Examples of using Angular size in English and their translations into Portuguese
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Zoom to Angular Size.
I was ignorant of the idea of angular size.
Example: The angular size of the full moon is 0.5°.
Ctrl; Shift; Z View Zoom to Angular Size.
The angular size of the Moon is only half of a degree.
Another technique for measuring the angular size of stars is through occultation.
Select angular size for the FOV symbol in arcmin.
Charles Messier measured the coma as 2° 23' across,around four times the apparent angular size of the Moon.
By measuring its angular size in the sky, one can use simple trigonometry to determine its distance from Earth.
However, this estimate was based upon an inaccurate guess of the planet's angular size.
Select Zoom to Angular Size… from the View menu. This allows you to specify the field-of-view angle for the display, in degrees.
In both annular and total eclipses,the eclipse magnitude is the ratio of the angular sizes of the Moon to the Sun.
Enter the desired angular size for the field-of-view(FOV) symbol. You can either enter a value directly, or use the"Eyepiece" or"Camera" Tabs to compute an angular size for specific eyepieces or cameras.
Using small telescopes and the Lovell Telescope as an interferometer,they were shown to have a very small angular size.
Because the galaxy has a high surface brightness and relatively large angular size, it is an ideal target for amateur astronomy observations.
The distance at close approach varies between about 54 and about 103 million km due to the planets' elliptical orbits,which causes comparable variation in angular size.
It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres.
The distance at close approach varies between about 54 and 103 million km(34 and 64 million mi) due to the planets' elliptical orbits,which causes comparable variation in angular size.
Tycho Brahe attempted to directly measure the“bigness” of the stars in terms of angular size, which in theory meant that a star's magnitude could be determined by more than just the subjective judgment described in the above quote.
The current highest-resolution(approximately 30 μas) measurement, made at a wavelength of 1.3 mm, indicated an overall angular size for the source of 50μas.
One part of this work is the Hubble luminosity law for reflection nebulae, which makes a relationship between the angular size("R") of the nebula and the apparent magnitude("m") of the associated star: :5 log("R")-"m"+"k"where"k" is a constant that depends on the sensitivity of the measurement.
Notes[1] Also known as the Atacama Compact Array,the compact nature of the Morita Array allows ALMA to study celestial objects with a large angular size, such as molecular clouds and nearby galaxies.
Payne-Scott played a major role in the first-ever radio astronomical interferometer observation from 26 January 1946,when the sea-cliff interferometer was used to determine the position and angular size of a solar burst.
By convention, for magnifying glasses and optical microscopes, where the size of the object is a linear dimension and the apparent size is an angle,the magnification is the ratio between the apparent(angular) size as seen in the eyepiece and the angular size of the object when placed at the conventional closest distance of distinct vision: 25 cm from the eye.
It covers an area about 2.6 arcminutes on a side, about one 24-millionth of the whole sky,which is equivalent in angular size to a tennis ball at a distance of 100 metres.
In 2000-2001 several experiments, most notably BOOMERanG,found the shape of the universe to be spatially almost flat by measuring the typical angular size(the size on the sky) of the anisotropies.