im a land surveyor here in Argentina, i think that cipher are real cipher (check the concept,a codded mesage send to be recibed that could be decoded to deliber the information), intead of that its a first strangely decoded by harden with anomalies in the papers he present to media and then hiding… and the 340 "cypher" is likely an ovelay of the grim card with colect slaves… so.
About the radians, i think all the mount diablo is a delusion, but as i respect a quiet much the efford from the people working that i wish to make a suggestion. Radians are quiet unused angle mesure unit. The propieties interesting becoming of the relation of the arc and radius is used in mathematical demostrations, but not in for example civil engineering. As its well know the misspelling words from zodiac (like me now jaja) could be posible would be refering to gradians (complete turn on the circle of 400grad), this have some sense. Even with the "spcecial zodiac symbol" send in one of the 6ht/6 bomb letter could be realted if theres something about those instructions.
I hardly bealive the angels he was referring were radians realy, even be me the first to say that the arguments that many few people should know "what a radian is" is absurd argument.
Other topic, the magnetic north: Dislike many people have done serching a "flying angle", when he tis refering to a "refered angle" , refered to who its the question, becose he attach a rosetta with "hours"in cardinal directions. Are angles mesured from zero in direct (mathematical mesure direction) or azimutal (clock direction)?
pages like http://www.zodiackillerfacts.com/radian.htm give even if they werent trying to do it, making confusion over the people that dont have to mesure normaly angules. Gradians even if its not used here or europe by the sexagesimal system 360°, and 60´and then 60.xxxx´´. Gradians uses decimals as fractional escales, but i dont think any mesure in a map of that scale could be mesure on any presition of 1 grad or even 1°.
i wanted to share this reflection about this stuff if its usefull for someone.
Hey aquelarrefox,
Some forum advice.
You might want to consider a spell correcter of some sort because some of your spelling errors are so epic that they manage to create confusion about what word you meant:
I hardly bealive the angels he was referring were radians realy
And format your text in manageable paragraphs please.
It is very hard to read and understand your reasoning just by the way you present it. You are saying that "radian" may be "gradian"?
yes that have much sense to me that radians
I’ve never been in the navy, but they do apparently use radians in navigation for something called "the radian rule," which is used to calculate the passing distance of other ships. No one knows whether he was in the navy or not, but maybe the cipher contains a math puzzle or a pair of values that can be used with the radian rule to find a location.
It’s also possible that Zodiac was a math nerd and that he was looking for an excuse to use a math reference. He legitimately seems to enjoy puzzles, and the Zodiac symbol could represent a unit circle as well as crosshairs (he’s even marked x’s on the circle as if they were coordinates). I really like the idea that the symbol could have multiple meanings, and (to me at least) it fits his personality. He also used the word "identity" in the 408 cipher letter, and identities are important in trigonometry. It’s kind of an interesting idea that instead of giving up his name, maybe he gave the reference to Zaroff, because he thinks of himself as being identical to him, like a trig identity. Like it’s more than just a creepy reference, it’s actually in some way his origin story.
I’ve never been in the navy, but they do apparently use radians in navigation for something called "the radian rule," which is used to calculate the passing distance of other ships. No one knows whether he was in the navy or not, but maybe the cipher contains a math puzzle or a pair of values that can be used with the radian rule to find a location.
It’s also possible that Zodiac was a math nerd and that he was looking for an excuse to use a math reference. He legitimately seems to enjoy puzzles, and the Zodiac symbol could represent a unit circle as well as crosshairs (he’s even marked x’s on the circle as if they were coordinates). I really like the idea that the symbol could have multiple meanings, and (to me at least) it fits his personality. He also used the word "identity" in the 408 cipher letter, and identities are important in trigonometry. It’s kind of an interesting idea that instead of giving up his name, maybe he gave the reference to Zaroff, because he thinks of himself as being identical to him, like a trig identity. Like it’s more than just a creepy reference, it’s actually in some way his origin story.
you mean this https://blog.usni.org/posts/2020/07/06/three-questions-for-veterans-suffering-from-a-sleep-deficit
if you look it uses sexagesimal angles, mainly readeable by optics in ships or portables. i need to see why they call this way, but i mean its ineteresting tip to see.
Yeah, that’s the one. I think it’s called the radian rule because the output distance approximates the arc of a circle calculated using radians, and if that’s the case, then it does make sense. You have a good point though, that it looks like they actually use sexagesimal when they’re doing the calculation. Personally, I kind of lean towards him being a math nerd, but the Wing Walker shoe print makes the naval reference to radians seem potentially important.
