Albert Goodwill Spalding ( Byron, Illinois September 2, 1850 – September 9, 1915 in Point Loma, San Diego, California ) was a professional baseball player, manager and co-founder of A. G. Spalding sporting goods company.

Francis Albert " Frank " Sinatra,, ( December 12, 1915 – May 14, 1998 ) was an American singer and film actor.

* 1915 – Albert Ghiorso, American scientist ( d. 2010 )

* 1915 – Albert Hourani, English historian ( d. 1993 )

* 1850 – Albert Spalding, American baseball player, manager, and businessman, co-founder of the Spalding Sporting Goods Company ( d. 1915 )

* 1915 – Albert Whitlock, English painter ( d. 1999 )

General relativity ( GR ) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915, with contributions by many others after 1915.

After 1915, when Albert Einstein published the theory of gravity ( general relativity ), the search for a unified field theory combining gravity with electromagnetism started again with renewed intensity.

The modern era of cosmology began with Albert Einstein's 1915 general theory of relativity, which made it possible to quantitatively predict the origin, evolution, and conclusion of the universe as a whole.

Among the most notable motion pictures was a film shot at the Eastern Front by cameraman Albert K. Dawson: The Battle and Fall of Przemysl ( 1915 ).

The issue was resolved in 1915 by Albert Einstein's new theory of general relativity, which accounted for the small discrepancy in Mercury's orbit.

In 1915, whilst living in Germany, Albert Einstein and Sigmund Freud both tested the young Messing, although the results have not survived to the current day.

* Sir Albert Charles Seward ( 1915 – 1936 )

* 1915 – Albert Einstein completes his theory of general relativity.

* 1915 — Albert Einstein publishes the General Theory of Relativity, showing that an energy density warps spacetime

In his letters home to his wife, Rupert Edward Inglis ( 1863 – 1916 ), who was a former rugby international and now a Forces Chaplain, describes passing through the town of Albert: We went through the place today ( 2 October 1915 ) where the Virgin Statue at the top of the Church was hit by a shell in January.

Following Vladimir I. Georgiev, who placed Pelasgian as an Indo-European language " between Albanian and Armenian ", Albert Joris Van Windekens ( 1915 — 1989 ) offered rules for an unattested hypothetical Indo-European Pelasgian language, selecting vocabulary for which there was no Greek etymology among the names of places, heroes, animals, plants, garments, artifacts, social organization.

And although non-Euclidean geometry had not found any applications ( Albert Einstein finished his general theory of relativity only in 1915 ), Richard already stated clairvoyantly:

Famous people that lived or died in De Panne include King Albert I and Queen Elizabeth of Belgium ( lived there during World War I ), and John Aidan Liddell, VC, who died in De Panne in August 1915.

Albert Ghiorso ( July 15, 1915 – December 26, 2010 ) was an American nuclear scientist and co-discoverer of a record 12 chemical elements on the periodic table.

Neill opposed the admission of women to Macalester, not because he did not approve of women's education, but rather because of his prior commitment to send female applicants to Macalester's sister school, Albert Lea, which closed in 1915.

** The Great War battalions: Retreat from Mons, Marne 1914 ' 18, Aisne 1914, La Bassée 1914, Ypres 1914 ' 17 ' 18, Langemarck 1914, Gheluvelt, Nonne Bosschen, Givenchy 1914, Neuve Chapelle, Aubers, Festubert 1915, Loos, Somme 1916 ' 18, Albert 1916, Bazentin, Delville Wood, Pozières, Flers-Courcelette, Morval, Thiepval, Le Transloy, Ancre Heights, Ancre 1916, Arras 1917 ' 18, Vimy 1917, Scarpe 1917 ' 18, Arleux, Pilckem, Menin Road, Polygon Wood, Poelcappelle, Passchendaele, Cambrai 1917 ' 18, St Quentin, Bapaume 1918, Rosières, Lys, Estaires, Messines 1918, Hazebrouck, Kemmel, Béthune, Scherpenberg, Soissonnais-Ourcq, Tardenois, Drocourt-Quéant, Hindenburg Line, Épéhy, St Quentin Canal, Beaurevoir, Courtrai, Selle, Sambre, France and Flanders 1914-18, Doiran 1917, Macedonia 1915-18, Egypt 1916, Gaza, Jerusalem, Tell ' Asur, Megiddo, Sharon, Damascus, Palestine 1917-18, Tigris 1916, Kut al Amara 1917, Baghdad, Mesopotamia 1915-17

The replacement chief engineer was Guy P. Henry, who introduced molybdenum steel, an improved clutch design, and presided over the six-cylinders-only policy favored by new president Albert Russel Erskine who replaced Fred Fish in July 1915.

By early summer 1915, Hilbert's interest in physics had focused on general relativity, and he invited Einstein to Göttingen to deliver a week of lectures on the subject.

During November 1915 Einstein published several papers culminating in " The Field Equations of Gravitation " ( see Einstein field equations ).

After numerous detours and false starts, his work culminated in the presentation to the Prussian Academy of Science in November 1915 of what are now known as the Einstein field equations.

Einstein himself had shown in 1915 how his theory explained the anomalous perihelion advance of the planet Mercury without any arbitrary parameters (" fudge factors ").

General relativity is a theory of gravitation developed by Einstein in the years 1907 – 1915.

