The generation of millimetre waves

Problems in the generation of millimetre waves are considered, and further study of sparked generators is found desirable. A contribution is made to the simple theory of such generators. Experiments made to verify the theory are not wholly successful, but their evidence, together with that of other workers, strongly suggests that this simple theory is largely correct. Experiments at variance with the present results are examined critically. It is concluded that useful results can only be obtained with sparks in oil.