Scientific American, Bände 180-181

acetylene acid Amateur Telescope amoebae amount animals antibiotic astronomer atmosphere atomic bombs Atomic Energy aureomycin auxin BINOCULARS biological blood cancer carbon cells cent chemical Condon cosmic rays craters Cynognathus degrees Dennis Flanagan diameter disease earth Easter Island effect electrical electron engineering enzyme experiments field Galileo glycine heat helium high vacuum hormones human inch industry Institute investigation isotopes Krakatoa laboratory lenses light liquid machine material mathematical ment mesons metal method miles million mirror molecules National neutrons nuclear observed Oedipus operation optical organism oxygen particles penicillin photograph physical physicist plant possible Postpaid potassium prism problem produced radiation radio radioactive reactor result rocket SCIENTIFIC AMERICAN scientists social Spotting Scope stars streptomycin substance telescope temperature theory thorium tion titanium tube University uranium virus waves X-ray York