In 1915, he devised the Einstein field equations which relate the curvature of spacetime with the mass, energy, and momentum within it.

In 1915, when Einstein successfully explained the apparent anomaly in Mercury's orbit, most astronomers abandoned the search for Vulcan.

* 1915 – Karl Schwarzschild publishes the Schwarzschild metric about a month after Einstein published his general theory of relativity.

He is best known for providing the first exact solution to the Einstein field equations of general relativity, for the limited case of a single spherical non-rotating mass, which he accomplished in 1915, the same year that Einstein first introduced general relativity.

Schwarzschild, in contrast, chose a more elegant " polar-like " coordinate system and was able to produce an exact solution which he first set down in a letter to Einstein of 22 December 1915, written while Schwarzschild was serving in the war stationed on the Russian front.

Einstein himself at first viewed Minkowski's treatment as a mere mathematical trick, before eventually realizing that a geometrical view of space-time would be necessary in order to complete his own later work in general relativity ( 1915 ).

When Albert Einstein developed his general theory of relativity in 1915, this was used as a mathematical starting point for most cosmological theories including the Big Bang and the Steady State theories.

The publication in 1915 by Einstein of a general relativity explanation for the precession of the perihelion of Mercury, established multilinear algebra and tensors as physically important mathematics.

This embryonic divination has been acclaimed as an anticipation of Einstein ’ s ( 1915 – 16 ) relativistic theory of the gravitational field.

First published by Einstein in 1915 as a tensor equation, the EFE equate spacetime curvature ( expressed by the Einstein tensor ) with the energy and momentum within that spacetime ( expressed by the stress – energy tensor ).

The assembly line developed by Ford Motor Company between 1908 and 1915 made assembly lines famous in the following decade through the social ramifications of mass production, such as the affordability of the Ford Model T and the introduction of high wages for Ford workers.

Three works Team Cars with 16-valve twin cam engines were built for racing and record breaking: chassis number 1914, later developed as the Green Pea ; chassis number 1915, the Razor Blade record car ; and chassis number 1916, later developed as the Halford Special.

The use of metal aircraft structures was pioneered before World War I by Breguet but would find its biggest proponent with Anthony Fokker who used chrome-molybdenum steel tubing for the fuselage structure of all his fighter designs, while the innovative German engineer Hugo Junkers developed two all-metal, single-seat fighter monoplane designs with cantilever wings: the strictly experimental Junkers J 2 private-venture aircraft, made with steel, and some forty examples of the Junkers D. I, made with corrugated duralumin, all based on his experience in creating the pioneering Junkers J 1 all-metal airframe technology demonstration aircraft of late 1915.

After the sinking of the RMS Lusitania in 1915, public anti-German sentiment was widespread, and Marx's German character was booed, so he quickly dropped the accent and developed the fast-talking wise-guy character that became his trademark.

Dr. Cluny MacPherson of Royal Newfoundland Regiment brought the idea of a mask made of chemical absorbing fabric and which fitted over the entire head to England, and this was developed into the British Hypo Helmet of June 1915.

The theory of guild socialism was developed and popularised by G. D. H. Cole who formed the National Guilds League in 1915 and published several books on guild socialism, including Self-Government in Industry ( 1917 ) and Guild Socialism Restated ( 1920 ).

It was developed by Dan Horn in 1915 as an aged version of Colby.

The Italians developed the Villar Perosa, introducing it in 1915.

The first true vacuum triodes in production were the Pliotrons developed by Irving Langmuir at the General Electric research laboratory ( Schenectady, New York ) in 1915.

Such wings were already being developed by several designers, including Hugo Junkers, whose work during 1915 resulted in the pioneering Junkers J 1, the world's first practical all-metal aircraft of any type.

Cordite was used initially in the. 303 British, Mark I and II, standard rifle cartridge between 1891 and 1915 ; however, shortages of cordite in World War I led to United States – developed smokeless powders being imported into the UK for use in rifle cartridges.

He sailed with the British Mediterranean Expeditionary Force on 28 February 1915 but developed sepsis from an infected mosquito bite.

Gestalt graphology was a system of handwriting analysis developed circa 1915 in Germany and was related theoretically to Gestalt psychology.

* Curtis G. Culin ( 1915 – 1963 ), Sgt in the 2d Armored Division during WWII who developed the hedgerow destroying device for the Sherman tanks during the battle of Normandy.

By autumn 1915 Asquith ’ s Coalition was close to breaking up over conscription, and in the absence of firm leadership ad hoc campaigns had developed in Sinai, Gallipoli, Mesopotamia and Salonika.

A small dame school and prayer house run by Anglican deaconesses existed in the 1890s and 1900s, and developed to become St. Barnabas ( 1915 ).

He developed a working model that used a simple wedge as the lock, and was eventually assigned on March 9, 1915.

The Atlantic Beach Corporation bought and developed most of the land in what is now Atlantic Beach in 1915, and the town was incorporated in 1926.

The Dixie Highway, which was developed between 1915 and 1927, had divisions running down the east coast ( present-day U. S. 1 ) and the center of the state ( present-day U. S. 441 ) was an important route for early " Tin Can Tourists " to reach the southern part of the Sunshine State.

Coldspring had developed into a bustling county seat town by 1915, but disaster struck March 30, 1915 when the wooden courthouse burned, thus removing the economic foundation of the town.