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Re: On Quantity - Measurement relationship

  • From: Werner Keil < >
  • To: " " < >
  • Subject: Re: On Quantity - Measurement relationship
  • Date: Sat, 1 Nov 2014 16:48:12 +0100

Wikipedia also mentions "scalar", etc. but it is clearly in Mathematics
only, while Physical Quantities
http://en.wikipedia.org/wiki/Physical_quantity also mention these terms,
but mainly regarding formula notation.

On an API level I would not really use PhysicalQuantity, while say
implementing modules like JScience Physics, etc. may define something like
it to extend Quantity or Measurement/Amount.

On Sat, Nov 1, 2014 at 4:37 PM, Werner Keil 
< >
 wrote:

> That's part of the Spec, while some terms there (OK, "Measurable" was
> already purged[?]) may be influenced by JSR 275 or the prior Unit-API
>
> Quantity currently refers to Wikipedia:
> http://en.wikipedia.org/wiki/Quantity
> Quantities can be compared in terms of "more", "less" or "equal", or, by
> assigning a numerical value in terms of a unit of measurement
>
> They are both called Quantity here, and thus having a base type Quantity
> allowing those non-numerical terms like "more", "less", "heavy", "light",
> "blue", "red" or "green", "Medium", "X-Large", etc. (often best represented
> by enums) and then something like Measurement (assigning a numerical
> value in terms of a unit of measurement)
> we'd perfecly cover both magnitude and multitude (or a more general
> non-numeric form)
>
> Werner
>
> On Sat, Nov 1, 2014 at 4:17 PM, Martin Desruisseaux <
>  >
>  wrote:
>
>> Le 01/11/14 22:53, Jean-Marie Dautelle a écrit :
>> > Note: We see in that case that Quantity cannot implement Comparable.
>> > HEAVY/LIGHT may depend on the context, the boundary may not be well
>> > defined or be relative, e.g. we can compare HEAVY with LIGHT but not
>> > HEAVY with another mass).
>> Right. But HEAVY and LIGHT are not "quantitative measurement". This
>> bring us back to my original question: what is our definition of Quantity?
>>
>> Guys, I feel that before to continue any further in this discussion, we
>> need to write a "Definition of terms" page.
>>
>>     Martin
>>
>>
>

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Re: On Quantity - Measurement relationship

(continued)

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Jean-Marie Dautelle 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Martin Desruisseaux 11/01/2014

Re: On Quantity - Measurement relationship

Werner Keil 11/01/2014
 
 
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