LG GoldStar MA-2003B Service Manual page 40

3-1. What's the microwave? (2/2)
3. The safety of microwave oven
Since the microwave oven can't make the native fire like gas, you have no use for worrying about the fire.
Because it doesn't become hot like the ordinary electric range. It has been used in the dinner car of the trains etc.
Microwave oven has the shielded structure strictly with metal case not to leak electric wave at once not only using but on opening
the door.
Because it uses the electric wave, the x-ray is never emitted. The UHF wave generally called microwave is like the electric wave of
the TV or the radio and is used for the wireless communication, the radar and the UHF medical instruments (using 2450 MHz like
that of the microwave oven, etc).
4. Definition of electric wave
* An electric wave is the electron wave of the frequency from 10 KHz to 3,000,000 MHz.
* Wave length of 2450 MHZ.
c
300000 Km
λ 0.122 m
f 245000 KHz
λ: Wave Length
Where c: The Velocity of Light
f: Frequency
The division from the sound frequency to the light frequency.
20 Hz 3 Hz 30 Hz 300 KHz
- - -
FREQ
20 KHz 30 KHz 300 KHz
SOUND VLF LF
NAME
WAVE
MUSIC SHIP RADIO
USE
All manuals and user guides at all-guides.com
12.2 cm
3 MHz 30 MHz 300 MHz
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3 MKHz 30 MHz 300 MHz 3 GHz
MF HF VHF ULF
RADIO RADIO T.V MWO
T.V
3 GHz 30 GHz 300 GHz
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30 GHz 300 GHz 10 16 Hz
SHF EHF LIGHT
RADAR RADAR
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