Yeah, "It is twice as hot today as it was yesterday."
0 degrees celsius + 0 degrees celsius -
31–40 of 81 posts
Re: 0 degrees celsius + 0 degrees celsius -
#32It looks like it must be using kelvin as its canonical units: 0C + 0C = 273.15 K + 273.15 K = 546.3 K = 273.15 C The weirdness is that conversions like that don't work for units that have different zero points. Perhaps addition of temperatures isn't really well defined? If 273.15 K + 273.15 K does not equal 0 C + 0 C, despite 273.15 K = 0 C, it's not clear what addition "means" in this context. One restricted form of…
A quick check of Wikipedia states: (http://en.wikipedia.org/wiki/Celsius)
Why technical articles use a mix of kelvin and Celsius scales
the degree Celsius is a special name for the kelvin for use in expressing Celsius temperatures, and
the magnitude of the degree Celsius is precisely equal to that of the kelvin
So based on that, it is permissible to do 0C == 273.15K.
Re: 0 degrees celsius + 0 degrees celsius -
#33It looks like it must be using kelvin as its canonical units: 0C + 0C = 273.15 K + 273.15 K = 546.3 K = 273.15 C The weirdness is that conversions like that don't work for units that have different zero points. Perhaps addition of temperatures isn't really well defined? If 273.15 K + 273.15 K does not equal 0 C + 0 C, despite 273.15 K = 0 C, it's not clear what addition "means" in this context. One restricted form of…
Seems it is easy enough to confuse even Wolfram Alpha http://www.wolframalpha.com/input/?i=0+degrees+kelvin+%2B+0+... Funnily enough the original query is handled well[1] by W|A: http://www.wolframalpha.com/input/?i=0+degrees+celsius+%2B+0... And the query that fails in Wolfram Alpha, works fine in Google's Calculator: http://www.google.com/search?sourceid=chrome&ie=UTF-8... :) 1: By "well", we probably mean accor…
That last one is odd. Should it not convert them first on the same base first? But then which on should it convert to? If you go for 0 celsius to 273.15 K then you'd get 0 K + 0 C = 273.15K if you do the other way you get -273.15 C. Whoa now I have a new tool to explain that AB is not always = BA to friend ;)
Re: 0 degrees celsius + 0 degrees celsius -
#34Digging a little deeper... (0 degrees Celsius) + (0 degrees Celsius) - (0 degrees Celsius) = 0 degrees Celsius (0 degrees Celsius) - (0 degrees Celsius) = 0 kelvin (0 degrees Celsius) + (0 kelvin) = 0 degrees Celsius The last 2 of the 3 are wrong, so I'd say this is definitley a bug. EDIT: I think I figured it out. It's converting everything after the first temperature to Kelvin, without converting the first temp to…
No.
It's converting EVERYTHING to K, then doing the arithmetic, then converting the result to C.
0C + 0C = 273K + 273K = 546K = 273C
0C + 0C - 0C = 273K + 273K - 273K = 273K = 0C
0C - 0C => 273K - 273K = 0K
0C + 0K = 273K + 0K = 273K = 0C
Re: 0 degrees celsius + 0 degrees celsius -
#35It looks like it must be using kelvin as its canonical units: 0C + 0C = 273.15 K + 273.15 K = 546.3 K = 273.15 C The weirdness is that conversions like that don't work for units that have different zero points. Perhaps addition of temperatures isn't really well defined? If 273.15 K + 273.15 K does not equal 0 C + 0 C, despite 273.15 K = 0 C, it's not clear what addition "means" in this context. One restricted form of…
You just screwed me all up.
32 F + 32 F = 64 F
0 C + 0 C = 0 C
HOWEVER it should equal about 17.78 degrees Celsius. Now we 17.78/2 = 8.89 C = 282.04 kelvin. That is suspiciously close the to 0 C = 273.15 K- however it is also not that close. My whole understanding of temperature has been flip upside down.
Wait. This is why I am not an engineer. If we add a glass of liquid that is at 0C/32F/273K to another glass of liquid that is at 0C/32F/273K the temperature will still be 0C/32F/273K. A better way to measure this would be in energy/joules gained/lost- we would also need volume, properties, ect. In this case we are trying to lower 0C by adding 0C. Since the water is already at 0C then there is no energy needed. You about blew my mind; I've never thought of temperature as a number line.
http://www.physicsforums.com/archive/index.php/t-185960.html
http://mathforum.org/library/drmath/view/64505.html
http://www.essex1.com/people/speer/heat.html
My next project will definitely have to be a temperature/volume/energy converter
Re: 0 degrees celsius + 0 degrees celsius -
#36It looks like it must be using kelvin as its canonical units: 0C + 0C = 273.15 K + 273.15 K = 546.3 K = 273.15 C The weirdness is that conversions like that don't work for units that have different zero points. Perhaps addition of temperatures isn't really well defined? If 273.15 K + 273.15 K does not equal 0 C + 0 C, despite 273.15 K = 0 C, it's not clear what addition "means" in this context. One restricted form of…
Google can actually differentiate between the two meanings: degrees Celsius and Celsius degrees . As you explained, the query posed by the title is meaningless, but 0 degrees Celsius + 0 Celsius degrees is handled correctly: http://www.google.com/search?&q=0+degrees+celsius+%2B+0+...
0 celsius degrees + 0 celsius degrees = 0 kelvin: http://www.google.com/search?q=0+celsius+degrees+%2B+0+celsi...
Re: 0 degrees celsius + 0 degrees celsius -
#37Ever tried to add two Unix Time values together? The results may look weird, but make sense if you know what you're actually adding.
Same here.
Re: 0 degrees celsius + 0 degrees celsius -
#38Temperature is an intensive quantity, not an extensive quantity.
Re: 0 degrees celsius + 0 degrees celsius -
#39The question is meaningless but google answers it in the best possible way
Arguably it oughtn't to answer it at all.
It's a bit like asking "Where do I end up if I start at Alpha Centurai and go one light year east?".
Re: 0 degrees celsius + 0 degrees celsius -
#40The question is meaningless but google answers it in the best possible way
I'd appreciate it more that it wouldn't answer it at all. Giving stupid answers to stupid questions is even stupider than asking the stupid question in the first place.