Addresses Delivered at the Triennial Celebration ..., Volumes 18-231879 |
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Page 65
... Lights . Dr. JEFFRIES said : The nearly 34,000 examinations for color blindness which I have made , and the practical study of marine and rail- road signal lights , early convinced me that something must be done to increase the amount of ...
... Lights . Dr. JEFFRIES said : The nearly 34,000 examinations for color blindness which I have made , and the practical study of marine and rail- road signal lights , early convinced me that something must be done to increase the amount of ...
Page 67
... light , we must remember that it is always a compromise between light and color . Scientists will tell you that you cannot measure against each other lights of different colors . People are apt to be deceived in this , and try to get ...
... light , we must remember that it is always a compromise between light and color . Scientists will tell you that you cannot measure against each other lights of different colors . People are apt to be deceived in this , and try to get ...
Page 82
... light- ing by the electric arc in a mill cost at a rate corresponding to gas at $ 1.11 per thousand feet . This was computed upon coal purchased at $ 6.25 per ton , and with a very large allowance for deterioration of plant . Mr ...
... light- ing by the electric arc in a mill cost at a rate corresponding to gas at $ 1.11 per thousand feet . This was computed upon coal purchased at $ 6.25 per ton , and with a very large allowance for deterioration of plant . Mr ...
Contents
SUBJECT | 4 |
Discussion on the paper presented at | 11 |
A WELLINGTON | 55 |
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acid alizarine amount angle aniline apparatus ARTS was held boiler Boston bridge building canal cent channel cholera circuit color columns connected construction cost cotton cylinder deflection diameter dynamometer Edward Atkinson effect electric engine experiments feet fibre fire glass harbor heat inches increased Institute instrument introduced invention iron Komotau lactic acid lamps length light load machine manufacture material measure meeting metal method miles mill minutes Mystic River naphtha Nicaragua obtained pass pintle pipe plates pounds practical present President pressure produced Prof Professor Rogers pulley pump railway signals rest revolutions per minute River roof Sectional area sewage sewers shown side signal SOCIETY OF ARTS sprinklers square inch steam steam engine steel strength surface temperature tests tion train tube upper harbor valve vessel vibration weight WHITE OAK wire yellow pine