Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f), wavelength (λ), or photon energy (E). The spectrum can be ordered according to frequency or wavelength.

Expert Answer:

• Characteristic of electromagnetic waves are as follows: –
• (i) They do not require any material medium for their propagation.
• (ii) The oscillations of and are perpendicular to each other and are in same phase.
• (iii) They are transverse in nature.
• (iv) They travel through vacuum with same speed,

Electromagnetic radiation is an electric and magnetic disturbance traveling through space at the speed of light (2.998 × 108 m/s). It contains neither mass nor charge but travels in packets of radiant energy called photons, or quanta.

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

Conclusion: Electromagnetic radiation may lead to the changes in physiological indices, genetic effects, and immune function and affect the health and immune function in operators. The adverse effects are increased as the working years increase.

Electromagnetic radiation can be thought of as particles, called photons, that carry energy in straight-line paths through space. As they move through space, photons carry electric and magnetic fields that oscillate at a certain frequency. All electromagnetic waves are similar to each other.

Gamma rays are the most energetic form of light. infrared: A type of electromagnetic radiation invisible to the human eye. The name incorporates a Latin term and means “below red.” Infrared light has wavelengths longer than those visible to humans. Other invisible wavelengths include X-rays, radio waves and microwaves.

As I understand it, electromagnetic waves have two components which are the result of each other, i.e., when a moving electric charge creates a changing magnetic field at point X then a changing electric field is created at point Y and this repeating process is what creates EM waves, so therefore, it requires no medium …

Electromagnetic propagation through water is very different from propagation through air because of water’s high permittivity and electrical conductivity. Plane wave attenuation is high compared to air, and increases rapidly with frequency.

Electromagnetic waves, like any wave, have a finite speed value which is dependent upon the properties of the medium through which it flows. The speed of a wave is independent of its frequency and wavelength. A change in the frequency value will not result in a change in the speed value.

Speed of light in water is 3/4 of the speed of light in air. Sound travels three times faster in water than in air. Waves bend towards the slower region. Wave interacts with molecule and transfers it’s energy to the molecule.

The absorption of electromagnetic radiation by water depends on the state of the water. Liquid water has no rotational spectrum but does absorb in the microwave region. Its weak absorption in the visible spectrum results in the pale blue color of water.

Light penetrating a water surface is scattered and absorbed or quenched as it passes downward. Water scatters but does not absorb ultraviolet light. It absorbs infrared light quickly – little infrared light penetrates more than 2 meters. Light is quenched rather quickly even in clear water.

Electromagnetic (EM) waves carries no electric charge at all. EM waves originate from electromagnetic disturbances, and according to Maxwell’s equation, changing electric fields gives rise to magnetic fields, and changing magnetic fields gives rise to electric fields, and so on. That’s how EM waves propagate.

Water owes its intrinsic blueness to selective absorption in the red part of its visible spectrum. The absorbed photons promote transitions to high overtone and combination states of the nuclear motions of the molecule, i.e. to highly excited vibrations.