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acromático
catalão
acromàtic
Having no hue.
chromatic
gray
silver
grey
jet
ebony
neutral
snowy
silvery
charcoal
colorless
português
acromático
1
My father possessed a very excellent
achromatic
spy-glass of 2 inches diameter.
2
One image is quite
achromatic
,
the other shows a little colour.
3
Now what do you see, Lady Constantine?' He levelled the
achromatic
at Sirius.
4
The following are some of his more important
achromatic
telescopes.
5
I have sometimes found this cleft an easy object with a 4 inch
achromatic
.
6
For an
achromatic
dispersive lens the converse must be adopted.
7
Both crater-row and cleft are easy objects in a 4 inch
achromatic
under morning illumination.
8
Then there was the shoemaker and teacher, and eventually the first-rate maker of
achromatic
instruments.
9
The negative eye-piece, being
achromatic
,
is commonly employed in all observations requiring distinct vision only.
10
The eye-piece consists of a single
achromatic
lens, whose focal length is about two inches.
11
The optical part of the instrument consist of the small set of
achromatic
lenses already described.
12
Mr Bayly and I observed with the large
achromatic
telescopes, and Mr King with a reflector.
13
The attraction-spheres and
achromatic
spindle, although present, are not depicted in IV., V., VI., and VII.
14
It was 8 inches in diameter; focal length, 150 feet; not
achromatic
.
15
The absence of this error is termed achromatism, and an optical system so corrected is termed
achromatic
.
16
The lights often appear
achromatic
near threshold.
achromatic
achromatic telescope
achromatic metasurfaces
achromatic object
achromatic chaos
achromatic clearness
português
acromático
catalão
acromàtic