. The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material. FIGURE 2. SHOWING CONVERGING MERIDIANS FIGURE 1. HEMISPHERE globe and a flat map of the world; it wouldbe well, also, to present a diagram of a hemi-sphere; better than the ordinaiy representa-tion of a hemisi^here as shown in Fig. 1 of time represent the passing under the sunwould be a diagram, such as Fig. 2, showing of 360° of space in the revolution of thethe north or south pole so that the entire 360° earth. That once understood, i
. The American educator; completely remodelled and rewritten from original text of the New practical reference library, with new plans and additional material. FIGURE 2. SHOWING CONVERGING MERIDIANS FIGURE 1. HEMISPHERE globe and a flat map of the world; it wouldbe well, also, to present a diagram of a hemi-sphere; better than the ordinaiy representa-tion of a hemisi^here as shown in Fig. 1 of time represent the passing under the sunwould be a diagram, such as Fig. 2, showing of 360° of space in the revolution of thethe north or south pole so that the entire 360° earth. That once understood, it is easy toof the circle can be shown. show that 15 of these degrees pass under the. COMPARATIVE TIME, WHEN NOON IN CHICAGO LONGITUDE AND TIME 2165 LONGITUDE AND TIME sun in 1 hour of time, and from that, theother subdivisions are explained withoutdifficulty. Have a pupil stand facing north withhands outstretched toward the east and it is noon directly over his head, ask himif it is earlier or later than noon in a cer-tain city some hundreds of miles east orwest. Then follow with easy problems re-lating to places whose location the classfairly well understands. Ask them to tellyou how many hours apart in time the cityA and the city B are, if one is 30° E. ofyou and one 15° W. You can continuesuch problems until you have practicallymade the circuit of the globe. (See map,page 2163.) The Given Meridian. Thus far we havenot developed the fact that all men mustagree upon a certain meridian from whichto reckon longitude east and west on all theearths surface. In our investigations abovewe have based all questions and computa-tions upon the meridian ranning north
Size: 1985px × 1259px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhughesja, bookcentury1900, bookdecade1910, bookyear1919
