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1691 in science
The year
1691
in
science
and
technology
involved some significant
events
.
Astronomy
The
Hartmann Mask
is invented by
Christopher Scheiner
.
Mathematics
Gottfried Leibniz
discovers
the technique of
separation of variables
for
ordinary differential equations
.
Michel Rolle
invents
Rolle's theorem
.
Medicine
Anton Nuck's
Adenographia curiosa et uteri foeminei anatome nova
is
published
at
Leiden
, including a description of the
canal of Nuck
and a
demonstration
that the
embryo
is
derived
from the
ovary
and not the
sperm
.
Technology
Edmond Halley
devises a
diving bell
.
In
music
, the "equal temperament scale" used in today's music is developed by
organist
Andreas Werckmeister
.
Births
November 18
–
Mårten Triewald
,
Swedish
mechanical engineer
Deaths
January 17
–
Richard Lower
,
English
physician
who performed the
first direct
blood transfusion
December 31
–
Robert Boyle
, British
chemist