Millimetre waves can
also look at things on a very small scale. Magnetic resonance, one
type of which is used in hospital MRI scanners, can tell scientists
about what's inside materials.
There are a great many possible applications. looking at molecules
such as DNA and proteins can help with the development of more effective
drugs. Understanding the structure of thin magentic films improves
hard disk capacity.
The pictures show HIPER, the first of the next genration of electron
spin resonance machines, built in St Andrews.
HIPER shines very short intense pulses onto the sample then looks
for tiny signals coming back billionths of a second later. This
is like staring into a car's headlights then trying to see a candle
the HIPER website