this post was submitted on 20 Jun 2024
621 points (98.6% liked)
JustGuysBeingDudes
863 readers
1 users here now
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Interestingly the watermelon (and other plants) don't quite eat the sunlight, but the chlorophyll in the plant uses the sunlight to get enough energy to steal the carbon atoms from the CO2 in the air. So your water melon is literally made out of thin air!
When you lose weight, it is literally breathed away out of your body into the air
Is that true, though? Your body needs energy for various tasks and those have different mechanisms of spending the energy. Muscles, for example, move, which creates heat. But that heat is not simply breathed out.
The heat is literally produced by oxidizing (burning) carbon that you then breathe out as carbondioxide.
Hit them with ye old oxidation trick
Producing heat isn't where the mass goes though - mass is conserved. You only lose mass to energy in a nuclear reaction.
Something has to go in there, if not losing energy to radiant heat transfer, then how e=m(c^2)?
I'm not sure what you mean by in there but yes, the heat would be transferred to the environment.
E=m(c^2) describes how much energy is contained in matter. It's useful for nuclear reactions, but your body isn't a nuclear reactor and you aren't consuming substantial quantities of radioactive isotopes, like uranium ore, that will decay on their own so it isn't relevant here.
Still energy is being radiated. A mass loss has to occur for that
Radiation of heat is done through em waves which are massless particles. Being in direct contact with the air will transfer heat via conduction, or particles vibrating against each other - which is how the vast majority of heat loss will occur.
You inhale O2, you exhale CO2. That carbon comes from something inside your body.
Well the nutrients come out of the soil, but yes it’s all “powered” by sunlight