Just as the spectroscope opened up a new astronomy by enabling the astronomer to determine some of the constituents of which distant stars are composed, so the seismograph, recording the unfelt motion of distant earthquakes, enables us to see into… — Richard Dixon Oldham Copy Share Image
Just as the spectroscope opened up a new astronomy by enabling the astronomer to determine some of the constituents of which distant stars are… — Richard Dixon Oldham Copy Share Image
