If the collar at the bottom of the tube is adjusted so more air can mix with the gas before combustion, the flame will burn hotter, appearing blue as a result.

If the holes are closed, the gas will only mix with ambient air at the point of combustion, that is, only after it has exited the tube at the top.

* If the boat has an internal combustion engine anyway, then its alternator will provide significant charge when it is running.

Benjamin Radford, science writer and deputy editor of the science magazine Skeptical Inquirer, casts doubt on the plausibility of spontaneous human combustion, " If SHC is a real phenomenon ( and not the result of an elderly or infirm person being too close to a flame source ), why doesn't it happen more often?

If a plug extends too far into the combustion chamber, it may be struck by the piston, damaging the engine internally.

If the ignition control receives this half wave signal from the flame sensor then combustion will continue.

If this cannot be dissipated adequately there is a risk that hot spots may develop and the RAM temperature may rise to the point of combustion.

If prompt ignition does not occur, the combustion chamber can fill with excess fuel and oxidiser and significant overpressure can occur ( a " hard start ") or even an explosion.

If we focus the review on small components of the whole, in this case the elements oxygen and hydrogen, we come to the conclusion that hydrogen is an explosive gas and oxygen is a catalyst in combustion.

If oxygen is re-introduced to the fire, e. g. by opening a door ( or window ) to a closed room, combustion will restart, often explosively, as the gases are heated by the combustion and expand rapidly because of the rapidly increasing temperature.

If the room contains a lot of soot ( particulate matter ), it indicates that the room lacks enough oxygen to permit combustion of the soot particles.

If presence of an ignition source can not be prevented in a fuel tank then a fuel tank can be made inert by ( 1 ) reducing the oxygen content of the ullage ( space above the fuel that contains air and fuel vapors ) below the threshold required for combustion, or ( 2 ) by reducing the air-fuel ratio of the ullage below the minimum threshold ( Lower Flammability Limit ) required for combustion, or ( 3 ) increasing the fuel air ratio above the maximum threshold ( Upper Flammability Limit ) that can support combustion.

If equipped with internal combustion or turbine engines, engine rooms employ some means of providing air for the operation of the engines and associated ventilation.

If the energy produced by the combustion is higher or equal to the quantity of energy required for the combustion, the reaction is then self-sustainable.

If combustion happens further back in the engine, the turbine stages can easily be damaged.

If there is incomplete combustion, toxic products such as carbon monoxide and nitrogen dioxide form.

If this is retarded past bottom dead center ( BDC ), then the compression ratio will change, altering the in-cylinder pressure-time history prior to combustion.

If one takes the middle number, 5, and multiplies it by 3 ( the base number of the magic square of three ), the result is 15, which is also the constant sum of all the rows, columns, and two main diagonals.

If engine installation takes 20 minutes, hood installation takes five minutes, and wheel installation takes 10 minutes, then a car can be produced every 35 minutes.

If the bad deeds outweigh the good, the bridge narrows down to the width of a blade-edge, and a horrid hag pulls the soul in her arms, and takes it down to hell with her.

If the celebration takes place outside of Mass, it can be held in the home, in a hospital or institution, or in church.

If the joining of monomers takes place at such a carbon atom, the free hydroxy group of the pyranose or furanose form is exchanged with an OH-side-chain of another sugar, yielding a full acetal.

If the opponent takes, the cube, now showing the doubled stake, is moved to the opponent's side of the board.

If the relative priorities of these substituents need to be established, R takes priority over S. When this happens, the descriptor of the stereocenter is a lowercase letter ( r or s ) instead of the uppercase letter normally used.

If the addition of a functional group takes place at the less substituted carbon atom of the double bond, then the electrophilic substitution with acids is not possible.

* If the offence fails to make ten yards in three plays, the defence takes over on downs.

* If the offence attempts a forward pass and it is intercepted by the defence ; the defence takes possession immediately ( and may try to advance the ball on the play ).

If Pierre takes a second bite, it is not caused by his pleasure from the first ; If Pierre says, " That was good, so I will take another bite ", his speech act is not caused by the preceding pleasure.

