physics and astronomy造句
Editor'snote:MegUrryistheIsraelMunsonprofessorofphysicsandastronomyandchairoftheDepartmentofphysicsatYaleUniversity.Intheautumnof1961,AleksandrSolzhenitsynwasa43-year-oldhighschoolteacherofphysicsand...
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Jointheastronomyclub.Withoutthisunderstanding,astronomyisverydifficult.Doyouknowanythingaboutastronomy?Inastronomy,inopticalastronomywecannotmeasuretheperiodorthefrequencyofopticallight.THEhereandnowa...