The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 4
Page 132
... proton and two neutrons , has triple the mass of the nucleus of ordinary hydrogen . Tritium is a radioactive species emitting negative beta particles of 19,000 elec- tron volts energy and having a half - life of 12.5 years ; it occurs ...
... proton and two neutrons , has triple the mass of the nucleus of ordinary hydrogen . Tritium is a radioactive species emitting negative beta particles of 19,000 elec- tron volts energy and having a half - life of 12.5 years ; it occurs ...
Page 291
... protons and two neu- trons . Thus alpha emission lowers the atomic number ( proton number ) by two units , the neutron number by two units , and the mass number ( total number of protons and neu- trons ) by four units . Thus the parent ...
... protons and two neu- trons . Thus alpha emission lowers the atomic number ( proton number ) by two units , the neutron number by two units , and the mass number ( total number of protons and neu- trons ) by four units . Thus the parent ...
Page 851
... protons in the nu- cleus of an atom of an element . za , in feudal Japan , mercantile or craft guilds ( c . 1100-1590 ) . They did not become fully or- ganized until the Muromachi period ( 1338- 1573 ) , when they began to monopolize ...
... protons in the nu- cleus of an atom of an element . za , in feudal Japan , mercantile or craft guilds ( c . 1100-1590 ) . They did not become fully or- ganized until the Muromachi period ( 1338- 1573 ) , when they began to monopolize ...
Other editions - View all
Common terms and phrases
19th century Africa agricultural American ancient animals became British Buddhist caliph called capital centimetres central centre chemical China Chinese Christian Church classification colour courtesy cultural dynasty early east eastern emperor English fishing forces French genus German Greek illus important Indian industry island Italian Italy Japan Japanese king known lake land language later maize major manufacture medieval ment metres military modern Mountains Museum northern organization origin painting passim period plant political port prelim production province region religious Republic River rocks Roman Russian shogun southern Soviet Soviet Union species sq km structure style text article covers theory tion Tlaloc Tokugawa town trade tradition transport tree Triassic trouvères Turfan Turkic languages Turkmen Uighur Ukiyo-e Umayyad Umm al-Qaiwain Union United western World World War II