If the outcomes x < sub > i </ sub > are not equiprobable, then the simple average ought to be replaced with the weighted average, which takes into account the fact that some outcomes are more likely than the others.

If evaporation takes place in an enclosed area, the escaping molecules accumulate as a vapor above the liquid.

" If a dependent variable takes a while to fully absorb a shock.

A former senior product manager at Master Lock, a trigger lock manufacturer, was quoted as saying “ If you put a trigger lock on any loaded gun, you are making the gun more dangerous .” Critics also point out that a trigger lock will increase the time it takes a gun owner to respond to a self-defense emergency.

If one takes the median of 17 of these 22 compositions for rockets ( 75 % nitrates, 9. 06 % sulfur, and 15. 94 % carbon ), it is nearly identical to the modern reported ideal gunpowder recipe of 75 % potassium nitrate, 10 % sulfur, and 15 % carbon.

If you push on a wall, it takes a fraction of a second before you apply the full push.

If G is any subgroup of GL < sub > n </ sub >( R ), then the exponential map takes the Lie algebra of G into G, so we have an exponential map for all matrix groups.

If one takes the experimentally observed flow around an airfoil as a starting point, then lift can be explained in terms of pressures using Bernoulli's principle and conservation of mass.

If the inheritance from to and the inheritance from to are both marked "" ( for example, ""), C ++ takes special care to only create one object, and uses of's members work correctly.

If only the second and third conditions of the definition of measure above are met, and takes on at most one of the values, then is called a signed measure.

If someone were to drop a match in here, this place would go up like a haystack ''.

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 you mail A return or tax payment, you must place it in the mails in ample time to reach the district director on or before the due date.

If you file a Form 1040, you should indicate in the place provided that there is an overpayment of tax and the amount you want refunded and the amount you want credited against your estimated tax.

If you have neither a legal residence nor a principal place of business in any Internal Revenue district, your return should be filed with the District Director of Internal Revenue, Baltimore 2, Md..

If your principal place of abode for the tax year is outside the United States ( including Alaska and Hawaii ), Puerto Rico, or the Virgin Islands and you have no legal residence or principal place of business in any Internal Revenue district in the United States, you should file your return with the Office of International Operations, Internal Revenue Service, Washington 25, D.C..

If a human figure or wild life are to be part of the projected final picture, I try to place them in the initial sketch.

If you drive greater distances than that, you'll just be skimming the surface and will never discover the enchantment, fascination and beauty which lured you in the first place to explore the hinterlands.

If we manage to keep track of a Bombus queen after she has left her feeding place, we may discover the snug little hideout which she has fixed up for herself when she woke up from her winter sleep.

If such an unlikely transaction were to take place, it would more logically be accomplished by a stock purchase, followed by the prosecution of the claim by the wholly-owned subsidiary, followed by liquidation.

If a child loses a molar at the age of two, the adjoining teeth may shift toward the empty space, thus narrowing the place intended for the permanent ones and producing a jumble.

If baby teeth are retained too long, the incoming second teeth may be prevented from emerging at the normal time or may have to erupt in the wrong place.

`` If teeth are moved too rapidly, serious injury can be done to their roots as well as to the surrounding bone holding them in place '', explains Dr. Brodie.

If communication with an entity on the `` other side '' is taking place, this too may assume the form of clairvoyant symbolism.

If it is owned, taxes must be paid, and if the place is not free of mortgage, there will be interest and payments on the principal to take care of.

If you are not well acquainted with the area in which you wish to locate, or if you are not sure that you and your family will like and make a success of farming, usually you would do better to rent a place for a year or two before you buy.

If this must be done, they should always be corked and kept in a cool place ; ;

If laborers are merely commodities competing against each other in a market place like so many bags of wheat and corn ( unsupported, by the way, by any agricultural subsidy ), then they may be pardoned for reacting with complete antagonism to a system that imposes such status upon them.

If threats are insufficient, chest to chest tussles may take place.

If the Labours precede the events in Roger Ackroyd, then the Roger Ackroyd case must have taken place around twenty years later than it was published, and so must any of the cases that refer to it.

If Asgard is an earthly place, not there.

If the first team misses twice, the other team is awarded the opportunity to place the jack anywhere they choose within the prescribed zone.