Accepted Solutions
@ValeryOchkov wrote:
It will good to have in Mathcad new temperature units. Allen Razdow will be glad!
No!
I'm Spartacus!
Stuart
(No, the dulong isn't a real unit, AFAIA - it seemed a small thing to add it)
@AlanStevens wrote:
In spite of Stuart's scepticism, plasma physicists sometimes use eV as a measure of temperature!
(though I tend to share his scepticism!).
It's not so much cynicism as the opposite of "a rose by any other name". My degree was in astrophysics, so I'm quite used to seeing plasma temperature, energy, and mass all expressed in eV (lots and lots of them!). Hence my "I'm Spartacus" reference.
I don't mind this overloading as long as it's clear that an eV is not an eV and is most assuredly not, under any (conceivable or inconceivable) circumstance an eV. It was bad enough missing Mars because SI and Imperial got confused. Imagine getting your calculations wrong by a magnitude in the order of Boltzmann's constant ...
Also bear in mind that according to the BIPM, they of SI fame, there is only one true eV (energy) and even then they'd rather see it, and its fellow non-SI units, ablaze on posts lining the streets to Paris.
Stuart
Image from
https://atlas.cern/discover/physics/higgs
SI Brochure, Edition 9, p146:
(g) The electronvolt is the kinetic energy acquired by an electron in passing through a potential difference of one volt in vacuum. The electronvolt is often combined with the SI prefixes.
@ValeryOchkov wrote:
Это знает каждый ребенок в России.
But Russia is neither the home of the BIPM nor the LHC! 😉
Still, I would probably have written,
😈
Stuart
Sorry, Stuart,
I see Kelvin (?) and a submarine
What it it a submarune here?
I have someone (the world's largest) as UBS-device:
@ValeryOchkov wrote:
Sorry, Stuart,
I see Kelvin (?) and a submarine
What it it a submarune here?
I have someone (the world's largest) as UBS-device:
Hmm ... Severodvinsk? I think you've been sold a fake, Valery. Looks more like a Sierra Class to me (Барракуды or кондор). It would have been nice if the USB port popped out where the escape pod (спасательная капсула) would be on the sail ... 😎
Stuart
@StuartBruff wrote:
@ValeryOchkov wrote:
Это знает каждый ребенок в России.
But Russia is neither the home of the BIPM nor the LHC! 😉
Still, I would probably have written,
😈
Stuart
Stuart!
And what about this submarin?
@ValeryOchkov wrote:
Still, I would probably have written,
😈
Stuart
Stuart!
And what abot this submarin?
Nothing fishy about it ... look at the Кодификация НАТО of the submarine class.
Stuart
@胜王 wrote:
HOW CAN I DO THIS (IMAGE AS UNITS)
Adding to Valery's reply, here's how I "wrote" my image as a multiplier and unit:
I've selected the regions so that it's easier to see that the unit (kilokelvin) is a pair of images posted next to a (40-point) equation. A normal 11-point definition is shown for scale.
If you wanted to, you could try using a font editor to create images as characters.
Stuart
@ValeryOchkov wrote:
At the exam.
- What is horsepower - hp in Mathcad?
- This is the power that a horse develops, weighing one kilogram and one meter tall.
- Where have you seen such a horse?
- It's so easy to see. It is kept in Paris - in the BIPM.
😉
It's actually a Shetland Pony.
I believe it's now been redefined in terms of the coarse structure constant.
Both the British and the Americans still measure its speed in gallops per mile, though.
Stuart
(By Mark Robinson - originally posted to Flickr as Remind You Of Anyone?, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=10939300)
