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Log log duplex vector (Explored)
The slide rule was developed in the 17th century, but its modern version dates from the mid-1800's. It was eventually displaced by the pocket calculator starting in the late 1960's. However, it was still used on Apollo missions in the 1970's.
Using the various scales on both sides, one could solve problems involving multiplication, division, square and cube roots, plane and hyperbolic trigonometry, logarithms, and numbers raised to a power.
This particular slide rule, the Keuffel & Esser log log duplex vector, came with a 132 page manual (http://www.mccoys-kecatalogs.com/KEManuals/4081-3_1955/4081-3_1955.pdf) and a 49 page supplemental manual www.mccoys-kecatalogs.com/KEManuals/4083-3/4083manual.pdf. If you think that camera manuals are difficult to read, try a slide rule manual.
The Sunday Challenge: Numbers
AIMG 4523
Using the various scales on both sides, one could solve problems involving multiplication, division, square and cube roots, plane and hyperbolic trigonometry, logarithms, and numbers raised to a power.
This particular slide rule, the Keuffel & Esser log log duplex vector, came with a 132 page manual (http://www.mccoys-kecatalogs.com/KEManuals/4081-3_1955/4081-3_1955.pdf) and a 49 page supplemental manual www.mccoys-kecatalogs.com/KEManuals/4083-3/4083manual.pdf. If you think that camera manuals are difficult to read, try a slide rule manual.
The Sunday Challenge: Numbers
AIMG 4523
, Jan Klimczak, , Rafael and 33 other people have particularly liked this photo
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I agree about the User instructions.
LOL
ઇઉ.¸¸.* ઇઉ.¸¸.*Amazing composition!!
Admired in:
www.ipernity.com/group/tolerance
I wonder how many of the Tech kids that we now teach, would find this easy to use?
... I am so bad in mathematical ! (:o(((((
In his time the class teacher was such a rule,
but larger and frightened us with pretending to hit us.
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