When this is done, the model radius still decreases with mass, but becomes zero at M < sub > limit </ sub >.

When matter ( ordinary material particles ) is changed into energy ( such as energy of motion, or into radiation ), the mass of the system does not change through the transformation process.

When the Great Depression hit in the 1930s there were no easily available jobs in the US and Canada and emigration fell to less than 50, 000 a year, bringing to an end the period of mass migrations that had opened in the mid-18th century.

When ice melts, it absorbs as much energy as it would take to heat an equivalent mass of water by 80 ° C.

When she entered features, Hollywood believed that the movies ' future lay in reproducing Broadway plays for a mass audience.

When a protostar is formed from the collapse of a giant molecular cloud of gas and dust in the local interstellar medium, the initial composition is homogeneous throughout, consisting of about 70 % hydrogen, 28 % helium and trace amounts of other elements, by mass.

When born, baby manatees have an average mass of.

When considered together, the object and the mass constitute a closed system in which total momentum is conserved.

When a uranium nucleus fissions into two daughter nuclei fragments, about 0. 1 percent of the mass of the uranium nucleus appears as the fission energy of ~ 200 MeV.

When the temperature and pressure in the core become sufficient to ignite helium fusion, a helium flash will occur if the core is largely supported by electron degeneracy pressure ( stars under 1. 4 solar mass ).

When the mass moves closer to the equilibrium position, the restoring force decreases.

When Shaka's mother Nandi died for example, the monarch ordered a massive outpouring of grief including mass executions, forbidding the planting of crops or the use of milk, and the killing of all pregnant women and their husbands.

When in static equilibrium, the system is either at rest, or its center of mass moves at constant velocity.

When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction on that system.

When released, the restoring force combined with the pendulum's mass causes it to oscillate about the equilibrium position, swinging back and forth.

When the metric system was introduced in France in 1795, it included units for length, area, dry volume, liquid capacity, weight or mass, and even currency, but not for time.

When this effect is taken into account, typical gamma-ray bursts are observed to have a true energy release of about 10 < sup > 44 </ sup > J, or about 1 / 2000 of a Solar mass energy equivalent.

When all means of self-support are exhausted, the affected population begins to migrate in search of food or fall victim to outright mass starvation.

When massed Confederate artillery devastated a Union assault by Maj. Gen. Fitz John Porter's V Corps, Longstreet's wing of 25, 000 men in five divisions counterattacked in the largest, simultaneous mass assault of the war.

When the US markets collapsed in the Panic of 1819 – a result of global economic adjustments – the central bank came under withering criticism for its belated tight money policies – policies that exacerbated mass unemployment and plunging property values.

When Rosenfeld named them, the only known leptons were electrons and muons, which are in fact of small mass — the mass of an electron () and the mass of a muon ( with a value of ) are fractions of the mass of the " heavy " proton ().

When he needs money to buy something like, say, the Rolls-Royce he keeps near his vegetable patch, he takes a flyer in the sale of surplus army supplies.

When the Confederate attempt to defend Petersburg failed, the Confederate army retreated but was pursued and defeated, which resulted in Lee's surrender to Grant at Appomattox Court House on April 9, 1865.

When the news spread that Agrippina had died, the Roman army, senate and various people sent him letters of congratulations that he had been saved from his mother's plots.

When the Viking raids resumed in 892, Alfred was better prepared to confront them with a standing, mobile field army, a network of garrisons, and a small fleet of ships navigating the rivers and estuaries.

When the Vikings returned in force in 892 they found a kingdom defended by a standing, mobile field army and a network of garrisoned fortresses that commanded its navigable rivers and Roman roads.

When he was drafted into the army in 1894, his gift for turning notions upside down defeated attempts to instill military discipline.

When the Roman infantry became entangled in combat with his army, the hidden ambush force attacked the legionnaires in the rear.

When Abdülhamid came to the throne the army asked for gratuities and the sultan claimed that: " There are, no longer, gratuities in our treasury, all of our soldier sons should learn ".

When Democratic-Republicans in some states refused to enforce federal laws, and even threatened to rebel, Federalists threatened to send the army to force them to capitulate.

When they saw that the centre had broken, the Elector and Marsin decided the battle was lost and, like the remnants of Tallard's army, fled the battlefield ( albeit in better order than Tallard's men ).

When he had reached Bodmin on 28 July, he found that there was no chance of supplies or recruits, and he also learned that the Royalist army was at Launceston, close to his rear.

: When, after the action had thus occurred, his own men returned to each general, Scipio could adopt no fixed plan of proceeding, except that he should form his measures from the plans and undertakings of the enemy: and Hannibal, uncertain whether he should pursue the march he had commenced into Italy, or fight with the Roman army which had first presented itself, the arrival of ambassadors from the Boii, and of a petty prince called Magalus, diverted from an immediate engagement ; who, declaring that they would be the guides of his journey and the companions of his dangers, gave it as their opinion, that Italy ought to be attacked with the entire force of the war, his strength having been nowhere previously impaired.

When the revolt broke out, it was supported by intellectuals, the army, and almost all the ethnic minorities of the Empire, and forced Sultan Abdul Hamid II to re-adopt the long defunct Ottoman constitution of 1877, ushering in the Second Constitutional Era.

When the Greek army entered Thessaloniki in the First Balkan War ahead of the Bulgarian 7th division by only a day, they were asked to allow a Bulgarian battalion to enter the city.

" When Congress, in the summer of 1973, legislated an end to U. S. military action in, over, or off the shores of Indochina, the only U. S. military activity then going on was air support of a friendly Cambodian government and army desperately defending their country against a North Vietnamese and Khmer Rouge onslaught ... What destabilized Cambodia was North Vietnam's occupation of chunks of Cambodian territory from 1965 onwards for use as military bases from which to launch attacks on U. S. and South Vietnamese forces in South Vietnam.

When the Byzantine forces saw the entire Ottoman army get on their knees to pray, the Byzantine army was witnessing how united the Ottoman Turks were and this worried them.

When Constantius learned of Shapur's withdrawal from Roman territory, he prepared his army for a counter-attack, drilling them and upgrading the equipment of his cataphracts.

When the Japanese army approached Wuhan in the fall of 1938, Chiang's forces abandoned the city without a fight and withdrew farther inland, to Chongqing.

When Hernando Pizarro and his army returned, Almagro's troops quickly defeated them and took the Pizarro brothers Hernando and Gonzalo captive.

When the army reached Bithynia, some of the soldiers smelled an odor emanating from the coach.

When the army issued revised mobilization regulations in 1942, it distinguished " homosexual " recruits from " normal " recruits for the first time.

When the British army conquered Eritrea from the Italians in spring 1941, most of the infrastructures and the industrial areas were extremely damaged.

When most of the land army arrived, the King and Queen had a profound dispute.

When the French king Charles VIII invaded northern Italy, Piero II chose to resist his army.