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Re: [lojban-beginners] how to translate "velocity"?



On 29 January 2013 11:15, la gleki <gleki.is.my.name@gmail.com> wrote:


On Tuesday, January 29, 2013 7:50:33 PM UTC+4, tsani wrote:
On 29 January 2013 04:03, la gleki <gleki.is...@gmail.com> wrote:
what is the word for "velocity" after all?
dont tell me it's {nilsutra}
velocity=length/time

(I hate-await)

latro'a and I devised a system for making arbitrary units in Lojban. Our system involves making a zi'evla for every unit you want, and defining it using a special kind of tanru. Working under the assumption that XI+PA forms #FREE, we created two experimental cmavo: {pi'ai} (KE) and {te'ai} (XI).

{pi'ai} is used as a prefix to indicate that the unit-selbri are being multiplied to form a new unit selbri. {te'ai} is used after a unit selbri to exponentiate it.
We can easily create the units for velocity, m*s^-1, with this system as follows: 
1) prefix the tanru with pi'ai; {pi'ai ...}*
2) determine the unit selbri that we need: {mitre} and {snidu}; {pi'ai mitre snidu}*
3) exponentiate accordingly; {pi'ai mitre snidu te'ai ni'u pa}

Because this new unit tanru is long, we need to make up a brivla for it based on its components ideally. To indicate that it was created with this method, we decided that prefixing it with pi'air- might be a good idea, but perhaps that the prefix can be dropped contextually.

{pi'airtredilsnidu = x1 measures x2 metres per second (by standard x3)}
= pi'ai mitre snidu te'ai ni'u pa

Some of you may hate this system, and that's okay. It's not like I approve of everything everyone does either.

I hate this system just because you have to create new zi'evla every time you use a new formula (yes, just like in natlangs!).
But speed is just "Length/time". Just a simple formula.

i.e. i wish someone could express Length/time, not speed in a concise way.


That comment makes me think that you didn't quite read the whole e-mail... Excuse me if you did.
I did introduce two experimental cmavo that allow us to multiply together unit selbri. (As for your Latin citation... I'm sorry, but multiplication is where baby units come from.)
The unit selbri for "length/time", with this system, is {pi'ai mitre snidu te'ai ni'u pa}. I am willing to bet that it is as concise as it's going to get for what it does, which is a lot.
This system is wonderful because it doesn't *require* the creation of lujvo *or* zi'evla. You would only do that if the unit is actually useful for every day purposes. (If it's only useful for one author in one super-technical paper, he or she can say {<complicated unit> cei <some temporary zi'evla>} and all is well.)
Also, as for "having to create new zi'evla every time you use a new formula, just like in natlangs", I think you're misunderstanding something about Lojban: knowing the gimste and the grammar like that back of your hand is not enough. Lojban vocabulary is extremely lacking in technical fields. Even only slightly technical fields. A word for "speed" wouldn't be a bad thing, you know. And neither would a word for every useful unit.

.i mi'e la tsani mu'o

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