The most accurate and scientific is the kelvin scale and the SI unit of temperature and maybe their were different scales used in different countries but why use all three of them everywhere. Like we can use USA using miles while other countries use kilometer. But they both are not used at a single time at a single place. But why use 3 scales at once?
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We don’t. Most people use Celcius, a few people use Fahrenheit, a few more use Kelvin. No different to anything else, like miles/kilometres.
> The most accurate and scientific is the kelvin scale
No it’s not. They’re all as accurate as each-other, because decimals exist. They can all be as accurate as you want, depending on how many digits you write.
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