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Noah's Notes

Mr. Croft, potato is not Latin for "king of the peanut". It's actually from the Greek, "pœtæΩ", which translates to "God of all nuts". Your God; my God; the God of us all.

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self description

For a corporate bio page a job once asked for three words that describe myself. Not three sentences. Just three words. I thought the following sounded funny, gumptious sagacious pulchritudinous. Not all true at the same time, but none were needed for the job, so it hardly mattered.

gumptious
alert, eager, resourceful
sagacious
sage, wide, good judgement
pulchritudinous
pretty

md5sum of nothing

d41d8cd98f00b204e9800998ecf8427e

NOAH ASCII hex

4E4F4148
4E:4F:41:48
4E 4F 41 48
 HEX: 0x4E
 DEC: 78
 OCT: 0116
 BIN: 0b1001110
 BIN: 01 00 11 10
PAR0: 0
PAR1: 1
 STR: 'N'
v ^
 v
> <

HEX: 0x4F
DEC: 79
OCT: 0117
BIN: 0b1001111
BIN: 01 00 11 11
PAR0: 1
PAR1: 1
STR: 'O'
v ^
 >
> >

HEX: 0x41
DEC: 65
OCT: 0101
BIN: 0b1000001
BIN: 01 00 00 01
PAR0: 0
PAR1: 0
STR: 'A'
v ^
 ^
^ v

HEX: 0x48
DEC: 72
OCT: 0110
BIN: 0b1001000
BIN: 01 00 10 00
PAR0: 0
PAR1: 0
STR: 'H'
v ^
 ^
< ^
^  00
v  01
<  10
>  11

LLAP

\\//_

\V/_

\\ //
 \V/_/

  \\ /,
 \_\V/

\\  //
 \\//_/

\\ //
 \U/_/

2nd Derivative

Some of these projects warrant merit whereas the rest merit a warrant.

Profound or confounding?

2014-12-19

Physics

All the physics equations on one handy page: physics equations.

Some Useful Unicode Symbols

In Linux you can enter Unicode hex values directly by holding ctrl and shift while typing u followed by the 4 digit hex value of Unicode character. You hold ctrl and shift for the entire sequence. So <ctrl-shift>U221E will produce the infinity sign, .

In Mac OS X to enter Unicode you go to System Preferences | Keyboard | Input Sources. Then click + to add a keyboard input source. Select and add the "Unicode Hex Input". To find this input source use the search box rather than trying to scroll though the lists (If you insist, it is under Other at the very end, after Welsh, and not in alphabetical order). Later you turn on the Unicode input method. Once activated you can type hex input by pressing and holding the Option (alt) key while typing hex values. Note that as of 2016-02-18 Mac OS X does not support hex codes longer than 4 digits. So, unfortunately, you can't enter the perfectly valid and official Unicode Vulcan salute, 🖖'U+1F596, but you can try to get by with ש (Hebrew letter shin, U+05E9).

See also:

Common characters that people often get wrong.

Some symbols look the same as their counterparts in the Greek alphabet, but these are actually seen as different in Unicode. These do not decompose as equivalent or compatible. For example, if you mean Ohm you should use the Ohm sign, not the Greek Omega. Probably this makes little practical difference in the real world. Any sort of semantic search indexing system probably has special cases for Greek letters used in other contexts. This can affect sorting and lexical indexing, but again, I can't think of any instance where this would actually cause a problem. Some fonts might be complete for some code points in the code space, but not others. I've not seen any that have the Greek letters, but not the Mathematical signs. So really, you want to use the correct symbol just to be correct, smartypants.

Ω 
Ohm sign, not Greek Omega, Ω. U+2126
µ 
Micro sign, not Greek Mu, μ. U+00B5

Characters that are commonly used, but are not common on most US keyboards.

π 
small Greek pi. U+03C0
∑ 
mathematical sigma. U+2211
Ω 
ohm. U+2126
µ 
micro. U+00B5
Å 
Ångström. U+212B
√ 
square root. U+221A
∫ 
integral. U+222B
∞ 
infinity. U+221E
aleph or alef. Most often used with subscript 0, as in 0, or aleph null, which is the cardinality of ω0 (countably infinite). U+2135
° 
Degree symbol. U+00B0
℉ 
Degree Fahrenheit. U+2109
℃ 
Degree Celsius. U+2103
Degree Kelvin. U+212A
ℎ 
Plank constant. U+210E
⎎ 
Hysteresis symbol. U+238E
€ 
Euro currency symbol. U+20AC
£ 
Pound Sterling. U+00A3
© 
Copyright symbol. U+00A9
™ 
Trademark Sign. U+2122
÷ 
divide. U+00F7
± 
plus-minus. U+00B1
≠ 
not equal. U+2260
≈ 
approximately equal. U+2248
⁰ 
superscript zero. U+2070
¹ 
superscript one. U+00B9
² 
superscript two. U+00B2
³ 
superscript three. U+00B3
⁴ 
superscript four. U+2074
⁵ 
superscript five. U+2075
⁶ 
superscript six. U+2076
⁷ 
superscript seven. U+2077
⁸ 
superscript eight. U+2078
⁹ 
superscript nine. U+2079
½ 
1/2. U+00BD
¼¾ 
1/4 and 3/4. U+00BC U+00BE
⅓⅔ 
1/3 and 2/3. U+2153 U+2154
⅕⅖⅗⅘
fifths. U+2155 through U+2158
⅙⅚
sixths. U+2159 U+215A
skull and crossbones. U+2620
radioactive sign. U+2622
biohazard sign. U+2623
♳ 
plastic code polyethylene terephthalate (PET or PETE). U+2673
♴ 
plastic code high density polyethylene (HDPE). U+2674

Some Useless Unicode Symbols

 ; 
Greek Question Mark. U+037E. Although this may be canonically decomposed to a real semicolon (U+003B), this is not required and I am not aware of any IDE text editors that automatically normalize Unicode. The Greek Question mark can really screw up C, C++, Java, and anything else that relies on semicolons for syntax. This may be taken as an invitation to mayhem.

Technical

  • MediaWiki version: 1.26.2
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  • Revision Timestamp: 20170612223353
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External Sites

Old Photos of San Francisco

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{{#random:Beasts of birden: a parrot is a beast of birden.


Touch the puppet head.


A gigantic nuclear furnace.


When in doubt, tell the truth.


I am entropy.


Less input. More output.


...bytes to bytes and bits to bits:

>/dev/null 2>&1

The truth shall make you free.


The arrows affected the aardvark. The effect was eye-popping.


Disaster's on its way, for sure,
For this libation is liqueur.


a wiki of every tech fact I have ever learned


Sometimes the fault isn't in the same spot as the failure.


There are 10 types of people in the world -- those that understand binary, and those that don't.


This is happening soonishly now...


1111111111 * 1111111111 == 1234567900987654321


“Not what we have, but what we enjoy, constitutes our abundance.” - Epicurus


Newbie says, "What?"
:(){:|:&};:

We are here to serve humanity. here to reaffirm gentility. Life away from fear to sanity. Carefully promote tranquility. Grant us neither gifts not gratitude.... -- The Monitors


"Why" -- a nasty little Protestant word. -- Bless me, Father.


}}