial radiation originating from a remote sensing system.
Do electromagnetic waves lose energy?
An EM wave can travel without a material medium—that is, in a vacuum or space empty of matter—and
does not lose energy as it moves
. In theory, an EM wave can travel forever. Because they do not need a medium, EM waves can pass through outer space, which is a near vacuum.
How electromagnetic wave is created?
Electromagnetic waves are produced
whenever electric charges are accelerated
. This makes it possible to produce electromagnetic waves by letting an alternating current flow through a wire, an antenna. The frequency of the waves created in this way equals the frequency of the alternating current.
What are 2 sources of EM waves in Earth’s environment?
Electromagnetic fields are present everywhere in our environment –
the earth, sun and ionosphere
are all natural sources of EMF.
Does light behave like a particle?
Until about 1900, scientists only understood electromagnetic radiation to be made up of waves. … So
light behaves as a wave and as a particle
, depending on the circumstances and the effect being observed. This concept is now known as wave-particle duality.
What are the 4 main properties of electromagnetic waves?
Every form of electromagnetic radiation, including visible light, oscillates in a periodic fashion with peaks and valleys, and displaying a
characteristic amplitude, wavelength, and frequency
that defines the direction, energy, and intensity of the radiation.
What do all waves have in common?
All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference, and all waves have
a wavelength, frequency, speed and amplitude
. A wave can be described by its length, height (amplitude) and frequency. All waves can be thought of as a disturbance that transfers energy.
What is called electromagnetic wave?
Definition: Electromagnetic waves or EM waves are
waves that are created as a result of vibrations between an electric field and a magnetic field
. … They are hence known as ‘electromagnetic’ waves. The electric field and magnetic field of an electromagnetic wave are perpendicular (at right angles) to each other.
When can a charge act as a source of electromagnetic waves?
Only accelerated charge can
radiate electromagnetic waves. As charge moving in a circular orbit is accelerated , so it can radiate electomagnetic waves.
What are the 7 electromagnetic waves and their uses?
- Radio waves: Communication.
- Microwaves: Heating and data transmission.
- Infrared waves: Used in remote control and imaging applications.
- Visible light: Help us see everything around us.
- Ultraviolet Waves: Useful in the study of galaxies.
What are the 7 types of radiation?
The electromagnetic spectrum includes, from longest wavelength to shortest:
radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays
. To tour the electromagnetic spectrum, follow the links below!
