Russian
угловой диаметр Portuguese
diâmetro angular Catalan
diàmetre angular Spanish
diámetro aparente 
Angular measurement describing how large a sphere or circle appears from a given point of view.
1
They were of equal size: perhaps twice the angular diameter of the full Moon as seen from Earth.
2
The angular diameter, as in the case of Betelgeuse, is in remarkably close agreement with the diameter predicted from theory.
3
Interferometer measures, now in progress on Mount Wilson, indicate that its angular diameter is about 0.020 of a second.
4
This cone, in fact, is very narrow, the angular diameter of the moon is so small compared to the diameter of the orb of day.
5
Its angular diameter of 0.040 of a second would thus correspond to a linear diameter of about 400 million miles.
1
Since its distance from the camera changes, its angular size also changes.
2
The size can be found using the angular size and the distance.
3
How do you display the angular size at different points on the field?
4
It isn't too difficult measure the angular size with a lens.
5
For the moon, I can write the following expression for the angular size.
1
It must be noticed that the sun's apparent diameter is not always the same.
2
The variation of the apparent diameter corresponds (inversely) to the variation of distance.
3
Mars has been steadily approaching, tripling its apparent diameter as seen through telescopes since January.
4
They again became silent, watching Jupiter, an enormous moon some seven degrees in apparent diameter.
5
This cloud was nearly spherical in form, with an apparent diameter of about a thousand yards.
6
Moon's mean apparent diameter - 31 min.
7
Moon's maximum apparent diameter - 33 min.
8
Moon's minimum apparent diameter - 29 min.
9
Found a sensible diminution in the earth's apparent diameter, besides a material alteration in its general color and appearance.
10
While such discussions were going on, their subject gradually approached, growing larger in apparent diameter, and of a more brilliant lustre.
11
For seven or eight days we saw no material increase in its apparent diameter, and but a partial alteration in its color.
12
All that he saw in that instant was a glaring ball of electric white, three times the apparent diameter of the sun.
13
Sun apparent diameter 31 minutes 5 seconds.
14
Great decrease in the earth's apparent diameter, which now subtended from the balloon an angle of very little more than twenty-five degrees.
15
The thread is arranged on the stage so as to point towards the observer, and the apparent diameter is read off on the eyepiece scale.
16
Observed meridian altitude of sun lower limb 2 degrees 35 minutes 20 seconds, sun apparent diameter 29 degrees 20 minutes.
Portuguese
Catalan
