On the other hand it is not necessary to reset the telescope after each reversal of the segments.4 When Bessel ordered the Konigsberg heliometer, he was anxious to have the segments made to move in cylindrical slides, of which the radius should be equal to the focal length of the object-glass.
The anticipated reversal was duly found by Chree, the critical point corresponding, under the moderate stress employed, to a field of about 120 units.
For shallow water greater precision and certainty are obtained by using a lever actuated by a weight slipped down the line to cause the reversal, as in the patterns of Rung, Mill and others.
In his later book, Dioptrice (1611), he fully discusses refraction and the use of lenses, showing the action of the double convex lens in the camera obscura, with the principles which regulate its use and the reason of the reversal of the image.
The reign began well, it is true, notably in the reversal of the narrow ecclesiastical policy of Frederick William III.
Thomson, who, from the results of Bidwell's observations on the magnetic deformation of cobalt, was led to expect that that metal would exhibit a reversal opposite in character to the effect observed in iron.
On the other hand he speaks of the great anti-Teuton emperor Justinian, and of his reversal of the German conquests of the 5th century, in language which would certainly have grated on the ears of Totila and his heroes.
His dispute with George Onslow, member for Surrey, who at first supported and then threw over Wilkes for place, culminated in a civil action, ultimately decided, after the reversal of a verdict which had been obtained through the charge of Lord Mansfield, in Horne's favour, and in the loss by his opponent of his seat in parliament.
Risner, who died in 1580, also in his Opticae (1606) very clearly explained the reversal of the images of the simple camera obscura.
In the retrial of the General Fitz John Porter case he obtained a reversal of the decision of the original courtmartial.
Peter's foreign policy was the absolute reversal of the policy of his predecessor.
For the most part, the Arab tribes have been reluctant to avail themselves of their new powers, and where they have done so the hasty reversal of the traditions of centuries has proved demoralizing to the natives, without any sufficient equivalent in the way of healthy French colonization.
In 1840 brought a pacific reversal of the Prussian policy, sometimes judged more benevolent than wise.
The interval between this war and the Seven Years' War (1756) saw that great reversal of alliances which is sometimes called the "Diplomatic Revolution"; whereby France repudiated the alliance of Frederick the Great and joined hands with her old enemy Austria.
Charles's subsequent endeavour, in stress of circumstances, to gain a friend by dividing his Polish conquests with the aspiring elector of Brandenburg was a reversal of his original policy and only resulted in the establishment on the southern confines of Sweden of a new rival almost as dangerous as Denmark, her ancient rival in the west.
It is nearly allied to the larger Asiatic buffaloes, showing the same reversal of the direction of the hair on the back.
The shahs grandmother, by feigning herself sick and dependent upon wine only for cure, obtained reversal of the edict.
Pombal's dismissal, brought about by the influence of the queen-mother Mariana Victoria, Maria L, did not involve an immediate reversal of his policy.
The accession of his widow Salome Alexandra (78-69) witnessed a complete reversal of the policy pursued by Jannaeus, for she chose to rule in accordance with the ideals of the Pharisees.
In addition to the bacterial actions which result in the oxidization of ammonia to nitrous acid, and of the latter to nitric acid, the reversal of such processes is also brought about by numerous bacteria in the soil, rivers, &c. Warington showed some time ago that many species are able to reduce nitrates to nitrites, and such reduction is now known to occur very widely in nature.
A few of the lines show a double reversal, the dark absorption line being greatly increased in breadth and showing a bright emission line in its centre.
These irregularities induced the House of Lords to reverse the judgment, and its reversal did much to prevent mischief.
Hence for sending both a dot and a dash, reverse currents of short duration are sent through the line, but the interval between the reversal is three times as great for the dash as for the dot.
He was not released until the accession of Mary, parliament restoring his dukedom on his petition for reversal of the attainder.
It was reserved for the third Duma, after the revolution, to begin the reversal of this process.'
When in July of that year Rockingham gave place to Chatham, Conway retained his office; and when Chatham became incapacitated by illness he tamely acquiesced in Townshend's reversal of the American policy which he himself had so actively furthered in the previous administration.
Triforis, Physa, Clausilia are examples of sinistral Gastropods, but reversal also occurs as an individual variation among forms normally dextral.
Burr.- p T 9 pl.y ped.g: reversal of the cleavage planes in sinistral as compared with dextral forms. The facts, however, strongly suggest that the original cause of the torsion was the weight of the exogastric shell and visceral hump, which in an animal creeping on its ventral surface necessarily fell over to one side.
The year 461 marks the reversal of Athenian policy at home and abroad.
After a few repetitions of the reversal, the process becomes strictly cyclic, the upward and downward curves always following with precision the paths indicated in the figure.
Hopkinson pointed out that the greatest dissipation of energy which can be caused by a to-and-fro reversal is approximately represented by Coercive force X maximum induction fir.
2 Then came the Kaffir War of 1834-1835, the reversal by the home government of the statesmanlike settlement of Sir Benjamin D'Urban, and the refusal of any compensation to the sufferers from the war, whose losses amounted to some £500,000.
This reversal of policy led to a Christian persecution and a new war with Rome.
Not only do the cases, so far as they are known, support Bacon's plea of innocence, but it is remarkable that no attempt at a reversal of any of his numerous decrees appears to have been successful.
If we imagine the current in the conductor to be instantaneously reversed in direction, the magnetic force surrounding it would not be instantly reversed everywhere in direction, but the reversal would be propagated outwards through space with a certain velocity which Maxwell showed was inversely as the square root of the product of the magnetic permeability and the dielectric constant or specific inductive capacity of the medium.
The representatives of France and Great Britain made every effort to secure a reversal of this fatal step; but, while they were threatening and promising, Russia was acting, and on the 10th of February a Russian squadron entered the Bosporus.
One geometrical interpretation of the negative sign of algebra was early seen to be mere reversal of direction along a line.
For the reversal of either factor must, by (b), change its sign.
The crown after the Mutiny; and its reversal has led to the native princes being amongst the most loyal subjects of the British government.
It opens with a startling reversal of the common estimates of happiness and misery.
Manteuffel and his policy were associated in the regents mind with the humiliation of Olmtitz, and the dismissal of the ministry symbolized the reversal of this policy.
It may also be thought of as retributive, as a reversal of present conditions so that the miserable are comforted, and the prosperous laid low, or as a reward or punishment for good or evil desert here.