If it is " observed " ( measured with a photon ) not at a particular slit but rather at the screen, then there is no " which path " information as part of the interaction, so the electron's " observed " position on the screen is determined strictly by its probability function.

If the photon energy is too low, the electron is unable to escape the material.

If the photon energy is absorbed, some of the energy liberates the electron from the atom, and the rest contributes to the electron's kinetic energy as a free particle.

If an atom is already in the excited state, it may be perturbed by the passage of a photon that has a frequency ν < sub > 21 </ sub > corresponding to the energy gap ΔE of the excited state to ground state transition.

If a photon moves from one place and time – in shorthand, A – to another place and time – shorthand, B – the associated quantity is written in Feynman's shorthand as P ( A to B ).

If a light source (' the atom ') is in the excited state with energy, it may spontaneously decay to a lower lying level ( e. g., the ground state ) with energy, releasing the difference in energy between the two states as a photon.

If the atom is in the excited state, it may decay into the lower state by the process of spontaneous emission, releasing the difference in energies between the two states as a photon.

If we were to set 80 % of the mass of the photon rocket

If a photon rocket begins its journey in low earth orbit, then one year of thrusting may be required to achieve an earth escape velocity of 11. 2 km / s if the vehicle is already in orbit at a velocity of 9, 100 m / s, and 400 m / s additional velocity is obtained from the east to west rotation of the earth.

If the signal data are not constant, then can be calculated from data where the signal is zero or relatively constant .</ ref > Notice that such an alternative definition is only useful for variables that are always non-negative ( such as photon counts and luminance ).

If the scattered photon still has enough energy left, the process may be repeated.

If the photon is of lower energy, but still has sufficient energy ( in general a few eV to a few keV, corresponding to visible light through soft X-rays ), it can eject an electron from its host atom entirely ( a process known as the photoelectric effect ), instead of undergoing Compton scattering.

If, the equivalent photon mass must be.

If the final vibrational state of the molecule is more energetic than the initial state, then the emitted photon will be shifted to a lower frequency in order for the total energy of the system to remain balanced.

If the final vibrational state is less energetic than the initial state, then the emitted photon will be shifted to a higher frequency, and this is designated as an Anti-Stokes shift.

Prior to any measurements being made, the polarizations of the photons are indeterminate ; If a measurement is made on one of the photons using a two-channel polarizer aligned with the axes of the coordinate system, the photon assumes either horizontal or vertical polarization, with 50 % probability for each orientation, and the other two photons immediately assume the identical polarization.

If the atom, which is now in the excited state, emits a photon spontaneously, it will be kicked by the same amount of momentum but in a random direction.

If the photon is absorbed, no new direction is given, and tracing for that photon ends.

If an excited atom then emits a photon spontaneously, it will be accelerated.

If a wave containing exactly one photon passes over some atoms, and one of them absorbs it, that atom needs to tell the others that they can't absorb the photon anymore.

If an observer runs away from a photon in the direction it travels from a source, having it catch up with the observer, then when the photon catches up it will be seen as having less energy than it had at the source.

If love reflects the nature of man, as Ortega Y Gasset believes, if the person in love betrays decisively what he is by his behavior in love, then the writers of the beat generation are creating a new literary genre.

If appropriate proportions of three primary pigments are mixed, the result reflects so little light as to be called " black ".

If the term has nonetheless retained a certain consistency in its use across these fields and would-be movements, it perhaps reflects the word ’ s position in general English usage: though the standard dictionary definition of irreal gives it the same meaning as unreal, irreal is very rarely used in comparison with unreal.

* If θ > θ < sub > c </ sub >, the entire ray reflects from the boundary.

If this reflects the god that El refers to in the biblical text concerning Balaam, and the connection between Balaam and Baal Peor is accurate, then Baal Peor can be identified as Shamash.

If a corresponding hypothesis test is performed, the confidence level corresponds with the level of significance, i. e. a 95 % confidence interval reflects a significance level of 0. 05, and the confidence interval contains the parameter values that, when tested, should not be rejected with the same sample.

If we let Him — for we can prevent Him, if we choose — He will make the feeblest and filthiest of us into a god or goddess, dazzling, radiant, immortal creature, pulsating all through with such energy and joy and wisdom and love as we cannot now imagine, a bright stainless mirror which reflects back to God perfectly ( though, of course, on a smaller scale ) His own boundless power and delight and goodness.

If this reflects more colourism ( some Brazilians perceive straightened afro-textured hair as ridiculous in a risible way, especially in a man, which is often labeled as viadagem, or a greater politicization with respect to race relations and racism, varies greatly with the person.

At the fishing hole with his friends, Abner lazily reflects that if he could be anyone in the world, he'd rather be himself (" If I had my Druthers ").

If V is defined in terms of the line integral, the ambiguity of V reflects the freedom in the choice of the reference point

If something material happens with the company ( change of CEO, change of auditing firm, destruction of a significant number of company assets ), the SEC requires that the company soon issue an 8-K filing that reflects these changed conditions ( see Regulation FD ).

If Earth falls to the Wyrm, the spirit world ( which reflects reality in large part ) will fall as well.

If this happens, one says that " invariants do not separate the orbits ", and the algebra A reflects the topological quotient space X / G rather imperfectly.

If cortical thinning reflects synaptic pruning, then pruning may occur relatively early for language-based abilities.

Archaize: If thine style of writing reflects an age long gone, and a world unfamiliar to the modern reader, then thou art indeed a master of the quill and the ink.

The lovers are able to derive some comfort from this, believing that their love will remain intact even when they are arrested and tortured: " If the object was not to stay alive but to stay human ," Winston reflects, " what difference it ultimately make?

If any album reflects a real period of transition for an artist, it's this one.

If the edifice really reflects some original features of Tatar architecture, then its design should have certainly influenced that of the Kremlin towers in Moscow.

If the wording reflects the language of the editor, it points toward editorial reworking of a text, while if it is unused or avoided language, then it points toward being part of an earlier source.

If two devices, A and B, are connected via a pair of optical fibers, one used for sending from A to B and other for sending from B to A, the link is bidirectional ( two-way ).