> Degrees What? is a tool for converting temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K) and other scales. Is the description accurate? How to display Kelvin units or other scales?
Try landscape orientation.
Show HN: Degrees What?
51–60 of 124 posts
Re: Show HN: Degrees What?
#52Earlier quoted context omitted.
It's a challenge and it'll force you to ask what and why are you doing this for. There's "real life navigation" - these things matter at high and low latitudes, and near massive iron deposits such as Kursk, not so much elsewhere - although orienteering with magnetic compass only requires understanding of local deviations. There's also "teaching geodesy" - which might allow you to simulate changes of location etc. All…
> why are you doing this for Honestly, I just thought it would be an amusing way to convert temperature, and a subtle dig at people who don't use the correct units. I don't want people to use this as an actual compass, and get themselves lost because of it.
That's enough of a goal.
> I don't want people to use this as an actual compass
Hence the educational route option should you so choose.
Of course anybody running this on a mobile device will have full GPS and maps available.
Learning about reality is for those that want to navigate by actual compass and|or stars.
Re: Show HN: Degrees What?
#53Earlier quoted context omitted.
That seems to be taking a theoretical approach. I don't think there are any experiments that have proven it is possible?
Negative temperature is a perfectly normal and well-studied phenomenon with lots of common examples. Temperature is defined as the rate of change of entropy wrt internal energy, usually more energy means more entropy, but it's not a given. https://en.wikipedia.org/wiki/Negative_temperature
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Re: Show HN: Degrees What?
#54How is this literally a compass visualization and yet it has no mention of radians?
Re: Show HN: Degrees What?
#55Earlier quoted context omitted.
That seems to be taking a theoretical approach. I don't think there are any experiments that have proven it is possible?
Negative temperature is a perfectly normal and well-studied phenomenon with lots of common examples. Temperature is defined as the rate of change of entropy wrt internal energy, usually more energy means more entropy, but it's not a given. https://en.wikipedia.org/wiki/Negative_temperature
> A system with a truly negative temperature on the Kelvin scale is hotter than any system with a positive temperature. If a negative-temperature system and a positive-temperature system come in contact, heat will flow from the negative- to the positive-temperature system
Wait what?!! That feeds my daily “oh oooh” moment.
Re: Show HN: Degrees What?
#56Earlier quoted context omitted.
Most of my use of degrees is either in cooking or weather. Having a larger scale means more accuracy, seeing as we don't use decimals in either. I'm not saying it makes a ton of sense, but my only real defense of it. That said, I find negative units rather silly in most measurements, so we should really be using K I think.
> * Most of my use of degrees is either in cooking or weather. Having a larger scale means more accuracy, seeing as we don't use decimals in either.* That's your choice though. Outside temperature cannot be measured precisely enough to warrant decimals (it's supposed to be 17.4°C outside but who can tell the difference with 17°C or 18°C...) but my car's A/C is set to 21.5°C and my home's heating is set to 19.5°C.
I figure C is like F for cooking, correct me if I'm wrong. Everything is a multiple of 5, you'll never see bake at 372F or something odd. If C is the same way, that's probably pretty restricting.
Re: Show HN: Degrees What?
#57Re: Show HN: Degrees What?
#58Congrats on a good execution of a fun idea. The mobile UX feels very good. Also sorry to be that guy but: > when people specify a temperature in "degrees" when it’s not clear from the context which scale is being used. It should be degrees Celsius. Anything else is just insane ;)
Most of my use of degrees is either in cooking or weather. Having a larger scale means more accuracy, seeing as we don't use decimals in either. I'm not saying it makes a ton of sense, but my only real defense of it. That said, I find negative units rather silly in most measurements, so we should really be using K I think.
> we don't use decimals in either
Measuring body temperature with precision of 0.1°C is very common. In fact, I never saw an integer in this context.
Re: Show HN: Degrees What?
#59Earlier quoted context omitted.
Most of my use of degrees is either in cooking or weather. Having a larger scale means more accuracy, seeing as we don't use decimals in either. I'm not saying it makes a ton of sense, but my only real defense of it. That said, I find negative units rather silly in most measurements, so we should really be using K I think.
K is nice because between any X K and Y K such that 2*X = Y, the energy needed to go from one to the other doubles, too. You don't have this with C. 100°C -> 200°C is not 2x the energy.
Strictly speaking, that's not true. There might be phase transitions (which require additional energy) or the material's specific heat capacity might change with temperature, see https://en.wikipedia.org/wiki/Specific_heat_capacity .
Re: Show HN: Degrees What?
#60Disappointed not to see: 6: degrees of separation, at most, between any two people. Also, USA murder degrees: first, second, third. Another thing: the melting point of 60/40 solder is there; but not the eutectic mixture 63/37. Geeeeez!
I considered adding 6 degrees of separation, but couldn't think of a concise way to phrase it, then forgot about it.
If anyone has interesting temperatures or angles to add, please do!