Wallberg Lecture1953 |
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Página 13
... renewable and non - renewable , using these terms in relation to the human time - scale . Non - renewable resources are those which , when once removed from their natural location , are not replaced in any way known to man . In ...
... renewable and non - renewable , using these terms in relation to the human time - scale . Non - renewable resources are those which , when once removed from their natural location , are not replaced in any way known to man . In ...
Página 23
... renewable . The link between coal and our growing forests often strikes me as being unusually sig- nificant , but so also is the fact that our bodies are perhaps the greatest of all users of fuel , the fuel that is food . And the fact ...
... renewable . The link between coal and our growing forests often strikes me as being unusually sig- nificant , but so also is the fact that our bodies are perhaps the greatest of all users of fuel , the fuel that is food . And the fact ...
Página 31
... renewable resources : we are prob- ably still a long way from that " point of no return " so recently passed by our neighbour country to the south . But surely that should make us the more anxious to use well all that we have and to ...
... renewable resources : we are prob- ably still a long way from that " point of no return " so recently passed by our neighbour country to the south . But surely that should make us the more anxious to use well all that we have and to ...
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1953 Resources Applied Science asbestos aspects British Columbia Canada of today Canadian capita cent citizens civil engineer coal Commission conservation consider Division of Building early engineering economic essential fact Faculty of Applied forests Francis Bacon fuel resources future implications important industrial interest land LECTURE Convocation Hall look ahead matter mind mineral fuels National Research Council natural resources non-renewable resources Ontario optimists organic resources petroleum philosophy of engineering physical power in Nature power stations production profession of engineering professional question quoted raw materials recent renewable resources Report Resources for Tomorrow resources of nature responsible Rideau Canal Shand Dam significant Sixth Lecturer SIXTH WALLBERG LECTURE Soil erosion sources of power speak speaker statement steward suggest supply talk about inexhaust things thought Tomorrow THE ENGINEER'S tonight treasure house United University of Toronto venture vital WALLBERG LECTURE Convocation waste water polluted words Yonge Street