Mnemonics
Morse code
Alphabets
| Alphabet | Mnemonic | Morse code |
|---|---|---|
| A | aPART | • - |
| B | BOOT to the head | - • • • |
| C | CO-ca CO-la | - • - • |
| D | DOCK WORK-er | - • • |
| E | eh? | • |
| F | get a HAIR-cut | • • - • |
| G | GOOD GRAV-y | - - • |
| H | hip-pi-ty hop | • • • • |
| I | i-i | • • |
| J | lets JUMP JUMP JUMP | • - - - |
| K | KAN-ga-ROO | - • - |
| L | he LOST his lid | • - • • |
| M | MMMM-MMMM | - - |
| N | NA-vy | - • |
| O | ONE OF US | - - - |
| P | a POO-py smell | • - - • |
| Q | GOD SAVE the QUEEN | - - • - |
| R | ro-TA-tion | • - • |
| S | si-si-si | • • • |
| T | TALL | - |
| U | un-der-WHERE?! | • • - |
| V | Beet-ho-ven's FIFTH | • • • - |
| W | a WHITE WHALE | • - - |
| X | X marks the SPOT | - • • - |
| Y | WHY did I DIE? | - • - - |
| Z | ZINC ZOO-keep-er | - - • • |
Numerals
| Numeral | Morse code |
|---|---|
| 1 | • - - - - |
| 2 | • • - - - |
| 3 | • • • - - |
| 4 | • • • • - |
| 5 | • • • • • |
| 6 | - • • • • |
| 7 | - - • • • |
| 8 | - - - • • |
| 9 | - - - - • |
| 0 | - - - - - |
Characters
| Character | Syllabic mnemonic | Morse code |
|---|---|---|
| . | a STOP a STOP a STOP | • - • - • - |
| , | COM-MA, it's a COM-MA | - - • • - - |
| ? | it's a QUESTION, is it? | • • - - • • |
| : | HA-WA-II stan-dard time | - - - • • • |
| / | SHAVE and a HAIR-cut | - • • - • |
| " | six-TY-six nine-TY-nine | • - • • - • |
| ' | and THIS STUFF GOES TO me! | • - - - - • |
| ; | A-list, B-list, C-list | - • - • - • |
Major system
| Numeral | Associated letters | Mnemonic |
|---|---|---|
| 1 | t, d | 1 looks like a t |
| 2 | n | n has 2 vertical bars |
| 3 | m | m has 3 vertical bars |
| 4 | r | Four ends with r |
| 5 | l | Roman numeral L equals 50 |
| 6 | j, sh, ch, soft g | Uppercase G looks like a 6 |
| 7 | k, hard g, hard c | 7 is angular like the k |
| 8 | f, v, ph | Cursive f looks like an 8 |
| 9 | p, b | 9 looks like a backwards p |
| 0 | z, s, soft c | Zero starts with z |
NATO phonetic alphabet
Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu
Programming
-
CSS margin: TRouBLe (Top Right Bottom Left)
.class { margin: T R B L } -
JavaScript
unshiftvsshift:unshiftis longer. Makes the array longer.shiftin shorter. Makes the array shorter.
Misc
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Confronting a screw:
Righty-tighty, Lefty-loosy or Right on, Left off
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Identifying coral snakes:
Red touches yellow, kills a fellow. Red touches black, friend of Jack.
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Order of taxa in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species, [Variety]):
Dear King Philip Came Over For Good Soup.
-
Order of planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto):
My Very Easy Method Just Speeds Up Naming Planets.
For eight planets: My Very Easy Memory Jingle Seems Useless Now -
PANIC: Positive Anode Negative Is Cathode.
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The Great Lakes in order of largest to smallest (Superior, Huron, Michigan, Erie, Ontario):
Super Heroes Must Eat Oats.
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Euler's characteristic (X = F + V - E): fav.me (F add V, minus E)
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10 organ systems of the human body (Nervous, Integumentary, Circulatory, Endocrine, Respiratory, Digestive, Reproductive, Urinary, Muscular, Skeletal): NICER DRUMS
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Colors of rainbow (Red, Orange, Yellow, Green, Blue, Indigo, Violet): ROYGBIV
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Speed of light (299,792,458):
We guarantee certainty, clearly referring to this light mnemonic. (Counting the number of letters in each word)
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Increasing frequency or decreasing wavelength of electromagnetic waves (Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-Rays, Gamma Rays):
Rich Men In Vegas Use eXpensive Gadgets
Opposite order: Good Xylophones Use Very Interesting Musical Rhythms -
Number of days in each month (Thirty Days Hath September or Knuckle mnemonic):
Thirty days has September,
April, June, and November,
All the rest have thirty-one,
Save February at twenty-eight,
But leap year, coming once in four,
February then has one day more.I use the phrase SNAp June to remember September, November, April and June.
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Trigonometric ratios (Sine = Opposite / Hypotenuse, Cosine = Adjacent / Hypotenuse, Tangent = Opposite / Adjacent): SOH-CAH-TOA
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Sign of each trigonometric functions in each quadrant of the plane: All Students Take Calculus or ASTC
- Quadrant I: All trigonometric functions are positive.
- Quadrant II: Sine and cosecant functions are positive.
- Quadrant III: Tangent and cotangent functions are positive.
- Quadrant IV: Cosine and secant functions are positive.
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Resistor color codes: Better Be Right Or Your Great Big Vacation Goes Wrong.
- 0 = Black
- 1 = Brown
- 2 = Red
- 3 = Orange
- 4 = Yellow
- 5 = Green
- 6 = Blue
- 7 = Violet
- 8 = Gray
- 9 = White
-
e (2.718281828459045)
- Andrew Jackson was the 7th president of the US: 7
- He was elected in 1828 and served two terms: 1828 1828
- His favorite type of triangle was the right angled isosceles triangle: 45 90 45