-------------------------------------------+-----------+-------- | half a | Nine At the Distance of | Foot | Feet -------------------------------------------+-----------+-------- The breadth of the Shadow | 1/54 | 1/9 -------------------------------------------+-----------+-------- The breadth between the Middles of the | 1/38 | brightest Light of the innermost Fringes | or | on either side the Shadow | 1/39 | 7/50 -------------------------------------------+-----------+-------- The breadth between the Middles of the | | brightest Light of the middlemost Fringes| | on either side the Shadow | 1/23-1/2 | 4/17 -------------------------------------------+-----------+-------- The breadth between the Middles of the | 1/18 | brightest Light of the outmost Fringes | or | on either side the Shadow | 1/18-1/2 | 3/10 -------------------------------------------+-----------+-------- The distance between the Middles of the | | brightest Light of the first and second | | Fringes | 1/120 | 1/21 -------------------------------------------+-----------+-------- The distance between the Middles of the | | brightest Light of the second and third | | Fringes | 1/170 | 1/31 -------------------------------------------+-----------+-------- The breadth of the luminous Part (green, | | white, yellow, and red) of the first | | Fringe | 1/170 | 1/32 -------------------------------------------+-----------+-------- The breadth of the darker Space between | | the first and second Fringes | 1/240 | 1/45 -------------------------------------------+-----------+-------- The breadth of the luminous Part of the | | second Fringe | 1/290 | 1/55 -------------------------------------------+-----------+-------- The breadth of the darker Space between | | the second and third Fringes | 1/340 | 1/63 -------------------------------------------+-----------+-------- These Measures I took by letting the Shadow of the Hair, at half a Foot distance, fall so obliquely on the Scale, as to appear twelve times broader than when it fell perpendicularly on it at the same distance, and setting down in this Table the twelfth part of the Measures I then took.