szikra

• sparklet

• fat spark

• vital spark

• dead as a dodo, dead as a doornail, dead as a mutton

• quencher

• wireless, wireless telegraphy

• spark ignition

• spark spectrum

• wireless, wireless message

• spark, spark telegraphy

• sparks

• damper

• spark frequency

• spark frequency

• spark-line

• the current sparks the gap

• exploder