The electromagnetic Spectrum
The electromagnetic spectrum (in order of increasing wavelength) is:
Gamma and x-rays
All electromagnetic waves travel through space at a speed of 300 million m/s.
Wave speed= wavelength x frequency.
Gamma rays and x-rays
X-rays and gamma radiation are absorbed by dense materials in bone and by 2metal.
X-rays and gamma radiation damage living tissue when they pass through it.
X-rays are used in hospitals to take radiographs.
Gamma rays are used to kill harmful bacteria in food, to sterilise…