MIR ( submersible ) | MIR submersible, one of the two vehicles that were used in Arktika 2007 | the first ever manned descent to the seabed under the North Pole

Though the first submersible vehicles were tools for exploring under water, it did not take long for inventors to recognize their military potential.

David Bushnell, the developer of the first practical military submersible, was born 1742 in Old Saybrook, now Westbrook.

Ballard's first dive in a submersible was in the Ben Franklin ( PX-15 ) in 1969 off the coast of Florida during a Woods Hole Oceanographic Institution expedition.

It is good practice to use two non-freezing regulators arranged as follows: primary first stage with primary second stage, BCD inflation hose, and submersible pressure gauge ( SPG ); secondary first stage with secondary second stage ( octopus ), dry suit inflation hose, and SPG, although only one SPG is needed for a single cylinder or manifolded twins.

The Turtle ( also called the American Turtle ) was the world's first submersible with a documented record of use in combat.

On September 7, in the first documented case of submarine warfare, Sergeant Ezra Lee, volunteered to pilot the submersible Turtle to the Eagle and attach explosives to the ship ; the submersible's drill struck an iron band it could not penetrate, and Lee was unable to attach the required explosives.

On August 28, 1962, at Villefranche-sur-Mer on the Mediterranean Sea, Link inaugurated his " Man in Sea " project by spending eight hours at a depth of sixty feet in his submersible decompression chamber ( SDC ), becoming the first diver to be completely saturated with a mixture of oxygen and helium ( Heliox ) while breathing underwater.

In March 1967, Link launched Deep Diver, the first small submersible designed for lockout diving, allowing divers to leave and enter the craft while underwater.

The submarine has a long history in the United States, beginning with the Turtle, the world's first submersible with a documented record of use in combat.

A whale fall was first observed by marine biologists led by University of Hawaii oceanographer Craig Smith in 1987, discovered accidentally by the submersible Alvin using scanning sonar at in the Catalina Basin.

He was the first person to reach the deepest spot in Lake Superior, a depth of 1333 feet ( 733 feet below sea level ), which is also the lowest point in the United States, on July 30, 1985 while aboard the R / V Seward Johnson with the Johnson Sea Link-II submersible.

He dropped a man with the first bullet.

Gracias '', I hollered, my first long swallow filling me with confidence and immediately doubling the size of my Spanish vocabulary.

School began in August, the hottest part of the year, and for the first few days Miss Langford was very lenient with the children, letting them play a lot and the new ones sort of get acquainted with one another.

at first gratingly, caught by grains of corn -- then with a clash into its slot.

Why, in the first place, call himself a liberal if he is against laissez-faire and favors an authoritarian central government with womb-to-tomb controls over everybody??

In 1961 the first important legislative victory of the Kennedy Administration came when the principle of national responsibility for local economic distress won out over a `` state's-responsibility '' proposal -- provision was made for payment for unemployment relief by nation-wide taxation rather than by a levy only on those states afflicted with manpower surplus.

John Adams fashioned much of pre-Revolutionary radical ideology, wrote the constitution of his home state of Massachusetts, negotiated, with Franklin and Jay, the peace with Britain and served as our first Vice President and our second President.

The active sponsor of Jefferson's measure for religious liberty in Virginia, Madison played the most influential single role in the drafting of the Constitution and in securing its ratification in Virginia, founded the first political party in American history, and, as Jefferson's Secretary of State and his successor in the Presidency, guided the nation through the troubled years of our second war with Britain.

His collaboration with Washington, begun when he was the general's aide during the Revolution, was resumed when he entered the first Cabinet as Secretary of the Treasury.

His first inaugural address speaks of `` my country whose voice I can never hear but with veneration and love ''.

This and other fears of the solar system have disappeared gradually, first, with the Ptolemaic system and its built-in concept of periodicity and then, more firmly, with the Newtonian innovation of an universal force that could account quantitatively for both terrestial and celestial motions.

The first sentence, with its platitudinous irony, announces an emblematic intent: `` The way to the churchyard ran along beside the highroad, ran beside it all the way to the end ; ;

The first series of Sherlock Holmes adventures ends with Holmes and Moriarty grappling together on the edge of a cliff.

So we must first analyze our present institutions with respect to the effect of each on man's major needs.

So it is that we relive his opening statement in the first television address with the dramatic immediacy of the present.

and it is surely clear that the first of these is the result of the way in which the individual's command of language interacts with the other two.

