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