# If P, then Q.

# If isotherms are concave towards the " north-east " direction ( 45 °), then adiabats are concave towards the " east north-east " ( 31 °).

# If adiabats and isotherms are graphed severally at regular changes of entropy and temperature, respectively ( like altitude on a contour map ), then as the eye moves towards the axes ( towards the south-west ), it sees the density of isotherms stay constant, but it sees the density of adiabats grow.

# If morality is objective and absolute, God must exist.

# If the beat on the new record hits before the beat on the current record then the new record is too fast, reduce the pitch and manually slow the speed of the new record to bring the beats back in sync.

# If the beat on the new record hits after the beat on the current record then the new record is too slow, increase the pitch and manually increase the speed of the new record to bring the beats back in sync.

# It's Not Funny If I Have To Explain It — 2004 ; strips from 1997 to 2004, with more of Adams ' handwritten notes

# I Can't Remember If We're Cheap or Smart — 2012

# If equals are added to equals, then the wholes are equal.

# If equals are subtracted from equals, then the remainders are equal.

# If the remainder from dividing N by 6 is not 2 or 3 then the list is simply all even numbers followed by all odd numbers ≤ N

# If the remainder is 2, swap 1 and 3 in odd list and move 5 to the end ( i. e. 3, 1, 7, 5 )

# If the remainder is 3, move 2 to the end of even list and 1, 3 to the end of odd list ( i. e. 4, 6, 8, 2-5, 7, 9, 1, 3 )

# If the design is symmetrical in an axis parallel to the flag pole, obverse and reverse will be identical despite the mirror-reversal, such as the Indian Flag or Canadian Flag

# If not, the obverse and reverse will present two variants of the same design, one with the hoist on the left ( usually considered the obverse side, see flag illustrations ), the other with the hoist on the right ( usually considered the reverse side of the flag ).

# If two straight lines in a plane are crossed by another straight line ( called the transversal ), and the interior angles between the two lines and the transversal lying on one side of the transversal add up to less than two right angles, then on that side of the transversal, the two lines extended will intersect ( also called the parallel postulate ).

# Associativity: If a * b and b * c are defined, then ( a * b ) * c and a * ( b * c ) are defined and equal.

# Identity: If a * b is defined, then a * b * b < sup >− 1 </ sup >

# If it persists, " gather facts and seek help.

# If the noun is animate, natural gender tends to dictate grammatical gender.

# If the borrowed word happens to have a suffix that the borrowing language uses as a gender marker, the suffix tends to dictate gender.

# If the borrowed word rhymes with one or more native words, the latter tend to dictate gender.

# If a project's spending becomes too much for a committee to continue funding, it must take the issue to the Project Committee.

# Affordable premium: If the likelihood of an insured event is so high, or the cost of the event so large, that the resulting premium is large relative to the amount of protection offered, it is not likely that the insurance will be purchased, even if on offer.

# If the German Armed Forces ( Wehrmacht ) were not in a position to break the danger from the Eastern front, then Nazi Germany would fall to Bolshevism, and all of Europe would fall shortly afterward ;

# The visual sense: the opsins use a photoisomerization reaction to translate electromagnetic radiation into cellular signals.

# The prevention of successful radio communications by the use of electromagnetic signals, i. e., the deliberate radiation, reradiation, or reflection of electromagnetic energy with the objective of impairing the effective use of electronic communications systems.

# For a telecommunications system, the spatial distribution of electromagnetic fields surrounding a given site.

# The resulting product of the power and time distribution, in various frequency ranges, of the radiated or conducted electromagnetic emission levels that may be encountered by a military force, system, or platform when performing its assigned mission in its intended operational environment.

# The power generated by a random electromagnetic process.

# A path for conveying electrical or electromagnetic signals, usually distinguished from other parallel paths.

# REDIRECT electromagnetic radiation

A large coilgun concept, a coaxial electromagnetic launcher firing projectiles Space_gun # Getting_to_orbit | to orbit.

# The ions are separated according to their mass-to-charge ratio in an analyzer by electromagnetic fields

# Static discharge could affect electronic equipment and either damage or cause inconsistent malfunction from electromagnetic waves.

# The physical attributes of a system or electronic component that will allow survival in an environment that includes nuclear radiation and electromagnetic pulses ( EMP ).

# REDIRECT electromagnetic four-potential

# REDIRECT Absorption ( electromagnetic radiation )

She does, however, appear in Birds of Prey # 113 ( January 2008 ), assisting Oracle by scanning the electromagnetic spectrum for any evidence that might lead her to the parties responsible for an influx of hi-tech weaponry being smuggled into Metropolis.

# Sandia Engineers test cruise missile to qualify W80-3 in electromagnetic environments ", Sandia Lab News ", April 14, 2006.

# REDIRECT electromagnetic tensor

# The GF Mechanism: An electromagnetic field device which can render large objects ( such as helicopters ) temporarily invisible and inaudible.

# The electromagnetic field tensor must satisfy the source-free curved spacetime Maxwell field equations and

# The Einstein tensor must match the electromagnetic stress-energy tensor,.