The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
من داخل الكتاب
النتائج 1-5 من 30
الصفحة 5
... substance this is that a vast nebula once occupied the entire area of our solar universe . In the process of con- densation the various planets and their satellites broke away and gradually cooled while the central sun still retains a ...
... substance this is that a vast nebula once occupied the entire area of our solar universe . In the process of con- densation the various planets and their satellites broke away and gradually cooled while the central sun still retains a ...
الصفحة 6
... substances raises other doubts . Barrell claims that " if they extend in their surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears ...
... substances raises other doubts . Barrell claims that " if they extend in their surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears ...
الصفحة 7
... substance called coronium known only by lines in the solar spectrum and which has not been found on earth . Under the peculiar conditions existing then , in bygone ages , the various sub- stances found on earth as well as in the stars ...
... substance called coronium known only by lines in the solar spectrum and which has not been found on earth . Under the peculiar conditions existing then , in bygone ages , the various sub- stances found on earth as well as in the stars ...
الصفحة 8
... substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare . Some are known by name , at least , to every one but it is doubtful if one person in a ...
... substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare . Some are known by name , at least , to every one but it is doubtful if one person in a ...
الصفحة 10
... substances were discovered and studied . In 1774 , Priestley and Scheele both found oxygen and the hoary idea that fire was a separate entity , phlogiston , was soon destroyed . Before 1800 , Cavendish had discovered hydrogen and found ...
... substances were discovered and studied . In 1774 , Priestley and Scheele both found oxygen and the hoary idea that fire was a separate entity , phlogiston , was soon destroyed . Before 1800 , Cavendish had discovered hydrogen and found ...
المحتوى
| 347 | |
| 356 | |
| 357 | |
| 362 | |
| 374 | |
| 375 | |
| 391 | |
| 406 | |
| 151 | |
| 178 | |
| 183 | |
| 202 | |
| 209 | |
| 237 | |
| 269 | |
| 276 | |
| 295 | |
| 323 | |
| 424 | |
| 430 | |
| 438 | |
| 449 | |
| 465 | |
| 478 | |
| 481 | |
| 503 | |
| 511 | |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
acres Africa alloy America appears areas Asia atoms average bacteria birds black bass body carbon carbon dioxide cattle cause cells Cenozoic cent century changes chemical chlorophyll climate coal common compounds crops cultivated culture death rate destroy disease distribution domestic animals early earth eaten eggs elements enemies Europe evidence fact fish forms germ germ cells hawk heat horse human hydrogen Ibid important increase Indian insects iron killed known land later light live man's metals mice migration miles moth native nature neolithic nitrogen ocean organisms oxygen Pará rubber tree parasites plants and animals population pounds produce protoplasm R. S. LULL race regions rodents season seeds seems sharp-shinned hawk sheep soil South South America species square mile substances sugar supply surface survive tarpan temperature thousand tion to-day trees tropics types United wild