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LASER – Light Amplification by Stimulated Emission of Radiation
RADAR – RAdio Detection And Ranging
SONAR – SOund Navigation And Ranging
MRI – Magnetic Resonance Imaging ( Using magnetic field to produce an image of the inside body of a person )
CT Scan – CAT Scan : A medical examination that uses a computer to produce an image of the inside of somebodys body from x ray or ultra sound pictures.
Olympic rings: Blue – Europe, Yellow – Asia, Black – Africa, Green - America, Red – Australia.