Maximising the power of waves

TECHNOLOGY FOR EXTRACTING POWER FROM SEA WAVES IS STILL VERY MUCH AT THE DEVELOPMENTAL STAGE, BUT IT IS ALREADY WELL KNOWN THAT DEVICES IN WHICH THE WAVES SET UP AN OSCILLATION (SUCH AS THE ARCHIMEDES WAVE SWING OR THE OSCILLATING WATER COLUMN) WORK BETTER IF THEY CAN ACHIEVE RESONANCE WITH THE 'FORCING' IMPULSE I.E. THE WAVES. IN FACT, EXPLOITING THE RESONANCE PHENOMENON CAN AMPLIFY HARVESTED POWER SEVERAL TIMES OVER WHAT IT WOULD OTHERWISE BE. GEORGE MARSH INVESTIGATES.