Editing 2492: Commonly Mispronounced Equations
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==Explanation== | ==Explanation== | ||
− | + | {{incomplete|Created by a LAGRONJ EYSIBARYMOODMOOSIOYLERSIBRYMOOAMOOBAMOOSIMASIBRSIQORTFAHMOOVYFAHMOOVY. Please mention here why this explanation isn't complete: the elided equation in the incomplete notice needs explanation. It would be interesting for more people to weigh in on personal history eliding equations. Do NOT delete this tag too soon.}} | |
− | + | This comic is a collection of very commonly used physics and mathematical equations, along with their "correct" pronunciations. Equations are normally voiced out loud either by their names ("Mass–energy equivalence") or by saying the parts out loud using normal linguistic rules ("E equals M C squared"). This comic instead asserts that equations are meant to be said out loud like words, using their own set of phonic rules. | |
− | + | Though this premise may seem absurd, sometimes this kind of pronunciation is used as an abbreviation or a mnemonic device. For example, the equation A=Pe<sup>rt</sup> used for compound interest is commonly taught and pronounced as the "pert" equation, while SOH-CAH-TOA, spoken as one word, is used as a mnemonic for the definitions of the main trigonometric functions: sine = opposite/hypotenuse, cosine = adjacent/hypotenuse, and tangent = opposite / adjacent. | |
+ | |||
+ | Some nerds have both the trait of using equations as commonly as others might chat, and of finding it entertaining to make up new funny sounds ("input", "pwn"). Saying the equations more rapidly can speed up work or make work seem more enjoyable. This phenomenon is called {{w|elision}}. | ||
===Equations=== | ===Equations=== | ||
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|F = G(m₁m₂/r²) | |F = G(m₁m₂/r²) | ||
|Fuh-''JAM''-er | |Fuh-''JAM''-er | ||
− | | | + | |F, gravitational force, is pronounced /f/. G, the gravitational constant, is prononounced as a soft G /dʒ/. The m's (mass 1 and 2) are both pronounced /m/, and the r (radius) is pronounced /r/. The numbers are unpronounced. |
|- | |- | ||
|{{w|Mass–energy equivalence}} | |{{w|Mass–energy equivalence}} | ||
|E = mc² | |E = mc² | ||
|''EM''-cah-too | |''EM''-cah-too | ||
− | | | + | |E, energy, is pronounced as a short E /e/, m (mass) is pronounced /m/, c is pronounced as a hard C /k/, and the exponent "2" is pronounced "two". |
|- | |- | ||
|{{w|Pythagorean theorem}} | |{{w|Pythagorean theorem}} | ||
|a² + b² = c² | |a² + b² = c² | ||
|at-''BOOT''-coot | |at-''BOOT''-coot | ||
− | | | + | |The side length "a" is pronounced as a short a. The side length "b" is pronounced /b/. The hypotenuse "c" is pronounced as a hard "c" /k/. Each exponent 2 is pronounced /t/ for "two", and the vowel sound /u/ of "two" is used as the filler vowel sound. |
|- | |- | ||
|{{w|Area of a circle}} | |{{w|Area of a circle}} | ||
|A = πr² | |A = πr² | ||
|''APP''-er-too | |''APP''-er-too | ||
− | | | + | |A, the area, is pronounced as a short a. Pi is pronounced /p/. R is pronounced /r/. 2 is pronounced "two". For added bonus, this becomes very similar to the word "aperture", which can be described as just the area of a circle. |
|- | |- | ||
|{{w|Entropy_(information_theory)|Shannon entropy}} | |{{w|Entropy_(information_theory)|Shannon entropy}} | ||
− | |H = | + | |H = -Σpᵢlog(pᵢ) |
|Ha-''SPLOG''-pee | |Ha-''SPLOG''-pee | ||