[EDIT] So, it looks like the radian rule is named for the fact that they use one radian to do the calculation, and a radian is defined as 60 degrees for simplicity, rather than 57.296 degrees. I imagine his clue would have been intended to be used with the Phillips 66 map, and calculated by hand using a compass and ruler. Inches along the radians kind of makes sense if he actually just meant inches along the arc of a circle. Also, here’s a radian rule table (which is kind of useless for this, but it shows that a radian is approximated as 60 degrees):
Yeah, that’s the one. I think it’s called the radian rule because the output distance approximates the arc of a circle calculated using radians, and if that’s the case, then it does make sense. You have a good point though, that it looks like they actually use sexagesimal when they’re doing the calculation. Personally, I kind of lean towards him being a math nerd, but the Wing Walker shoe print makes the naval reference to radians seem potentially important.
[EDIT] So, it looks like the radian rule is named for the fact that they use one radian to do the calculation, and a radian is defined as 60 degrees for simplicity, rather than 57.296 degrees. I imagine his clue would have been intended to be used with the Phillips 66 map, and calculated by hand using a compass and ruler. Inches along the radians kind of makes sense if he actually just meant inches along the arc of a circle. Also, here’s a radian rule table (which is kind of useless for this, but it shows that a radian is approximated as 60 degrees):
The propiety used is that the sin x aprox x in radians. Imput table is in degree, in the calculation convert to radiand and calculate and use pytagoras, you could make the calculation by hand, and get a good aproximation very fast. the scare root could be taken by a logaritmic ring or ruler or a logaritmic table. In operation the table is faster of course
Ordinarily yes, you’d be using sin(θ), but if you look at the formula, they’re actually approximating the arc length of a circle when they do the calculation by hand. I’m kind of rusty with trig, but from what I remember, it makes sense.
This is the important part –> The radian rule formula is R*θ/60
R is the distance to the object (which is the same as the radius), θ is the angle relative to their direction of travel, and 60 is an approximation of one radian.
The formula for the arc length of a unit circle that subtends the angle θ is 2π*(θ/360). Reduce that to θπ/180, which is the same as θ/(180/π) or… θ divided by one radian. They approximate 1 radian as 60, which is why (I’m pretty sure) it’s called the radian rule, and why I would assume a sailor taught to use it would understand the concept of a radian.
I could be wrong about the way it’s explained in the navy, but the formula approximates an arc length using 60 as one radian.
I guess my point is, even though a lot of people probably don’t know what a radian is, a sailor in the 1960s might. Before computers and calculators, ordinary people relied on understanding concepts that many of us have a hard time with today.
I understand some of the points you made, but I’m still trying to digest the rest of your post. It’s interesting that gradians are more commonly used by engineers, can you give an example of how gradians would’ve been used by Zodiac?
I believe gradians are used in civil. Generally with elevation?
Radians in mathematics and engineering, mostly controls.
Engineering also uses degrees and starts from "East" counterclockwise.
Angles in degrees are used in manufacturing of parts and surveying.
Surveying starts at North and goes clockwise.
Manufacturing is relative degrees and uses included angles.
(I reserve the right to be wrong; and to commit the wrong of being right.)
For your health: Take iodine and Vitamin D (which isn’t a vitamin) and cut out most simple and complex carbohydrate and move to a Keto diet. Do it over time. You’ll thank me later.
I believe gradians are used in civil. Generally with elevation?
Radians in mathematics and engineering, mostly controls.
Engineering also uses degrees and starts from "East" counterclockwise.
Angles in degrees are used in manufacturing of parts and surveying.
Surveying starts at North and goes clockwise.
Manufacturing is relative degrees and uses included angles.
(I reserve the right to be wrong; and to commit the wrong of being right.)
AS far i know us is one of the few places were its used instead of sexagesimal system, mybe in some civil ingeneering speciffic stuff (i bealive a i saw in some road desing things in uk or france, but very rare,
An thats true, azimut reads colockwise, its how normaly the angules from north or magnetic north (curso in spanish, i bealive its corse too in english in general speaking). I only mesure angules counterclocckwise in mathematical fomrulas doing conversion in matlab becose 360-az was faster to hangle that original az.
in zodiac notes theres no reference how to mesure that angules, as far i know.
good commment gammaray
