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Page "Celestial navigation" ¶ 17
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If and one
If you take the one, you'd better take both ''.
`` If you can conveniently let me have twenty dollars '', he wrote one friend in 1791 when he was Secretary of the Treasury.
If one dancer slaps another, the victim may do a pirouette, sit down, or offer his assailant a fork and spoon.
If a child had a single drop of Negro blood, he would revert to the ancestral line which, except as slaves under a superior race, had not made one step of progress in 3,000 years.
If we examine the three types of change from the point of view of their internal structure we find an additional profound difference between the third and the first two, one that accounts for the notable difference between the responses they evoke.
If in any one calculation Ptolemy had had to invoke 83 epicycles all at once, while Copernicus never required more than one third this number, then ( in the sense obvious to Margenau ) Ptolemaic astronomy would be simpler than Copernican.
If within one year you can make a success out of the American, you can practically name your own salary thereafter.
If it is not one of his best books, it can only be considered unsatisfactory when compared with his own Garibaldi.
If one finger is raised against the authorities, all our moral power will vanish.
If any one of them has any power to veto the Secretary General's decisions the nature of the organization will have changed.
If he can bounce back with one of those 25 home runs years, the club will have to be better off offensively.
If they do meet and recognize one another, slap backs and embrace, the moment soon is done.
If either one ever started making promises, there is no telling where the promises would end.
If one follows the reports of the Congress, one finds that there still seems considerable uncertainty in the minds of the leaders themselves about what exactly to do in this matter.
Somebody, got to be somebody If I don't put my two cents in soon, somebody else will I know they're waitin only for one thing: for the bastards what done it to be nailed.
If we had, then one of us would have had to go instead.
`` If I catch you one more time down here without stockings '' --
If, for some reason such as economy, we are not going to develop aircraft nuclear propulsion with a sense of national urgency, then we should turn our effort to developing jet engines with a thrust-to-weight ratio of 12 or 15 to one.
If you don't own a planer and don't want to buy one, it's well worth renting.
Note: If 1/2-inch panel board is used inside and out, or 5/8-inch one side and 3/8-inch the other, and 1/8-inch glass is used, stock lumber in Af, Af, and Af can be used in making the glass panels.
If you have a full-time doctor now, can he be replaced with a part-time doctor or one who serves on a fee-per-case basis only??
If you use one of the new year-round cooling system fluids such as `` Dowguard '' be sure to check it.
If you run into excess plug fouling on one truck, check to be sure that the rig has a thermostat.

If and can
If any of us miss, they can pick up the pieces.
If we cannot stop warfare in our own economic system, how can we expect to abolish it internationally??
If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.
If Mrs. Wright doesn't accept the terms in the morning, I'll go either to Tokyo or to Holland, to do what I can.
If there be a disinterested patriot in America, 'tis General Washington, and his bravery, none can question ''.
`` If you can firmly make the good knight sure to pleasure our Corporation '', Sturley wrote, `` besides that ordinary allowance for your diet you shall have 20 for recompence ''.
If man is actually the product of his environment and if science can discover the laws of human nature and the ways in which environment determines what people do, then someone -- a someone probably standing outside traditional systems of values -- can turn around and develop completely efficient means for controlling people.
If the manner of his passing moves the nations to act in the spirit of his dedication the sore issues that plague the world can yet be resolved with reason and justice.
If they do as well as they did in 1960 there can be no complaint.
If it will simply delay the debates until the qualifications are closed next spring, and then carry all the candidates on a tour of debates, it can provide a service to the state.
`` If the day should ever come that foreign invaders swarm ashore along the Gulf Coast '', the account reads, `` they can count on heavy opposition from a group of commando-trained telephone employees -- all girls.
If we cluster together, the redcoats can make an advantage out of it, but there's not a blessed thing they can do with two or three of us except chase us, and we can outrun them ''.
If there is anything which we can do in the executive branch of the Government to speed up the processes by which we come to decisions on matters on which we must act promptly, that in itself would be a major contribution to the conduct of our affairs.
If the target can change its position significantly during the 30 minutes the missile is in the air on its way, the probability of the missile destroying the target is drastically reduced.
If your state has no provisions for the numbering of pleasure boats, you must apply for a number from the U.S. Coast Guard for any kind of boat with mechanical propulsion rated at more than 10 horsepower before it can be used on Federal waterways.
If there are any major restrictions, they usually can be obtained in printed form.