This included Mamma, jolly, generous, and pretty, with whom they all fell in love, just as Papa had first fallen in love with her Mamma before he chose her ; ;

And just as `` Laurie '' Lawrence was first attracted to bright Jo March, who found him immature by her high standards, and then had to content himself with her younger sister Amy, so Joe Jastrow, who had also been writing Henrietta before he came to Johns Hopkins, had to content himself with her younger sister, pretty Rachel.

At this point Mrs. Frances Cupply, one of Wright's handsome daughters by his first wife, came from the house and tried to calm Miriam as she tore down a no visitors sign and smashed the glass pane on another sign with a rock.

Next day a ship arrived with an English pilot, his leadsman, an English youth, and the first Hindu the Judsons and Newells had ever seen.

* 1457 BC – Likely date of the Battle of Megiddo between Thutmose III and a large Canaanite coalition under the King of Kadesh, the first battle to have been recorded in what is accepted as relatively reliable detail.

The first reliable reference to Laozi is his " biography " in Shiji ( 63, tr.

Isidro Sepúlveda, William Jackson and George Hills explicitly refute it ( Sepúlveda points out that if such a fact had actually happened, it would have caused a big crisis in the Alliance supporting the Archduke Charles ; George Hills explains that the story was first accounted by the Marquis of San Felipe, who wrote his book " Comentarios de la guerra de España e historia de su rey Phelipe V el animoso " in 1725, more than twenty years after the fact ; the marquis was not an eye-witness and cannot be considered as a reliable source for the facts that took place in Gibraltar in 1704.

With his solar and lunar theories and his trigonometry, he may have been the first to develop a reliable method to predict solar eclipses.

Krupp was the first company to patent a seamless, reliable and strong enough railroad tire for rail freight.

* Eratosthenes ( 276194 BC ), who made the first known reliable estimation of the Earth's size.

However, further studies by Felix Bloch with Arnold Nordsieck, and Victor Weisskopf, in 1937 and 1939, revealed that such computations were reliable only at a first order of perturbation theory, a problem already pointed out by Robert Oppenheimer.

The automatic revolver was popular when it first came out, but was quickly superseded by the creation of reliable, inexpensive semi-automatic pistols.

Another of the most common objections to reliabilism, made first to Goldman's reliable process theory of knowledge and later to other reliabilist theories, is the so-called generality problem.

The game's first known-to-be reliable mention is in 21 August 1886 edition of The Saturday Review.

The first reliable scholarly reference to rockets in China occurs in the Ko Chieh Ching Yuan ( The Mirror of Research ), which states that in 998 AD a man named Tang Fu invented a rocket of a new kind having an iron head.

The next governor, Isaac Pyke ( 1731 – 1738 ), had a tyrannical reputation but successfully extended tree plantations, improved fortifications and transformed the garrison and militia into a reliable force for the first time.

Devices using semiconductors at first were constructed based on empirical knowledge, but semiconductor theory provided a guide to construction of more capable and reliable devices.

This equipment was the first reliable regulator to be mass produced and was acquired as a standard breathing apparatus by the French Imperial Navy since 1865.

Shen Lin and Brian Kernighan first published their method in 1972, and it was the most reliable heuristic for solving travelling salesman problems for nearly two decades.

* The first reliable census in India is taken.

* November 8 – Bernhard Zondek German-born Israeli gynecologist, developer of first reliable pregnancy test ( b. 1891 )

* July 29 – Bernhard Zondek German-born Israeli gynecologist, developer of first reliable pregnancy test ( d. 1966 )

This battle involves the military strategy of the general Sun Bin ( descendent of Sun Tzu ), and is the first battle in recorded history to give a reliable account of the handheld crossbow with trigger mechanism.

A Chinese alchemical text from 492 noted that saltpeter gave off a purple flame when ignited, providing for the first time a practical and reliable means of distinguishing it from other inorganic salts, making it possible to evaluate and compare purification techniques.

Other reliable scholars are convinced that an even later date, perhaps even the last decade of the first century CE right up to the turn of the century ( i. e. 90-100 ) is applicable.

CYCLADES was the first network to make the hosts responsible for the reliable delivery of data, rather than the network itself, using unreliable datagrams and associated end-to-end protocol mechanisms.

But Mosaic was the first browser written and supported by a team of full-time programmers, which was reliable and easy enough for novices to install, and the inline graphics proved immensely appealing.

Although the Xia is an important element in early Chinese history, reliable information on the history of China before 13th century BC can only come from archaeological evidence since China's first established written system on a durable medium, the oracle bone script, did not exist until then.