- 1760s, but it is at best
uncertain (and
arguably improbable?) that
split bifocal lenses had a
famous gentleman inventor.
Since many
inventions are developed...
- in his
influential PhD thesis. It is
sometimes also
referred to as the "
bifocal tensor". As a
tensor it is a two-point
tensor in that it is a bilinear...
- The
first Varilux lenses'
surface structure was
however still close to a
bifocal lens, with an upper, aberration-free half of the
surface for far vision...
-
Progressive bifocal chorioretinal atrophy, also
known for its
abbreviations PBCRA or ****B, is a rare,
slowly progressive,
autosomal dominant syndrome...
-
Thermonectus marmoratus have
incredibly complex eyes that
resemble a camera's
bifocal capabilities. The
beetle has a
total of 12 eyes (six eyes on
either side...
- Bernadette's
structures — the
fictitious Twenty-Mile
House and
Beeber Bifocal House — were
compared to the
first two of 18
visions of
Bernadette Soubirous...
-
apart a
section of
about 15
pages to
discuss what he had
called bifocal ellipses. A
bifocal oval was
defined there as the
locus of a
point P
which moves...
- inventor.
Among his many
creations were the
lightning rod,
Franklin stove,
bifocal gl****es and the
flexible urinary catheter. He
never patented his inventions;...
- and a
giant coca leaf protest. In 2007, with Eric Walters,
Ellis wrote Bifocal, a
novel about racism and
terrorists in Canada. In 2008,
Ellis published...
-
evidence of
effectiveness of
bifocal lenses and
recommends it as the
method for "myopia control". In some studies,
bifocal and
progressive lenses have...
