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Page 40 - ... of miles, and if by some means the whole of the solar radiation could be concentrated upon this column, it would be melted in one second of time, and in between seven and eight seconds more would be dissipated in vapor. To maintain such a development of heat by combustion would require the hourly burning of a layer of the best anthracite coal from...
Page 349 - Extract from Preface. SIGHT : An Exposition of the Principles of Monocular and Binocular Vision. By JOSEPH LE CONTE, LL. D., author of "Elements of Geology"; "Religion and Science"; and Professor of Geology and Natural History in the University of California.
Page 258 - To-day it is applied to the summation of the atmospheric conditions as recorded for a long period of time; or, in other words, it is the totality of weather, while " weather " is the physical condition of the atmosphere at a given time, or during a limited period.
Page 258 - By climate we mean the sum total of the meteorological phenomena that characterize the average condition of the atmosphere at any one place on the earth's surface. That which we call weather is only one phase in the succession of phenomena whose complete cycle, recurring with greater or less uniformity every year, constitutes the climate of any locality.
Page 49 - In general, the plane determined by an incident ray and the normal to the surface at the point of incidence is called the plane of incidence.
Page 269 - To this interrogatory reply must be made that the ideal climate as regards equability of temperature and absence of moisture does not exist in the United States, but that the nearest approach to it will be found in the great Southwest. The temperature of the Southwest is not equable in the sense of having an extremely small daily range, but it possesses the quality of annual uniformity in a greater degree than will generally be found elsewhere except on the seacoast, and there the humidity is great....
Page 14 - Law. — The temperature remaining the same, the volume of a given quantity of gas varies inversely as the pressure.
Page 269 - ... the greater the range of temperature from day to night. While a high summer temperature is characteristic of the Southwest and other portions of the Rocky Mountain Plateau, it is a fact that the sensation of heat as experienced by animal life there is not accurately measured by the ordinary thermometer. The sensation of temperature which we usually refer to the condition of the atmosphere depends not only on the temperature of the air, but also on its dryness and the velocity of the wind.
Page 1 - The author states that his object in writing this book was " to provide, so far as possible, the young men entering the service of the TJ. S. Weather Bureau with a comprehensive introduction to modern meteorology. But to meet their needs in this particular Is to provide equally well for all others who are beginning seriously this important science.