The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 132
... materials . Film materials . Most of the above - mentioned groups of chemicals that can be used either as plastics or elasto- mers can also be made into the form of coherent films . In the more highly industrialized countries there is a ...
... materials . Film materials . Most of the above - mentioned groups of chemicals that can be used either as plastics or elasto- mers can also be made into the form of coherent films . In the more highly industrialized countries there is a ...
Page 149
... materials , or it may dissociate to give the products ( region c in Figure 1 ) . The products in the case of the reaction chosen are the ions E + and N- , which are held together by electrostatic attraction as an ion pair at the right ...
... materials , or it may dissociate to give the products ( region c in Figure 1 ) . The products in the case of the reaction chosen are the ions E + and N- , which are held together by electrostatic attraction as an ion pair at the right ...
Page 183
... materials repel various insects . There seems to be no generally occurring repellent for all in- sects , nor has any special relationship between chemical composition and olfactory repellency been discovered . Protection of man and ...
... materials repel various insects . There seems to be no generally occurring repellent for all in- sects , nor has any special relationship between chemical composition and olfactory repellency been discovered . Protection of man and ...
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