Show Freaks arid anid Oddities I In Science News f Waves of or electrons will soon allow the scientist to obtain a clearer picture of or the internal structure of crystals than ever before possible very short wave lengths are ELECTRON VA WAVES YES available In electron waves TO REVEAL RE and this results in greater CRYSTAL power lower to photograph the fine CONSTRUCTION crystal structure of matter Electrons act like waves in much the same way as light and X Lenses concentrate the beam of electrons The electron is what hat may be t termed a particle of electricity The new new ew discoveries bridge the previous gap sap between mater matter mat mat- ter er and electricity Just as shortening the wave-length wave of light used in n illuminating a microscope allows smaller objects tobe to tobe be je seen sten use oi ot electrons made visible by their effects on n photographic plates allows physicists to study more minute structures in crystalline matt matter r. r The electron elec- elec tron ron waves are diffracted by crystals and give rise to diffraction patterns which are quite similar to those produced by X X-ray X studies have given much information on matters matter's structure in the past decade The scattering power of atoms is about a million times imes greater for waves than for X The electron waves will wUl therefore give information chiefly regarding the structure of surfaces of crys- crys als whereas the X-ra X rays X-rays s 's give give- information about the structure of the bodies o or of crystals I 77 A party of ot sixteen n University sity of Chicago students stu- stu U 4 dents under the supervision of Dr Fay-Cooper Fay Cole has begun excavation at Indian mounds near here ere in the hope of discovering Information about the he oldest known inhabitants of the region These most ancient inhabitants have been named the black sand and people The name was vas given them because nine inc skeletons were found buried in black glacial sand beneath Indian mounds last summer This year the he expedition hopes to recover reco implements and ornaments ornaments or- or aments which will shed light on the home life and customs of the ancient tribe The black sand Indians are re estimated to have lived at least 2000 years ago |