NorskSudThe EU should use Joules not calories
TamlynEvery food should have Joules information besides calories. So it’s not really a law problem, just how most people use it.
quediuspayuEvery food already have joules besides of calories.
Every packaging in the EU already includes kilojoules as unit for energy content of food.
You can’t force influencers to use them, you can only force companies and government bodies.
And in some cases, using metric would simply be worse in daily life.
Like using Kelvin instead of Celcius, meters per second instead of kilometers per hour, seconds in general instead of hours and days…
Fun fact: The fuel consumption of a car that needs 10 litres / 100 km (24 miles per gallon) could be simplified to 0.1mm^2^ .
Is it metric? Yes. Is it practical? Not really.
You can’t force influencers to use them, you can only force companies and government bodies.
And in some cases, using metric would simply be worse in daily life.
Like using Kelvin instead of Celcius, meters per second instead of kilometers per hour, seconds in general instead of hours and days…
Fun fact: The fuel consumption of a car that needs 10 litres / 100 km (24 miles per gallon) could be simplified to 0.1mm^2^ .
Is it metric? Yes. Is it practical? Not really.
Hiro8811Celsius is basically the same as Kelvin, it just puts 0 in a different place.
See Wikipedia:
By definition, the Celsius scale (symbol °C) and the Kelvin scale have the same magnitude; that is, a rise of 1 K is equal to a rise of 1 °C and vice versa, and any temperature in degrees Celsius can be converted to kelvin by adding 273.15.[1][5]
Most people that know what Kelvin is also know that is the same scale as Celsius, but that doesn’t mean its equally is convenient in everyday use.
The single best thing about the Celsius scale (and pretty mich the only thing that makes it better than Fahrenheit except of familiarity) is that 0°C is placed at the most impactful Temperature point for normal people.
Your title says the EU should use Joules.
The EU already does use Joules for food.
Not sure what you mean. Influencers aren’t the EU.
The EU already does use Joules for food.
Not sure what you mean. Influencers aren’t the EU.
And in some cases, using metric would simply be worse in daily life.
No?
Like using Kelvin instead of Celcius
They are the same thing. They just use different starting points.
meters per second instead of kilometers per hour
Meters per second and kilometers per hour are both the same system, called the metric system.
seconds in general instead of hours and days
What are you on about? Seconds, hours and days are all part of the same system.
Fun fact: The fuel consumption of a car that needs 10 litres / 100 km (24 miles per gallon) could be simplified to 0.1 mm2
Actually no. 10 L = 10 dm^3 = 10 000 cm^3. That means 10 L / 100 km = 10 000 cm^3 / 100 km.
To simplify further: 10 000 cm^3 / 100 km = 10 cm^3 / 100 m = 0.1 cm^3 / 1 m = 0.1 cm^2
0.1 cm^2 != 0.1 mm^2
Is it metric? Yes. Is it practical? Not really.
It was already metric from the start before any mathematical simplification was done, so the metric system was definitely practical here.
Is the simplest mathematical form always the same as the simplest practical form? Definitely not, but that has nothing to do with the metric system.
Anikikilometers per hour are both the same system, called the metric system.
hour are not a metric unit though?
If you’re gonna correct someone, be correct.
Your further simplification ignores that one of the units is cubed.
Your further simplification ignores that one of the units is cubed.
You seem to confuse metric with SI units. And prefixes for the base units (like km instead of 1000m) do exist in the SI system.
Celsius, l/100km, and kph are still all metric.
sockinggoodDo you also want to use metric for time of day?
Calories for food is more understandable for people I think. But personally I welcome metric everywhere.
Calories are metric. This is like wanting people to switch to Kelvin instead of Celsius.
I’d be down for base 10 time.
Why? It is quite a round number. 1 calorie raises the temperature of 1 gram of water by 1 degree
Why would I need the energy of a biscuit as electrical energy? In a case like that I guess that I’ll multiply by 4.whatever and get joules.
Counter question: Why would I need to know how many grams of water I can raise the Temperature by one degree with the food I eat?
For the same practical reason I would need the mechanical energy of a carrot.
Wait wait, I got it! How many biscuits do I need to burn to boil the carrot?
The energy needed to heat water also has no practical relevance in your everyday life, and calories are not inherently easier. If everything had always been in kJ, you would find it just as intuitive.
I know
But calories are metric!
" the heat energy needed to raise the temperature of 1 gram of water by 1 °C "
From Wikipedia:
However, the calorie is not part of the International System of Units (SI), and is regarded as obsolete,[2] having been replaced by the SI derived unit of energy, the joule (J),[9] or the kilojoule (kJ) for 1000 joules.
Calories are CGS units, which is a metric system.
What you want to argue is that they are not SI units.
Metric ≠ SI
MubelotixNo, it doesn’t
relevant citation, highlighting by me:
The centimetre–gram–second system of units (CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.
Thought I was in unpopular opinion for a second there. Sorry, I meant for a 1/60th of a minute.
Actually, the second is the base unit.
Which is particurlaly funny given that it was abolished when the metric system was created. During the revolution, we decided we would have decimal time instead of those ancient babylonian units. It was reverted a few years later, but the metric system was originally designed for having 100k seconds per day
Can you explain the maths on that?
I thought 1 Joule equals 1 Watt for 1 second. 8 MJ = 8000000 Ws. If you divide by 3600 (60 * 60), you get ~2222 Watt hours or 2.222 kWh.
Is this discussion imported from the US? It reads like a redneck objecting to the metric system purely out of habit, while shouting “We’re American! metric is nonsense!!!1!”
What practical advantages does using joules offer over calories?
Joules is the correct and accurate unit. Calories are used out of habit despite being a less optimal unit not endorsed by science. So it’s weird to be called a redneck for stating that.
PS: and no, this is not imported from the US where no one has ever heard of joules. Joules are however commonly used in some countries already, so there’s hope.