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For astronomical uses, reticles could be simple crosshair designs or more elaborate designs for special purposes.
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For and astronomical
For nearby astronomical objects ( such as stars in our galaxy ) luminosity distance D < sub > L </ sub > is almost identical to the real distance to the object, because spacetime within our galaxy is almost Euclidean.
For this reason, astronomical position determination – measuring the direction of the plumbline by astronomical means – works fairly well provided an ellipsoidal model of the figure of the Earth is used.
For some lunar calendars, such as the Chinese calendar, the first day of a month is the day when an astronomical new moon occurs in a particular time zone.
For the astronomer's sextant, see Sextant ( astronomical ).
For the year ( Y ) astronomical year numbering is used, thus 1 BC is 0, 2 BC is − 1, and 4713 BC is − 4712.
For accurate astronomical work on land, it was usual to observe sidereal time rather than solar time to measure mean solar time, because the observations of ' fixed ' stars could be measured and reduced more accurately than observations of the Sun ( in spite of the need to make various small compensations, for refraction, aberration, precession, nutation and proper motion ).
For decades after the discovery of GRBs, astronomers searched for a counterpart at other wavelengths: i. e., any astronomical object in positional coincidence with a recently observed burst.
For large astronomical bodies which are near-spherical due to self-gravitation, the tidal distortion produces a slightly prolate spheroid-i. e., an axially symmetric ellipsoid that is elongated along its major axis.
: For the terms " civil sunset " and " astronomical sunset ", see Twilight # Definitions
For typical seeing, the practical resolution limits are at mirror sizes well within existing mechanical limits, at a mirror diameter equal to the astronomical seeing parameter r < sub > 0 </ sub >-about 20 cm in diameter for visible observations under good conditions.
For geographical and cartographical poles on astronomical bodies other than Earth, see Poles of astronomical bodies.
For many years, a growing problem in astronomical research ( as in other academic disciplines ) was that the number of papers published in the major astronomical journals was increasing steadily, meaning astronomers were able to read less and less of the latest research findings.
For example, spectrograph and spectroscope have basically the same meaning, and in an astronomical context metallicity and abundance are also synonymous.
For ten years he actively participated in the work of the Astronomical Society, contributing papers on the theory of astronomical instruments, the aberration of light, the differential sextant, and the convertible pendulum.
For most of its orbit it is even farther from the Sun than at present, with its aphelion estimated at 960 astronomical units ( 32 times Neptune's distance ), making it one of the most distant known objects in the Solar System other than long-period comets.
For example, the Guide Star Catalog II has entries on over 998 million distinct astronomical objects.
For example, an Earth-like planet at 1. 25 astronomical units from α Cen A ( with a revolution period of 1. 34 years ) would get Sun-like illumination from its primary, and α Cen B would appear 5. 7 to 8. 6 magnitudes dimmer (− 21. 0 to − 18. 2 ), 190 to 2700 times dimmer than α Cen A but still 2100 to 150 times brighter than the full Moon.
For placements where light pollution is of prime importance, such as an astronomical observatory parking lot, or a large city nearby an astronomical observatory, low pressure sodium is preferred.
For astronomical purposes, before 1925 a day was considered to start at noon rather than the previous midnight.
For his applications of IR detectors to astronomy, Coblentz is regarded as the founder of astronomical infrared spectroscopy.
For and uses
For display, Dr. Baum uses a portion of an Af, an airborne radar indicator, and then photographs the screen to obtain a permanent record.
For example, " aloin " is derived from Aloe vera and Aloe ferox and has important medical uses ( e. g. as a laxative and in the treatment of burns ) as well as cosmetic uses ( e. g. in skin and hair products ).
For other uses, see Attila ( disambiguation ).
For example, an aneroid barometer uses rotary position as the signal to convey pressure information.
For other uses, see Athena ( disambiguation ), Athene ( disambiguation ), Athina ( disambiguation ) and Pallas Athena ( disambiguation )
For other uses, see Abydos ( disambiguation )
: For other uses, see Alamanni ( disambiguation )
For other uses, see Acropolis ( disambiguation ).
