Doppler could not work in his father's business because of his generally weak physical condition.

Only a year later, at the age of 39, Doppler gave a lecture to the Royal Bohemian Society of Sciences and subsequently published his most notable work, " Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels " ( On the coloured light of the binary stars and some other stars of the heavens ).

His early work focused on the Doppler effect in optics and acoustics.

For the Doppler principle to work in a flowmeter it is mandatory that the flow stream contains sonically reflective materials, such as solid particles or entrained air bubbles.

So Doppler broadening in the moderator, which affects thermal neutrons, does not work, nor does a negative void coefficient of the moderator.

This work was extended to design a device measuring the Doppler shifts from pulsating blood vessels, which was described in the Journal of the Acoustical Society of America in 1957.

They started this work in July 1958 and in the same year detected ultrasonic Doppler signals from arteries and veins at the skin surface.

The Franklin group reported remote Doppler sensing of blood flow only in 1966, citing the work by Satomura and Kaneko.

Perry and his students ( who formed the Kettering Group along with some other volunteers worldwide ) continued their satellite tracking work for a number of years, using only inexpensive shortwave radio equipment and painstakingly using the Doppler effect to deduce the satellites ' orbits.

Because of his axiomatic method, Einstein was able to derive all results of his predecessors – and in addition the formulas for the Relativistic Doppler effect and Relativistic aberration – on a few pages, while his predecessors needed years of long, complicated work to arrive at the same mathematical formalism.

In the early work of Max Planck, Albert Einstein and Niels Bohr, the existence of energy in discrete quantities had been postulated, in order to explain phenomena, such as the spectrum of black-body radiation, the photoelectric effect, and the stability and spectrum of atoms such as hydrogen, that had eluded explanation by, and even appeared to be in contradiction with, classical physics.

Orson Scott Card, an author of both science fiction and non-SF fiction, has postulated that in science fiction the message and intellectual significance of the work is contained within the story itself and, therefore, there need not be stylistic gimmicks or literary games ; but that many writers and critics confuse clarity of language with lack of artistic merit.

In his work on formulating quantum mechanics, Werner Heisenberg postulated his uncertainty principle, which states:

The scholarly detective work of Douglass Adair in 1944 postulated the following assignments of authorship, corroborated in 1964 by a computer analysis of the text:

It is also postulated to work for Hamito-Semitic ( Fleming 1973 ), Chinese ( Munro 1978 ) and Amerind ( Stark 1973 ; Baumhoff and Olmsted 1963 ).

Carnot however further postulated that some caloric is lost, not being converted to mechanical work.

His name is composed in Hebrew of the same three consonants as a root speculated by people to have originally meant " breath ", because rabbis postulated one of its roots thus, also " waste ", but is used in the Hebrew Bible primarily as a metaphor for what is " elusive ", especially the " vanity " ( another definition by the rabbis of medieval France, Rashi in specific from his translation into Old French ) of human beauty and work e. g. Hevel Hayophi ( He-vel Ha-yo-fi ) vanity is as beauty from the Song of Songs of Solomon.

Though the book is not considered an historical account of the Khazar's conversion to Judaism, British scholar D. M. Dunlop postulated that R ' Yehuda Halevi had access to Khazar documents upon which he loosely based his work, however in this case the pagan is just a stereotype rather than using actual quotes.

As early as 1890 Mommsen postulated a Theodosian ' editor ' of the Scriptores ' work, an idea that has resurfaced many times since.

Caragiale's interest in Realism was however denied by some of his Junimist advocates, who attempted to link his entire work with Maiorescu's guidelines: on the basis of Schopenhauerian aesthetics, critic Mihail Dragomirescu postulated that his humor was pure, and did not draw on any special circumstance or context.

The origins of the concept of hotspots lie in the work of J. Tuzo Wilson, who postulated in 1963 that the Hawaiian Islands result from the slow movement of a tectonic plate across a hot region beneath the surface.

