1. An electromagnetic wave is a wave emanated by a quickened or oscillatory charge in which fluctuating attractive field is a wellspring of attractive field.
2. Dislodging CURRENT: The line indispensable of attractive field for any shut way relies on upon the entirety of consistent current puncturing a surface limited by the shut way.
3. Wellspring OF ELECTROMAGNETIC WAVES: Waves of vitality that are brought on by the acct of charged particles and comprise of electric and attractive fields vibrating transversely and sinusoidal at right points to each other and to the heading engendering are called electromagnetic waves are electromagnetic radiation.
4. Force OF AN ELECTROMAGNETIC WAVE: An amount of more intrigue then vitality thickness is the vitality power or power of electromagnetic wave. ( the measure of vitality intersection per unit range per unit time in a course opposite to the heading of proliferation of the wave is called force of electromagnetic wave.
5. ELECTROMAGNETIC SPECTRUM:(MAXWELLS RAINBOW): The scope of frequencies (or wavelengths) over which electromagnetic radiation can be proliferated is known as the electromagnetic range or MAXWELLS RAINBOW.
6. RADIO WAVES (feq. range: 500 KHZ to around 1000 MHZ): electromagnetic influx of wavelength longer then around 1 meter are called radio waves.
7. MICROWAVES (Feq. range :1 GHZ TO 100 GHZ): electromagnetic wave with wavelengths in the rough scope of 1 mm to 0.3 m (i.e.,b/w infrared and radio wave ) are called microwaves.
8. INFRARED(IR) WAVES ( Feq . range: 1011 HZ to 5× 1014 Hz): electromagnetic waves going the distance from the short-wavelength end of the microwaves (for infrared) to the red furthest reaches of unmistakable light (close infrared) are called i.r. wave. they have a wave length scope of 0.7µm to around 1 cm .
9. Obvious LIGHT ( Feq range : 4×1014 Hz to around 7×1014 Hz ) : that little divide of the electromagnetic range the human eye can identify is generally alluded to as light and it includes and to a great degree little scope of wave-length b/w 400 nm to 700 nm.
10. Bright( UV) RADIATION ( Feq. range :1014 Hz to 1017 Hz ): UV is electromagnetic radiation past the violet end of the unmistakable range and covers wavelengths going from around 380 nm down 0.6 nm.
11. X-RAYS (Frequency range : 1017 Hz to 1019 Hz ): X-beams are electromagnetic waves with wavelengths in the scope of around 10 nm to 10-4 nm.
12. GAMMA RAYS (FREQUENCY RANGE : 1018 Hz TO 1022 Hz): The electromagnetic rushes of highest recurrence scope of the know electromagnetic range are called gamma beams and are the most limited of all electromagnetic waves with their wavelengths extending from roughly 10-1 nm to under 10-5 nm (i.e., of the request of the span of the core of an iota, 10-15 m).
0 comments:
Post a Comment