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Show HN: Degrees What?

degreeswhat.com

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Re: Show HN: Degrees What?

#81
post #71

Earlier quoted context omitted.

I was tempted to add device orientation for mobile, but figured people might think it was an actual compass, and AFAIK support is a bit spotty.

> device orientation for mobile On Google maps this is supposed to use the magnetometer to point the arrow in the correct direction, but it never works and nor does the stupid calibration phone-waving thing it asks you to do.

That sounds like either a fault with your device or misplaced expectations.

On my device the arrow points in approximately the correct orientation. (Plus minus ten-ish degrees.) If yours never work even to that level, even when you are away from magnetic sources then probably your device is faulty. (Do make sure you don’t have body worn magnets, or magnets in the phone case/holder of course.)

If it works to the same approximation, but you are expecting it to be more accurate then you should choose a different tool for the job.

Re: Show HN: Degrees What?

#82
post #7

The 'compass' setting is a minefield if done 'correctly' For the kinds of maps I coded for in the 1980's you'll want your compass rose to indicate * Geographic North (on, say a WGS84 ellipsoid) * Magnetic North (where a magnetic compass points, this varies by time and geographic location) * Rotational North (the spin axis of the planet - it walks a bit) This things can be added if you're looking for an additional ( p…

I was tempted to add device orientation for mobile, but figured people might think it was an actual compass, and AFAIK support is a bit spotty.

> figured people might think it was an actual compass

So you were concerned that people might get confused, yet you choose to mix angular and temperature degrees in the same interface?

An odd choice. I thought causing maximum confusion was the goal. (In a fun way, admitadly.)

Re: Show HN: Degrees What?

#83
post #5

Earlier quoted context omitted.

-40K are impossible AFAIK

Kelvin is not measured in degrees however, so is excluded by implication

Wait, so it's just "five Kelvin", not "five degrees Kelvin"? TIL.

Now that I think about, what's the etymological reason we use "degrees" to talk about temperature? We don't measure force in "degrees Newton" or electric current in "degrees Ampère". Why do we do it for Celsius and Fahrenheit?

Re: Show HN: Degrees What?

#84
post #63

Earlier quoted context omitted.

It's an obsolete name, but was official at one point.

What do you mean? It’s a different scale that has the same ‘unit length’ as Celsius, but it’s not the same. Also, it’s very much ‘current’ in the physics context.

They meant that the name "degree Kelvin" is obsolete (since 1967 according to Wikipedia), not that the unit of measurement itself is obsolete.

Re: Show HN: Degrees What?

#85

I always want to ask “degrees what?" I once worked on a system that ran at -40 degrees. I loved leaving off the scale when giving tours and telling about it, because someone would invariably ask if I meant Celsius or Fahrenheit and then everyone got to learn where the crossing point of the two scales is.

Funnily enough, the scale on the linked page doesn't allow me to set -40°. It jumps between -39.9 and -40.1

So seems like -40.0 is really where the singularity lies.

Either that, or a simple rounding issue. I choose to believe it's the former.

Re: Show HN: Degrees What?

#86

Congrats 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 ;)

I'm British and always used to think that Fahrenheit was stupid but I've warmed up to it (pardon the pun) after spending some time in the U.S.

Celsius is obviously more useful in a scientific context, but 99% of the time when I'm talking about the temperature, I'm not doing a scientific experiment, I'm asking "how hot/cold is it outside?" In that context I actually find Fahrenheit to be a more intuitively useful scale once you get used to it.

Celsius crams the entire range of likely outdoor temperatures into a narrow range with awkwardly-sized units that don't provide enough information. If someone tells me it's 15C outside, how many layers do I need to wear? I still don't have a good feel for it from the number alone, even after spending most of my life in countries where Celsius is the norm.

But in Fahrenheit, things make more obvious sense. 0 F means "insufferably cold", 100 F means "insufferably hot", and to get a meaningful idea of what the weather feels like on my skin, I just need the range: it's "in in fifties" or "in the seventies" etc.. It takes some getting used to, but I actually quite like it. Thanks, America!

(I'd also make a similar argument that feet and inches are a much more intuitively meaningful scale than centimetres for measuring human height. But that might be my British bias.)

Re: Show HN: Degrees What?

#87
post #85

I always want to ask “degrees what?" I once worked on a system that ran at -40 degrees. I loved leaving off the scale when giving tours and telling about it, because someone would invariably ask if I meant Celsius or Fahrenheit and then everyone got to learn where the crossing point of the two scales is.

Funnily enough, the scale on the linked page doesn't allow me to set -40°. It jumps between -39.9 and -40.1 So seems like -40.0 is really where the singularity lies. Either that, or a simple rounding issue. I choose to believe it's the former.

Remember that time when it was a rounding error?

https://www.theverge.com/tldr/2021/7/13/22575368/apple-ios-1...

Re: Show HN: Degrees What?

#88
For those who didn't know, Kelvin is already its own measurement. Think of it like on the same level as "meters" or "miles". You wouldn't say "500 degrees Kelvin", like you would 't say "50 amounts of meters".

This is because Kelvin, like meters/miles, are already a measurement of some physical feature, in this case of kinetic energy of the particles.

The word "degrees", on the other hand, does not represent a meaningful measurement of anything. It just means a given part of some arbitrary whole, defined by convention.

e.g. the "whole" of an angular degree is just a single complete rotation. The "whole" of a Celsius degree, I believe is the range that goes between water freezing (0°C) and boiling (100°C) points, and that's why it was also known as the centigrade scale.

Extra curiosity: still as of nowadays, if you say the complete temperature unit in Spanish, you don't say "35 degrees Celsius", you say "35 centigrade degrees" (35 grados centígrados). At least in a colloquial context; not sure how they'd say it in a science-related professional environment.

Re: Show HN: Degrees What?

#89

I always want to ask “degrees what?" I once worked on a system that ran at -40 degrees. I loved leaving off the scale when giving tours and telling about it, because someone would invariably ask if I meant Celsius or Fahrenheit and then everyone got to learn where the crossing point of the two scales is.

Yeah. When I worked in Antarctica this was often the temperature and it was quite convenient.

Re: Show HN: Degrees What?

#90

Congrats 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 ;)

I'm British and always used to think that Fahrenheit was stupid but I've warmed up to it (pardon the pun) after spending some time in the U.S. Celsius is obviously more useful in a scientific context, but 99% of the time when I'm talking about the temperature, I'm not doing a scientific experiment, I'm asking "how hot/cold is it outside?" In that context I actually find Fahrenheit to be a more intuitively useful scal…

Like you, I also find celsius more useful for knowing how hot some thing is while fahrenheit is more useful for knowing how hot some where is.

I also find inches, feet, miles etc. more intuitive than meters for basically everything. "so-and-so meters" or "such-and-such kilometers" doesn't describe anything to me, give it to me in inches/feet/miles so I can visualize the damn thing.

Moral I suppose is that metric is great for describing the universe, but the problem is we're dumb apes.

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