The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)

Page 1 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=1' data-page='1' class='cut-thumb lazyload' alt='Page 1: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/1.jpg' width='140' height='200' /> The sun-stick (the shadow stick)

1. Used to pinpoint cardinal directions (N, S, E, W)

2. Used by Eratosthenes to measure the size of the Earth (circumference)

3. Used to determine latitude of one’s location on Earth

Page 2 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=2' data-page='2' class='cut-thumb lazyload' alt='Page 2: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/2.jpg' width='140' height='200' /> Page 3 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=3' data-page='3' class='cut-thumb lazyload' alt='Page 3: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/3.jpg' width='140' height='200' /> Equinox vs Solstice

Page 4 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=4' data-page='4' class='cut-thumb lazyload' alt='Page 4: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/4.jpg' width='140' height='200' /> Page 5 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=5' data-page='5' class='cut-thumb lazyload' alt='Page 5: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/5.jpg' width='140' height='200' /> Page 6 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=6' data-page='6' class='cut-thumb lazyload' alt='Page 6: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/6.jpg' width='140' height='200' /> Page 7 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=7' data-page='7' class='cut-thumb lazyload' alt='Page 7: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/7.jpg' width='140' height='200' /> The Gnomon

1. Used by Chaldean, Babylonian and Chinese astronomers

2. Part of a sundial that casts the shadow

Page 8 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=8' data-page='8' class='cut-thumb lazyload' alt='Page 8: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/8.jpg' width='140' height='200' /> Page 9 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=9' data-page='9' class='cut-thumb lazyload' alt='Page 9: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/9.jpg' width='140' height='200' /> Page 10 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=10' data-page='10' class='cut-thumb lazyload' alt='Page 10: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/10.jpg' width='140' height='200' /> Page 11 <img data-url='document/the-sun-stick-the-shadow-stick-1-used-to-pinpoint-cardinal-directions-n.html?page=11' data-page='11' class='cut-thumb lazyload' alt='Page 11: The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W)' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader035.cupdf.com/reader035/viewer/2022062812/568162af550346895dd334ff/html5/thumbnails/11.jpg' width='140' height='200' />