If the ventouse attempt fails, it may be necessary to deliver the infant by forceps or caesarean section.

* Loss of a tooth: If an extracted tooth slips out of the forceps, it may be swallowed or inhaled.

If the glass is damaged, atmospheric pressure can collapse the vacuum tube into dangerous fragments which accelerate inward and then spray at high speed in all directions.

If light pressure were the cause of the rotation, then the better the vacuum in the bulb, the less air resistance to movement, and the faster the vanes should spin.

If one assumed that magnetopause was just a boundary between a magnetic field in a vacuum and a plasma with a weak magnetic field embedded in it, then the magnetopause would be defined by electrons and ions penetrating one gyroradius into the magnetic field domain.

If the bias is small, we can let U − E ≈ φM in the expression for κ, where φM, the work function, gives the minimum energy needed to bring an electron from an occupied level, the highest of which is at the Fermi level ( for metals at T = 0 kelvins ), to vacuum level.

If the extra electrode ( also called a " plate " or " anode ") is made more positive than the hot filament, a direct current flows through the vacuum to the anode ( a demonstration of the Edison effect ).

If true, sonoluminescence may be the first observable example of quantum vacuum radiation.

If toner spills into the laser printer, a special type of vacuum cleaner with an electrically conductive hose and a high efficiency ( HEPA ) filter may be needed for effective cleaning.

If antihydrogen atoms were to be suspended in a perfect vacuum, however, they should survive indefinitely.

If the boulder is touched, it snaps open like a set of jaws and pulls any unfortunate creature into it with a powerful vacuum.

If the capsule had been completely depressurised to a high vacuum, the accident would not have occurred.

If, for example, a pair of atomic nuclei are merged to very briefly form a nucleus with a charge greater than about 140, ( that is, larger than about the inverse of the fine structure constant, which is a dimensionless quantity ), the strength of the electric field will be such that it will be energetically favorable to create positron-electron pairs out of the vacuum or Dirac sea, with the electron attracted to the nucleus to annihilate the positive charge.

If a BGA is found to be badly soldered, it can be removed in a rework station, which is a jig fitted with infrared lamp ( or hot air ), a thermocouple and a vacuum device for lifting the package.

If the " vacuum " has a pressure of 10 < sup >- 6 </ sup > mmHg or less, the main vehicle of conduction is electrons.

If the bore is a total vacuum ( such as a tube with a plasma window ) there is no friction at all which helps prolonged reusability.

If the Ricci tensor satisfies the vacuum Einstein equation, then the manifold is an Einstein manifold, which have been extensively studied ( cf.

If the theory has a mass gap, i. e. there are no masses between 0 and some constant greater than zero, then vacuum expectation distributions are asymptotically independent in distant regions.

If we assume that V is nonnegative and is zero only for the Higgs vacuum and that the Higgs field is in the adjoint representation, then

If there is a field ( often a background field ) which acquires an expectation value ( not necessarily a vacuum expectation value ) which is not invariant under the symmetry in question, we say that the system is in the ordered phase, and the symmetry is spontaneously broken.

If using a system of units where the speed of light in vacuum is defined as exactly 1, for example if space is measured in light-seconds and time is measured in seconds, then the cone will have a slope of 45 °, because light travels a distance of one light-second in vacuum during one second.

If the balls fall in a vacuum, then there's no air resistance and their final speeds will be the same.

If the energy-momentum tensor is zero in the region under consideration, then the field equations are also referred to as the vacuum field equations.

If, then the distinguished vector in the Hilbert space is thought of as the vacuum state defined by.

If intakes and outlets are submerged, a vacuum pump may be applied at the crest to prime the siphon.

If the raw material is hides and skin, size reduction, washing, removing hair from the hides, and de-greasing are the most important pretreatments used to make the hides and skins ready for the main extraction step.

If the combined ratio falls below 3. 2 or so, production ceases to be economically viable and some factories cease extraction of butter and powder and trade exclusively in cocoa liquor.

If the answer to a question is not present in the data sources, no matter how well the question processing, information retrieval and answer extraction is performed, a correct result will not be obtained.

If increased skin extraction is desired, a winemaker might choose to crush the grapes after destemming.

If the operculum does not disappear, recommended treatment is extraction of the wisdom tooth.

If he does not have teammates to aid him, he may need to balance his work between extracting the resource and treating the extraction site to prevent it from collapsing prematurely or exploding.

If a probe is gently passed in the tooth extraction socket, then bare bone is encountered which is very sensitive.

If an extraction device is defunct after 10 years, its NEG will be significantly lower than if it operates for 30 years.

If the fetus is removed intact, the procedure is referred to as intact dilation and extraction by the American Medical Association, and referred to as " intact dilation and evacuation " by the American Congress of Obstetricians and Gynecologists ( ACOG ).

If the chamber is cut shallow, so the case headspaces off the mouth, the rim is used for extraction only ; a standard chamber will use the rim for both headspacing and extraction.

If for an extraction system the D value is proportional to the square of the concentration of a reagent ( Z ) then the slope of the graph of log < sub > 10 </ sub >( D ) against log < sub > 10 </ sub >(< nowiki ></ nowiki > Z < nowiki ></ nowiki >) will be two.

If this membrane is exposed after an extraction, but remains intact, a " sinus exposed " has occurred.

If it were not for an old professor who made me read the classics I would have been stymied on what to do, and now I understand why they are classics ; ;

If I even hint at it do you think it will matter that you are his nephew -- and not even a blood nephew ''??

If the circumstances are faced frankly it is not reasonable to expect this to be true.

If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.

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 to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.

Defoe then commented, `` If they Could Draw that young Gentleman into Their Measures They would show themselves quickly, for they are not asham'd to Say They want only a head to Make a beginning ''.

If Jews are identified as a religious body in a controversy that comes before a national or international tribunal, it is obviously compatible with the goal of human dignity to protect freedom of worship.

If they are right, they will prevail of and by themselves.

Without preliminaries, Esther asked him, `` If you are a world citizen, will you take Garry Davis' place in his tent while he goes to the hospital ''??

If we are to believe the list of titles printed in Malraux's latest book, La Metamorphose Des Dieux, Vol. 1 ( ( 1957 ), he is still engaged in writing a large novel under his original title.

If the would-be joiner asks these questions he is not likely to be duped by extremists who are seeking to capitalize on the confusions and the patriotic apprehensions of Americans in a troubled time.

If we break the minister to our bit, we are buying back our own sins.

If the record buyer's tastes are somewhat eclectic or even the slightest bit esoteric, he will find them satisfied on educational records.

If Daddy's books are out of bounds his own picture books are not.

If it will simply delay the debates until the qualifications are closed next spring, and then carry all the candidates on a tour of debates, it can provide a service to the state.

If they are to be commended for foresight in their planning, what then is the judgment of a town council that compounds this problem during the planning stage??

If the Communists are sincere in wanting a united, neutral and disarmed Germany, it might well be advantageous for the German people in this nuclear age.

If only this could be done more often -- with such heartening results -- many of the earth's `` big problems '' would shrink to the insignificances they really are.

If any are left, presently, we may expect to see signs specifically prohibiting the feeding of them too.

If the raw population figures are crucially relevant, then it is idle to think of liberation, as idle as to suppose that Poland might liberate Russia.

If it is not enough that all of our internationalist One Worlders are advocating that we join this market, I refer you to an article in the New York Times' magazine section ( Nov. 12, 1961 ), by Mr. Eric Johnston, entitled `` We Must Join The Common Market ''.

If the UN troops are not mercenaries then the Hessians were not mercenaries either.