We know that the number of radio and television impulses, sound waves, ultra-violet rays, etc., that may occupy the very same space, each solitary upon its own frequency, is infinite.

With de Broglie's suggestion of the existence of electron matter waves in 1924, and for a short time before the full 1926 Schrödinger equation treatment of hydrogen like atom, a Bohr electron " wavelength " could be seen to be a function of its momentum, and thus a Bohr orbiting electron was seen to orbit in a circle at a multiple of its half-wavelength ( this historically incorrect Bohr model is still occasionally taught to students ).

Analog ( or analogue ) television is the analog transmission that involves the broadcasting of encoded analog audio and analog video signal: one in which the information to be transmitted, the brightness and colors of the points in the image and the sound waves of the audio signal are represented by continuous variations of some aspect of the signal ; its amplitude, frequency or phase.

During its initial, and most deadly waves, approximately 200, 000 people were killed by the plague, and, by the 15th century, Cairo's population had been reduced to between 150, 000 and 300, 000.

It has a supermassive black hole at its core, which expels massive jets of matter that emit radio waves due to synchrotron radiation.

This was a period of weakness in Babylonia, and its ineffectual kings were unable to prevent new waves of peoples invading and settling in the land.

Arpoador beach, where surfers used to go after its perfect waves, comes in the sequence, followed by the famous borough of Ipanema.

Life in the sea accounts for the cetacean's loss of its external ears, whose function is to collect and focus airborne sound waves.

The boat " gives its side to the waves ; there comes next in a heap a steep mountain of water.

While diffraction occurs whenever propagating waves encounter such changes, its effects are generally most pronounced for waves where the wavelength is roughly similar to the dimensions of the diffracting objects.

The depth of the trench and its grade to the atoll's slope and shelf shore makes it more difficult for substantial tsunami waves to build before passing the atoll from the east.

The appearance of interference built up from individual photons could seemingly be explained by assuming that a single photon has its own associated wavefront that passes through both slits, and that the single photon will show up on the detector screen according to the net probability values resulting from the co-incidence of the two probability waves coming by way of the two slits.

In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves.

A graphical representation of the Arecibo message – Humanity's first attempt to use radio waves to actively communicate its existence to alien civilizations

The Second Intifada broke out in September 2000 with its waves of protest, civil unrest and bombings against Israeli military and civilians, many of them perpetrated by suicide bombers, and the beginning of rockets and bombings of Israeli border localities by Palestinian guerrillas from Gaza Strip, especially from Hamas and Jihad Islamic movements.

The term " harmonics " originated in physical eigenvalue problems, to mean waves whose frequencies are integer multiples of one another, as are the frequencies of the harmonics on stringed musical instruments, but the term has been generalized beyond its original meaning.

The submarine answered their waves with fire from its deck gun, but no one was hurt in the attack.

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.

Mauritania, lying next to the Atlantic coast at the western edge of the desert, received and assimilated into its complex society many waves of these migrants and conquerors.

The most common method is to use some form of radiation, such as infrared, lasers or radio waves, to guide the missile onto its target.

So, an aircraft traveling at Mach 1 at 20 ° C or 68 ° F, at sea level, will experience shock waves in much the same manner as when it is traveling at Mach 1 at 11, 000 m ( 36, 000 ft ) at-50 ° C or-58F, even though it is traveling at only 86 % of its speed at higher temperature like 20 ° C or 68 ° F.

It carried a complement of experiments to probe Venus ' atmosphere with radio waves, scan its brightness in ultraviolet light, and sample the solar particles and magnetic field fluctuations above the planet.

But he rejects, perhaps a little too sweepingly, the theory that disloyal and pro-Communist influences may have contributed to the policy of appeasing Stalin which persisted until after the end of the war and reached its high point at the Yalta Conference in February, 1945.

They came to be grouped in a separate family, known as Uralic ( though doubts long persisted about its validity ).

Spectroscopic observers found that ammonia and carbon disulfide persisted in the atmosphere for at least fourteen months after the collisions, with a considerable amount of ammonia being present in the stratosphere as opposed to its normal location in the troposphere.

Nonetheless, the belief in this status persisted for years, even finding its way onto UNESCO's own web site, into the pages of the New York Times and The Economist, and into international media reports in respect of Toronto's two Olympic bids.

Over the course of subsequent centuries, the term persisted and developed into its 21st century meaning of " recreational " or " leisurely pursuit ".

Therefore, in spite of its condemnation by religious authorities, homosexuality persisted in a subterranean manner.

The idea that pterosaurs were aquatic animals persisted among a minority of scientists as late as 1830, when the German zoologist Johann Georg Wagler published a text on " amphibians " which included an illustration of Pterodactylus using its wings as flippers.

The Dutch government persisted in its attempt to smuggle the seeds, and by the 1930s Dutch plantations in Java were producing 22 million pounds of cinchona bark, or 97 % of the world's quinine production.

Although many film scholars would agree that its classic period had effectively ended by 1942, elements of the genre have persisted, or have been paid homage, in contemporary film.

Even after its elementary character had been settled by Davy, he persisted in using the atomic weights he himself had adopted, even when they had been superseded by the more accurate determinations of other chemists.

Use of the word " hermaphrodite " in the medical literature has persisted to this day, although its propriety is still in question.

However, this date is very approximate, as many scholars have contended that Sumerian was already dead or dying as early as around 2100 BC, by the beginning of the Ur III period, while others believe that Sumerian persisted as a spoken language in a small part of Southern Mesopotamia ( Nippur and its surroundings ) until as late as 1700 BC.

This legend developed from a misguided belief that the river appeared and disappeared over time ( which persisted until the 19th Century ) because of its subterranean tributary.

Attic Greek persisted until the 3rd century BC, when it was replaced by its similar but more universal offspring, Koine Greek, or " the Common Dialect " ().

In southern Germany, it persisted into the 1560s, but its use also declined during the second half of the 16th century.

During the Middle Ages, though the memory of the Forum Romanum persisted, its monuments were for the most part buried under debris, and its location was designated the " Campo Vaccino " or " cattle field ," located between the Capitoline Hill and the Colosseum.

János, however, persisted in his quest and eventually came to the conclusion that the postulate is independent of the other axioms of geometry and that different consistent geometries can be constructed on its negation.

When the Milwaukee Normal School persisted with its popular enhanced curriculum, the regents of the Normal School system, the legislature, and the governor all became involved.

Although the daguerreotype process is usually said to have died out completely in the early 1860s, documentary evidence indicates that some slight use of it persisted more or less continuously throughout the following 150 years of its supposed extinction.

Members of the Oneida tribe persisted in the town during its early history.

While most mineral water resorts fell out of favor as medical science began to question the healing properties of mineral springs, Red Boiling Springs persisted, reaching its peak in the 1920s and 1930s.

In spite of its modern taxonomic irrelevance, the term has persisted, particularly in the names of herpetology, the scientific study of reptiles and amphibians, and herpetoculture, the captive care and breeding of reptiles and amphibians.

During this time the council of Basel, though nullified at Ferrara and abandoned by Cesarini and most of its members, persisted nonetheless, under the presidency of Cardinal Aleman.