. Sun dials and roses of yesterday; garden delights which are here displayed in every truth and are moreover regarded as emblems . iece of board half an inch thick G B ^ o / V 00° ^ / / y^^ o R ^\ .,^ ^^^^ \ A B. FFigure 4. B and six inches shape the gnomon draw lines on Figure 4, from corner to corner, like AB and CD which make E the centre. Then draw the line GF passing through E^ mak-ing this line parallel to lines AC and BD. Of course the angle CAF is a right angle of 90 degrees, and the line AE^ being half of it, makes EAF an angle of 45 degrees. It should be easy to find other
. Sun dials and roses of yesterday; garden delights which are here displayed in every truth and are moreover regarded as emblems . iece of board half an inch thick G B ^ o / V 00° ^ / / y^^ o R ^\ .,^ ^^^^ \ A B. FFigure 4. B and six inches shape the gnomon draw lines on Figure 4, from corner to corner, like AB and CD which make E the centre. Then draw the line GF passing through E^ mak-ing this line parallel to lines AC and BD. Of course the angle CAF is a right angle of 90 degrees, and the line AE^ being half of it, makes EAF an angle of 45 degrees. It should be easy to find other angles by dividing these spaces equally. A very easy way is to divide it into divi- / sions of 100 and these 00 so „ _y^\ subdivide into 50, and so on as shown in Fig-ure 5. Let us make a gno-I mon for Tuskegee, Ala-bama. The latitude ofTuskegee is about 32Idegrees. The dotted line ^ ^ HI is drawn on the an- Figure 5. i r 1 j j ^ gle or 32^ degrees, and the figure Hiy forms the proper shape for a gnomon for a sun-dial to be used at Tuskegee. Now turn to Figure 6. On the large square of board find as nearly as possible the. loo Sun-dials and Roses of Yesterday centre and draw from it three semicircles marked £, i^, andG. The outer circle, £, is to have a radius of 6 inches,the next circle, F^ a radius of 5| inches, and the circle G aradius of 5 inches. Then draw three similar semicircles
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsundial, bookyear1902
