By the river Volta (which separates it from the German colony of Togoland); the southern frontier is conterminous with the northern frontier of the (British) Gold Coast colony.
The western boundary was settled by Anglo-German agreements of 1890 and 1899; it leaves the coast west of the town of Lome and proceeds in a zigzag line to where the Deine river joins the Volta; thence follows the Volta to its junction with the Daka and then the Daka up to the point where 9° N.
The chief river traversing it is the Oti, which rises in about 12° N., enters Togoland at its northeast corner, and runs with a very sinuous course south-south-west to its junction with the Volta in 7° 37' N.
For a considerable distance the left bank of the Volta itself is in German territory, but its lower course is wholly in the Gold Coast colony.
The European ferment of ideas which preceded the French Revolution expressed itself in men like Alfieri, the fierce denouncer of tyrants, Beccaria, the philosopher of criminal jurisprudence, Volta, the physicist, and numerous political economists of Tuscany.
Alessandro Volta of Pavia discovered the electric battery in the year 1800, and thus placed the means of maintaining a steady electric current in the hands of investigators, who, before that date, had been restricted to the study of the isolated electric charges given by frictional electric machines.
Wall was discovered and may be seen in the garden of the Liceo Volta, 88 ft.
Volta) is defined to be difference of potential which acting between the terminals of a resistance of one ohm sends through it a continuous current of one ampere.
In their course through Ashanti, the rivers, apart from the Volta, are navigable by canoes only.
An Ashanti force invaded Krepi, a territory beyond the Volta, and in June 1869 captured Mr Fritz A.
Volta made here his first electrical experiments.
Volta added the condenser (Phil.
When employing a Volta condensing electroscope, the following is the method of procedure: - The top of the electroscope consists of a flat, smooth plate of lacquered brass on which another plate of brass rests, separated from it by three minute fragments of glass or shellac, or a film of shellac varnish.
Volta made use of such an electroscope in his celebrated experiments (1790-1800) to prove that metals placed in contact with one another are brought to different potentials, in other words to prove the existence of so-called contact electricity.
The first extends from the date of publication of Gilbert's great treatise in 1600 to the invention by Volta of the voltaic pile and the first production of the electric current in 1799.
- We now enter upon the second period of electrical research inaugurated by the epoch-making discovery of Alessandro Volta (1745-1827).
Volta followed up these observations with rare philosophic insight and experimental skill.
Volta showed, however, that if a series of bodies of the first class, such as disks of various metals, are placed in contact, the potential difference between the first and the last is just the same as if they are immediately in contact.
Volta also gave his pile another form, the couronne des tasses (crown of cups), in which connected strips of copper and zinc were used to bridge between cups of water or dilute acid.
Volta maintained that the mere contact of metals was sufficient to produce the electrical difference of the end plates of the pile.
This discovery of Oersted, like that of Volta, stimulated philosophical investigation in a high degree.
Then he went to Rome and Naples and visited Vesuvius and Pompeii, called on Volta at Milan, spent the summer in Geneva, and returning to Rome occupied the winter with an inquiry into the composition of ancient colours.
The name was formerly applied to the coast from the Volta, in o° 40' E., to the Rio del Rey, in 8° 40' E., and included the Slave Coast, the whole delta of the Niger and a small portion of the country to the eastward.
Of the remaining rivers of the Atlantic basin the Orange, in the extreme south, brings the drainage from the Drakensberg on the opposite side of the continent, while the Kunene, Kwanza, Ogowe and Sanaga drain the west coast highlands of the southern limb; the Volta, Komoe, Bandama, Gambia and Senegal the highlands of the western limb.
Krause (north from the Gold Coast, 1886-1887) and the French Captain Binger (Senegal to Ivory Coast, 1887-1889) first defined its southern limits by revealing the unexpected northward extension of the basins of the Guinea coast streams, especially the Volta and Komoe, a fact which explained the absence of important tributaries within the Niger bend.
- Alessandro Volta (1801) showed that although a separation of the two electricities was produced by the contact of two different metals (Volta Effect), which could be detected by a sensitive electrometer, a continuous current of corresponding magnitude could not be produced in a purely metallic circuit without the interposition of a liquid, because the electromotive force at one junction was exactly balanced by an equal and opposite force at the other.
He explained this effect by supposing that the Volta contact electromotive force varied with the temperature, so that the exact balance was destroyed by unequal heating.
Seebeck found that the metals could be arranged in a Thermoelectric Series, in the order of their power when combined with any one metal, such that the power of any thermocouple p, composed of the metals A and B, was equal to the algebraic difference (p'-p") of their powers when combined with the standard metal C. The order of the metals in this series was found to be different from that in the corresponding Volta series, and to be considerably affected by variations in purity, hardness and other physical conditions.
Relation to the Volta Efect.
- It is now generally conceded that the relatively large differences of potential observable with an electrometer between metals on open circuit, as discovered by Volta, are due to the chemical affinities of the metals, and have no direct relation to thermoelectric phenomena or to the Peltier effect.
An attempt has been made to explain the Volta effect as due to the affinity of the metals for each other, but that would not account for the variation of the effect with the state of the surface, except as affecting the actual surface of contact.
ALESSANDRO VOLTA (1745-1827), Italian physicist, was born at Como on the 18th of February 1745.
In 1779 a chair of physics was founded in Pavia, and Volta was chosen to occupy it.
Miss Keller has given her account of it, and the whole matter was discussed in the first Volta Bureau Souvenir from which I quote at length:
So much appears in the Volta Bureau Souvenir.
The Black Volta, and lower down the Volta, form the northern frontier, and various tributaries of the Volta, running generally in a northerly direction, traverse the eastern portion of the country.