− | | | + | |H, entropy, is pronounced /h/. The minus sign is unpronounced. Sigma, the summation sign, is pronounced /s/. The first pᵢ is pronounced /p/ with the subscript i unpronounced. log, the logarithm function, is pronounced "log" (like a piece of lumber). The second pᵢ is pronounced /pi/, where the subscript i makes the long e sound /i/. |
|- | |- | ||
|{{w|Ideal gas law}} | |{{w|Ideal gas law}} | ||
|PV = nrt | |PV = nrt | ||
|''PAV''-nurt | |''PAV''-nurt | ||
− | | | + | | |
|- | |- | ||
|{{w|Euler's identity}} | |{{w|Euler's identity}} | ||
− | |e | + | |e^(iπ) = -1 |
|''EYE''-pin | |''EYE''-pin | ||
− | | | + | | |
|- | |- | ||
|{{w|Newton's_laws_of_motion#Newton's_second_law|Newton's 2nd law of motion}} | |{{w|Newton's_laws_of_motion#Newton's_second_law|Newton's 2nd law of motion}} | ||
|F = ma | |F = ma | ||
|''FEE''-mah | |''FEE''-mah | ||
− | | | + | |The equal sign is pronounced as a long e. This becomes similar to FEMA, the {{w|Federal Emergency Management Agency}} in the United States. |
|- | |- | ||
− | |{{w|Wave equation}} ( | + | |{{w|Wave equation}} (c would conventionally be c²) |
− | |∂²u/ | + | |∂²u/∂t² = c(∂²u/∂x²) |
|''DOOT'' cah-''DOOX'' | |''DOOT'' cah-''DOOX'' | ||
− | | | + | | |
|- | |- | ||
|{{w|Derivative#Definition|Derivative}} | |{{w|Derivative#Definition|Derivative}} | ||
− | | | + | |f'(x) = lim(h→0) (f(x+h)-f(x))/h |
|''FAX''-lim-oh ''FAX''-uh-fox | |''FAX''-lim-oh ''FAX''-uh-fox | ||
− | | | + | | |
|- | |- | ||
|{{w|Quadratic formula}} | |{{w|Quadratic formula}} | ||
− | |x = ( | + | |x = (-b±√(b²-4ac))/2a |
|za-''BO''-ba fak-''TOH''-ah | |za-''BO''-ba fak-''TOH''-ah | ||
− | | | + | | |
|- | |- | ||
− | |{{w|Schrödinger equation}} | + | |{{w|Schrödinger equation}} for a Coulomb potential |
− | |Eψ = ( | + | |Eψ = -(ℏ²/2μ)∇²ψ - (q²/r)ψ |
− | | | + | |Epsihootamoo doopsiquorps |
− | | | + | |The form of the Schrödinger equation intended seems to be '''Eψ''' ''"epsi"'' = − '''(ℏ<sup>2</sup>/2μ)''' ''"hootamoo"'' '''∇<sup>2</sup>ψ''' ''"doopsi"'' - '''(q<sup>2</sup>/r)ψ''' ''"quorps"'' – where the 4πε<sub>0</sub> required by SI units is not present due to a more suitable unit convention. (μ is mu, ψ is psi, ∇ is the {{w|Nabla_symbol|nabla or del symbol}} and pronounced /d/ here.). |
|} | |} | ||
==Transcript== | ==Transcript== | ||
+ | {{incomplete transcript|Do NOT delete this tag too soon.}} | ||
[Each equation is bordered, with a pronunciation guide beneath.] | [Each equation is bordered, with a pronunciation guide beneath.] | ||
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'''''APP'''''-ER-TOO | '''''APP'''''-ER-TOO | ||
− | H = | + | H = -Σpᵢlog pᵢ <br> |
HA-'''''SPLOG'''''-PEE | HA-'''''SPLOG'''''-PEE | ||
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'''Row 3''' | '''Row 3''' | ||
− | e | + | e^iπ = -1 <br> |
'''''EYE'''''-PIN | '''''EYE'''''-PIN | ||
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'''''FEE'''''-MAH | '''''FEE'''''-MAH | ||
− | ∂²u/ | + | ∂²u/∂t² = c ∂²u/∂x² <br> |
'''''DOOT''''' CAH-'''''DOOX''''' | '''''DOOT''''' CAH-'''''DOOX''''' | ||
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'''Row 4''' | '''Row 4''' | ||
− | f'(x) = lim | + | f'(x) = lim h→0 f(x+h) - f(x) / h <br> |
'''''FAX'''''-LIM-OH '''''FAX'''''-UH-FOX | '''''FAX'''''-LIM-OH '''''FAX'''''-UH-FOX | ||
− | x = | + | x = -b ± √(b² - 4ac) / 2a <br> |
ZA-'''''BO'''''-BA FAK-'''''TOH'''''-AH | ZA-'''''BO'''''-BA FAK-'''''TOH'''''-AH | ||