It May Well Be Said That The Answer To The Question: Of What Do The Cosmic Rays In Fact Consist Before They Produce Their Familiar Secondary Radiation Phenomena In The Earth's Atmosphere? Can Only Be Obtained From Numerous Measurements In The Stratosphere.

It may well be said that the answer to the question: Of what do the cosmic rays in fact consist before they produce their familiar secondary radiation phenomena in the earth's atmosphere? can only be obtained from numerous measurements in the stratosphere.

Victor Francis Hess

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In order to make further progress, particularly in the field of cosmic rays, it will be necessary to apply all our resources and apparatus simultaneously and side-by-side; an effort which has not yet been made, or at least, only to a limited extent.

Victor Francis Hess

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