: For other uses of this name, see Ajax ( disambiguation ).
For other uses of this name, see AIAS ( disambiguation ) and Ajax ( disambiguation ).
For other uses, see Alexander and Alexander ( Aetolian general )
For this reason, knowing whether a file uses premultiplied or straight alpha is essential to correctly process or composite it.
For other uses, see Adalbert ( disambiguation ).
For other uses, see Arabic script
For example the United States uses NTSC-M, the UK uses PAL-I, France uses SECAM-L, much of Western Europe and Australia uses PAL-B / G, most of Eastern Europe uses PAL-D / K or SECAM-D / K and so on.
: For other uses, see Affection ( disambiguation ).
For example, gzip uses DEFLATE, which typically operates with a 32768 byte window, whereas bzip2 uses a Burrows-Wheeler transform roughly 30 times bigger.
: For other uses, including other legal terms, see Barratry
* For other uses of the big dipper see Starry Plough ( disambiguation )
For and could
For although I had crossed a corner of the hall on my way to the toilet I still could not tell for sure how far to the rear the darkness extended.
For everyone involved knew that the whole valley was a powder keg, and Mitchell Barton the fuse which could send it into explosive violence.
For a moment, she could not catch her breath and then, her breath returning in short, frightened spasms, she lifted herself to her feet laboriously.
For them only a little more needed to be learned, and then all physical knowledge could be neatly sorted, packaged and put in the inventory to be drawn on for the solution of any human problem.
For by now the original cause of the quarrel, Philip's seizure of Gascony, was only one strand in the spider web of French interests that overlay all western Europe and that had been so well and closely spun that the lightest movement could set it trembling from one end to the other.
For centuries the North Atlantic nations dominated the world and as long as they did they could afford the luxury of fighting each other.
For indeed it seemed incredible that anyone could go on committing murder for ten years and not get caught at it, even in Hollywood.
For it is clear that the total number of ordinary intersections of C and Af must be even ( otherwise, starting in the interior of C, Af could not finally return to the interior ), and the center of rotation at T is the argument of the function, not a value.
For the school year, 1959-1960, the Prince Edward County ( Virginia ) Board of Supervisors voted not to provide funds for public education, and the school board therefore could provide no public education -- for white or Negro children.
For three years, since the liquor territorial conference, Torrio had, with his elastic patience, and because he knew that retaliation could cause only violent warfare and disaster to business, tolerated O'Banion's impudent double-crossing.
For two hours they drove her from one strong point to another along the side of the Reef, trying to maneuver her onto the plain where they could get a good throw.
For two years his friend and cousin, Boisbriant, remained as acting governor and could do little to stem the Anglican advance.
For a split second, Nick relaxed his grip and Poet's slippery body spun completely around before Nick could stop him, holding him now from the rear.
For if I knew the secret of letting this power in my body change directly into electricity, I could rent myself out to the electric companies and with just the power in my body I could light all the lights and run all the factories in the entire United States for some days.
For subtle swinging rhythms, I could admire intensely Mulligan's version of `` Weep '', and the fireworks went on display in `` 18 Carrots For Robert '', a sax tribute to Johnny Hodges.
For all he saw or cared to see, this could have been a town in Italy, not the outskirts of Philadelphia.
For once Cady Partlow wished Anne would yell at him so he could yell back.
For a moment he could make no sense at all of what he saw.
For the Greeks, Apollo was all the Gods in one and through the centuries he acquired different functions which could originate from different gods.
" Swift extends the metaphor to get in a few jibes at England ’ s mistreatment of Ireland, noting that " For this kind of commodity will not bear exportation, and flesh being of too tender a consistence, to admit a long continuance in salt, although perhaps I could name a country, which would be glad to eat up our whole nation without it.
For example, " You could do with a new automobile.
For some such computational process, the algorithm must be rigorously defined: specified in the way it applies in all possible circumstances that could arise.
For example, muscle weakness and decreased endurance could lead to increasing fatigue and poorer movement patterns.
0.306 seconds.