Working waves
16.2.4 Modern Communication Systems – How Cell-Phones and Broadband Work
16.2.5 The Work of Radiologists X- and γ-Ray Imaging and Therapy
Week 4
theraputic use of radiation
advanteages of technetium-99
6 hour half life
anger/gamma camras
prinicples of radioactive tracers
Week 3
CAT scans
protection measures
image intensifiers
meter exposure
reduce exposure
health hazards
cell damage by ionisation
improvign x-ray quality
narrow beam
beam filtration
grid
Extending the EM Spectrum into the X & Y ray spectra
difference in absorbtion of x-rays
appearence of x-rays on film
16.2.3 How Optical Fibres Carry Data
16.2.2 How Infrared Imaging Works
Week 2
Week 1
16.2.1 Wave properties
Subtopic
describe the features belonging to some waves, but not others;
EM SPECT
how it interacts with matter
detection
how it varies with frequency
transmission
production
describe the features unique to electromagnetic waves;
can exist in vacuum
vibrating fields
Needs a medium
vibrating matter
Longitudinal
Transverse
Different speeds
describe the features common to all waves;
recall and use v = fλ;
amplitude
period
energy transfer
frequency
higher - more energy
wavelenght