If and accurately
If a ray tracing is then made as if a light wave ( as understood in classical physics ) is wide enough to take both paths, then that ray tracing will accurately predict the appearance of maxima and minima on the detector screen when many particles pass through the apparatus and gradually " paint " the expected interference pattern.
If the laws of physics agree more accurately with observations in a model with rotation than without it, we are inclined to select the best-fit value for rotation, subject to all other pertinent experimental observations.
If necessary using the first artillery fire for cover this process would be repeated until guns were close enough to be laid accurately to make a breach in the fortifications.
If someone thinks the proposition, " There is a tree in the yard ," then that proposition accurately pictures the world if and only if there is a tree in the yard.
If there is no tree in the yard, the proposition does not accurately picture the world.
If the prose sketch which Wagner mentions in Mein Leben was accurately dated ( and most of Wagner ’ s surviving papers are dated ), it could settle the issue once and for all, but unfortunately it has not survived.
If not accurately predicted at the planning stage, this extra traffic may lead to the new road becoming congested sooner than anticipated.
If the area is sufficiently large, the polygon will not close no matter how accurately measured if it is calculated on a plane.
If the position of the earth in its orbit around the sun is reckoned with respect to the equinox, the point at which the orbit crosses the celestial equator, then its dates accurately indicate the seasons, that is, they are synchronized with the declination of the sun.
If a stop is added, the length of the line can also be accurately controlled.
If its ontology is accused, the pragmatic answer is " read the minutes of the meeting ", both because the strong social constructionism is busy creating programs, and because sharing a reality accurately and completely is futile.
If change is not needed, the event could more accurately be described as a failure or incident.
If, as in this case, we can find a unique such invariant measure, that solves the problem of formulating accurately what ' random line ' means ; and expectations become integrals with respect to that measure.
If, on the other hand, music plays in the background but cannot be heard by the film's characters, it is termed non-diegetic or, more accurately, extra-diegetic.
If the government can accurately gauge the social cost, the tax could equalize the marginal private cost and the marginal social cost.
If one has a shorter chain or estimates more accurately, the overall estimate will be correspondingly better.
If cash flow-derived value — which excludes market judgment as to default risk but may also more accurately reflect ' actual ' value if the market is sufficiently distressed — is used ( rather than sale value ), the size of market-value adjustments under the accounting standard would typically be reduced.
If 1967 has been the first year of a relative decline with however many highlights, 1973 ( and more accurately his " after-Dallas 1972 ") has been the real start of Rosewall's true decline: admittedly he was still one of the best players but not one fighting for the first place.
If change is not needed, the event could more accurately be described as a failure.
Nickell suggests, " If God deigns to use the English language, should we not expect it to be rendered accurately?
If provoked, some horned lizards can build up blood pressure in regions behind their eyes and accurately squirt their blood at attacking predators, which will deter Canids from continuing their attack.
If you could accurately mark out a distance on the ground, or in practice, an angle in the sky, timing the passage over that distance would give you all the information needed to time the drop.
If a trans-septal puncture is made during right heart catheterization, however, the pressure gradient can accurately quantify the severity of mitral stenosis.
If landscape reconstruction and preservation, in particular, is a goal of an archaeological research project, pollen and soil analysis can aide in landscape archaeology to accurately interpret and reconstruct landscapes of the past ( Schoenwetter pg 278 ).

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