Examples of using Angular size in English and their translations into Ukrainian
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It also is called the object's angular size.
Example: The angular size of the full moon is 0.5°.
However, this estimate was based upon an inaccurate guess of the planet's angular size.
Angular size, distance and object size. .
That appears to have angular size δ θ{\displaystyle\delta\theta}.
Using small telescopes and the Lovell Telescope as an interferometer,they were shown to have a small angular size.
Venus' angular size ranges from 9 to 66.7 minutes of arc.
At its closest approach, the angular size of Mars is 25 arcseconds;
With small telescopes and the Lovell Telescope as an interferometer the quasarswere shown to have a very small angular size.
Select angular size for the FOV symbol(in arcmin).
It is interesting thatGod made both of the“great lights” the same angular size- and far larger(in angle) than any of the other celestial objects.
Select Zoom to Angular Size… from the View menu. This allows you to specify the field-of-view angle for the display, in degrees.
M33's proximity to our Milky Waygalaxy causes it to appear more than twice the angular size of the full moon, and visible with a good pair of binoculars.
Each galaxy had two angular sizes, one across the longest diameter, and the other across the shortest diameter.
Of course, the estimates of the size of the observed object and the distance from it to the reactor are subjective,as there may be a question only of the angular size, not linear.
At its closest approach, the angular size of Mars is 25 arcseconds(a unit of degree);
In 2000- 2001, several experiments, most notably BOOMERanG, found the universe to bealmost spatially flat by measuring the typical angular size(the size on the sky) of the anisotropies.
And the moon and the sun have almost the same angular size(about half a degree), making total solar eclipses possible.
In 2000- 2001 several experiments, most notably BOOMERanG, found the shape of the universe to bespatially almost flat by measuring the typical angular size(the size on the sky) of the anisotropies.
So it has the same angular size as the moon1- meaning it appears the same size and covers the same portion of the sky.
T\t You can construct your own field-of-view(FOV) symbols, using the\t\t\tFOV Editor from the Settings-> FOV Symbols menu.You can set the angular size, the\t\t\tshape, and the color of your new symbols.\t\t \t.
This is possible because themoon is almost exactly the same angular size(half a degree) in the sky as the sun- it is both 400 times smaller and 400 times closer than the sun.
However, the relatively large angular size of the galaxy and the galaxy's face-on orientation make it an ideal object for professional astronomers who want to study spiral arm structure and spiral density waves.
The observers in Murray'et al. 's' experiment viewed a flat picture with two discs that subtended the same visual angle V{\displaystyle V} and formed retinal images of the same size R{\displaystyle R},but the perceived angular size V′{\displaystyle V'} of one was about 17% larger than for the other, due to differences in the background patterns for the disks.
In the 5th century CE,the Indian astronomical text Surya Siddhanta estimated the angular size of Mars as 2 arc-minutes(1/30 of a degree) and its distance to Earth as 10,433,000 km(1,296,600 yojana, where one yojana is equivalent to eight km in the Surya Siddhanta).
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.
Mathematically an object may be considered a point source if its angular size, θ{\displaystyle\theta}, is much smaller than the resolving power of the telescope: θ<< λ/ D{\displaystyle\theta<<\lambda/D}, where λ{\displaystyle\lambda} is the wavelength of light and D{\displaystyle D} is the telescope diameter.
Its apparent diameter stays almost the same, as does the moon's,i.e. their angular size is almost constant(about½°, or about half the width of your index finger held out at arm's length).
First, from observation, he knew that the moonand sun have the same angular size in the sky(about 31 arcmin(′) or½°), so their relative sizes would be proportional to their relative distances(using similar triangles).
They are often used to tie some observable quantity(such as the luminosity of a distant quasar,the redshift of a distant galaxy, or the angular size of the acoustic peaks in the CMB power spectrum) to another quantity that is not directly observable, but is more convenient for calculations(such as the comoving coordinates of the quasar, galaxy, etc.).