Joule is the metric system unit to measure the energy in food, however we still see calories being used everywhere, specially advertising and fitness influencers. Let’s stop this nonsense.
Joule is the metric system unit to measure the energy in food, however we still see calories being used everywhere, specially advertising and fitness influencers. Let’s stop this nonsense.
No?
They are the same thing. They just use different starting points.
Meters per second and kilometers per hour are both the same system, called the metric system.
What are you on about? Seconds, hours and days are all part of the same system.
Actually yes. 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 / 100 cm =
0.001 cm^3 / 1 cm =
0.001 cm^2 =
0.1 mm^2
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.
If you’re gonna correct someone, be correct.
Your further simplification ignores that one of the units is cubed.
What do you mean? I wrote cubed as ^3 throughout the entire explanation.
You edited your comment 16 minutes ago. When I wrote my reply you had your units wrong.
Yes. I eventually noticed my mistake and corrected it. 👍Thanks for pointing it out.
hour are not a metric unit though?
Hour isn’t the SI unit for time, but it is still accepted as a non-SI unit within the metric system.
https://metricsystem.net/non-si-units/units-whose-names-include-non-si-units/kilometre-per-hour/