In total, Shetland lost more than 500 men, a higher proportion than any other part of Britain, and there were further waves of emigration in the 1920s and 1930s.

The repeated waves of pogroms that swept Eastern Europe in the 19th and early 20th century prompted mass Jewish emigration ( more than 2 million Russian Jews emigrated in the period 1881 – 1920 ).

Of greater long-term demographic impact is emigration: Ireland was chiefly depopulated after the 1840s famines by waves of emigration.

The waves of emigration because of the famine and in the years following also ensured that such feelings would not be confined to Ireland, but spread to England, the United States, Australia and every country where Irish emigrants gathered.

This was later reinforced by the acquisition of Puerto Rico in 1898 and by later waves of the Hispanic emigration from Mexico, Cuba, and Central and South America to the United States beginning in the second half of 19th century until today.

The American Mafia arose from offshoots of the Mafia that emerged in the United States during the late nineteenth century, following waves of emigration from Sicily.

; 1881 – 1884, 1903 – 1906, 1914-1921: Repeated waves of pogroms swept Russia, propelling mass Jewish emigration ( more than 2 million Russian Jews emigrated in the period 1881-1920 ).

A World Jewish Congress delegation meets with Polish Prime Minister Donald Tusk, June 2008As the Jewish community dwindled, over successive waves of emigration ( the last in 1968 ), the WJC saw Poland as an important repository of Jewish history as well as the custodians of the killing grounds in which much of European Jewry fell victim to the German Final Solution.

The Dominican Republic has experienced three distinct waves of emigration in the second half of the twentieth century.

It first came to the United States during the large waves of Jewish emigration beginning in the 1880s.

However, waves of pogroms, associated with the Holocaust ( see Romania during World War II and Holocaust in Romania ) as well as emigration to Israel during Romania's communist period largely diminished its presence.

In total, Shetland lost more than 500 men, a higher proportion than any other part of Britain, and there were waves of emigration in the 1920s and 1930s.

This emigration is regarded as the second of the waves of emigration from Norway ( the first being the trek to England, Atlantic islands, Normandy, etc.

The American Mafia arose from offshoots of the Mafia that emerged in the United States during the late nineteenth century, following waves of emigration from Sicily.

After the annexation, many Crimean Tatars were massacred and exiled into Siberia and under pressure of Slavic colonization, Crimean Tatars began to abandon their homes and move to the Ottoman Empire in continuing waves of emigration.

Overpopulation and the enclosure movement in Ireland along with established commercial shipping routes between Quebec City and ports in Dublin and Liverpool encouraged large waves of Irish emigration to Lower Canada starting in 1815.

After the big waves of Jewish emigration in the years permitted by the Communist Party in the years 1947-1952 and again in the first years of the 1960s, approx.

But it suffered greatly with the establishment of communist regime, the emigration of many Armenian Romanians back to Soviet Armenia after the Second World War, the immigration waves to the West.

* During the first immigration waves the emigration from Israel was a great cause for pessimism in regards the success of the Zionist enterprise.

The successive and periodic waves of emigration diminished the population down to roughly 14, 000 inhabitants.

Unlike many other minorities, English-speaking Quebecers are not an ethnic group, with large emigration to other provinces, an early and strong French language education program in English schools, intermarriage with francophones and waves of immigration renewing the face of the community every generation.

Many are able to trace their family origins back to Ireland via one of the several waves of emigration there throughout the centuries.

The waves are separated by intervals of 15 minutes to an hour or more ( because of their great length ), and this has often lulled people into thinking after the first great wave has crashed that it is all over.

Discordant coastlines feature distinctive landforms because the rocks are eroded by ocean waves.

Sea cliffs retreat landward because of the constant undercutting of slopes by waves.

Later the length of the platform decreases because the waves lose their energy as they break further off shore ( Easterbrook 1999 ).

This evidence that the beams were composed of particles was strong because scientists knew it was impossible to deflect electromagnetic waves with an electric field.

When these vessels of a new model were built, which were intended to " clip " over the waves rather than plough through them, the improved type of craft became known as " clippers " because of their speed.

Diffraction arises because of the way in which waves propagate ; this is described by the Huygens – Fresnel principle and the principle of superposition of waves.

Because such waves conserve the amount of energy they transmit through any spherical boundary surface drawn around their source, and because such surfaces have an area that is defined by the square of the distance from the source, the power of EM radiation always varies according to an inverse-square law.

Interference usually refers to the interaction of waves that are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency.

It reflects medium-frequency radio waves, and because of this reflection, radio waves can be propagated beyond the horizon.

Skin-on-frame kayaks are still being used for hunting by Inuit people in Greenland, because the smooth and flexible skin glides silently through the waves.

A further reason why Newton rejected light as waves in a medium was because such a medium would have to extend everywhere in space, and would thereby " disturb and retard the Motions of those great Bodies " ( the planets and comets ) and thus " as it < nowiki > medium </ nowiki > is of no use, and hinders the Operation of Nature, and makes her languish, so there is no evidence for its Existence, and therefore it ought to be rejected.

The lower-case usage arose from technological development having rendered the original definition imprecise, because contemporary masers emit electromagnetic waves not just at microwave frequencies, but rather across a broader band of the electromagnetic spectrum.

It forms because the solar velocity of the wind exceeds ( typically 2 – 3 times ) that of Alfvén waves, a family of characteristic waves with which disturbances propagate in a magnetized fluid.

The wave model is so named because electrons exhibit properties ( such as interference ) traditionally associated with waves.

Surface waves travel more slowly than P-waves and S-waves, but because they are guided by the surface of the Earth ( and their energy is thus trapped near the Earth's surface ) they can be much larger in amplitude than body waves, and can be the largest signals seen in earthquake seismograms.

Rapid location of earthquakes makes tsunami warnings possible because seismic waves travel considerably faster than tsunami waves.

Sound waves are complicated because they superimpose one on top of each other.

Tsunami waves do not resemble normal sea waves, because their wavelength is far longer.