Many modern discussions of the religious, magical, or divinatory genesis of board games stem from the work of Stewart Culin who postulated a single source: the " classification of all things according to the Four Directions " by means of divinatory arrows, and that " urvivals of these magical processes constitute our present games " ( including all dice, board, card, and domino games ).

and in other work ( a novel synthesis of indoles with two Pd migrations ) equilibria are postulated between different palladacycles:

It has been postulated that this work was written to complement another historical work, about subsequent centuries until the time of Hadrian, which is no longer extant.

In his controversial 1950 work Worlds in Collision, Immanuel Velikovsky postulated that the planet Venus emerged from Jupiter as a comet.

A distant precursor of Bergson can be found in the work of the pre-Christian Stoic philosopher Posidonius, who postulated a " vital force " emanated by the sun to all living creatures on the Earth's surface.

Such a connection of ( proto -) Judaism and Atenism had been suggested before Mann, most notably by Sigmund Freud in his Moses and Monotheism, which had appeared in 1939, just before Mann began work on the tetralogy's fourth part — although in the last installment of Mann's work, Akhenaten is postulated as the Pharaoh of the Exodus contemporary of Moses, while Mann in his novella " Das Gesetz " ( 1944 ) casts Ramesses II in that role.

Like ours, the economy of the space merchants must constantly expand in order to survive, and, like ours, it is based on the principle of `` ever increasing everybody's work and profits in the circle of consumption ''.

Also, as we now know, bosons also have antiparticles, but since bosons do not obey the Pauli exclusion principle ( only fermions do ), hole theory does not work for them.

To see the principle of an equal-energy surface at work, imagine gradually increasing the rate of rotation of the bucket from zero.

Apparently unaware of Smeaton's work, the same principle was identified by Louis Vicat in the first decade of the nineteenth century.

These devices work on the principle known as the magnetocaloric effect.

Also used are external clip-on muffles that work using the same principle.

The concept was derived from R. H. MacArthur and W. D. Hamilton's work on sex ratios, derived from Fisher's principle, especially Hamilton's ( 1967 ) concept of an unbeatable strategy.

According to Carnot's principle, work can only be done when there is a temperature difference, and the work should be some function of the difference in temperature and the heat absorbed.

Then Clausius asked what would happen if there would be less work done than that predicted by Carnot's principle.

A seminal work by Dyson came in 1966 when, together with Andrew Lenard and independently of Elliott H. Lieb and Walter Thirring, he proved rigorously that the exclusion principle plays the main role in the stability of bulk matter.

Mechanically powered hammers often look quite different from the hand tools, but nevertheless most of them work on the same principle.

" And then they went to work and elaborated this one principle all through, and it is a most wonderful ideal: how all that we call ethics they simply bring out from that one great principle of non-injury and doing good.

" The KISS principle states that most systems work best if they are kept simple rather than made complex, therefore simplicity should be a key goal in design and unnecessary complexity should be avoided.

Townes reports that several eminent physicists – among them Niels Bohr, John von Neumann, Isidor Rabi, Polykarp Kusch, and Llewellyn Thomas — argued the maser violated Heisenberg's uncertainty principle and hence could not work.

In 1964 Charles H. Townes, Nikolay Basov, and Aleksandr Prokhorov shared the Nobel Prize in Physics, “ for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser – laser principle ”.

Newer classification systems tend to use the principle of synthesis ( combining codes from different lists to represent the different attributes of a work ) heavily, which is comparatively lacking in LC or DDC.

The use of velocity in the static analysis of a lever is an application of the principle of virtual work.

Nutcrackers usually work on the principle of moments as described in Archimedes ' analysis of the lever.

The principle holds that in a hierarchy, members are promoted so long as they work competently.

* Elements of Theology: A systematic work, with 211 propositions and proofs, describing the universe from the first principle, the One, to the descent of souls into bodies

His principle ever after was: work as hard as you can, earn all you can, save all you can, and then give all you can.

They have in common the place in the work of creation assigned to the female principle, the conception of the Deity ; the ignorance of the rulers of this lower world with regard to the Supreme Power ; the descent of the female ( Sophia ) into the lower regions, and her inability to return.