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Unpuzzling the Universe I
Within the Suns Family
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airplane alpha particles aluminum American animals artificial astronomers atom autogyro balloon become beryllium body bones brain cause cent changes chemical color cosmic rays deuterium deutons discovered discovery disease early earth effect electrical elements energy engine erosion expedition experimental experiments eyes feet forest frequency gamma rays geological gland heavy hydrogen heavy water height helium hormone human hydrogen iconoscope important inch increase Indian insects Institute Jivaro known laboratory land layer light living malaria male mass matter ment mental meters method miles per hour million volts modern mosquito Mound Builders natural nerve neutrons Nordic observed parathyroid patients photographic physicists pilot pituitary pituitary gland plant population positron produced Prof proton radiation radio radioactivity region result scientific scientists Sealand showed speed stars sterilization stratosphere sunspot temperature theory tion transmutation tube United University voltage volts waves weather X-rays