Recent comments in /f/explainlikeimfive

blissfulGeeky t1_j2aljgb wrote

A liter (L) is a unit of volume, while a kilogram (kg) is a unit of mass. The two units are not directly related to each other, as they measure different quantities.

To convert between liters and kilograms, you need to know the density of the substance you are measuring. Density is the mass of a substance per unit of volume. For example, if you have a liter of water, which has a density of 1 kilogram per liter, the mass of the water is 1 kilogram.

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Coubsauce t1_j2akwj2 wrote

Solstice has nothing to do with the orbit of the sun or proximity to the sun.

It is about the angle of the earth relative to the sun. The earth leans a bit. For half the year, the southern hemisphere faces the sun more directly, the other half the northern hemisphere faces it more directly.

Summer/winter Solstice marks when the lean is most head on/most leaning away to the sun for each hemisphere.

This happens on the same day each year because the lean is constant.

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