Piezoresistive effect 1970-01-01
Radio atmospheric signal 1970-01-01
Raether limit 1970-01-01
Relativistic runaway electron avalanche 1970-01-01
Relaxor ferroelectric 1970-01-01
Sauerbrey equation 1970-01-01
Sprite (lightning) 1970-01-01
St. Elmo's fire 1970-01-01
Stoletov's law 1970-01-01
Streamer discharge 1970-01-01
Triboelectric effect 1970-01-01
Two-photon photovoltaic effect 1970-01-01
Upper-atmospheric lightning 1970-01-01
Volcanic lightning 1970-01-01
Whistler (radio) 1970-01-01