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Joined 2 years ago
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Cake day: April 13th, 2024

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  • I don’t know about you guys and your local tax laws, but I can deduct the costs of earning my income from my taxable income.

    Transportation to the job, further education for the job, (if I had any) the costs of having my kids looked after while I work, that sort of thing.

    Fundamentally very similar to how the business deducts operating cost from revenue, before paying taxes on profit.



  • Well there is no forced air. There isn’t really any variables to have anyone look at. Short of sawing a hole in a wall, door or window.

    According to this calculater:

    • 400 ppm CO₂ in air would be about 0.72 g / m³
    • 3000 ppm CO₂ in air would be about 5.40 g / m³

    The room is about 20 m³ in volume. So in total that’s 14.4 g to 108 g in a night. Ignoring any that diffuses under the door into the hallway, this would imply I breathe out 93.6 g of CO₂ in 8 h at rest.

    A common number I see online for adult humans is 1kg per day. Makes sense that a significantly higher than proportional part of that is during waking hours, so I expect quit a bit less than 300g at night. Seems pretty plausible to me all-in-all.




  • Thanks for the interesting fact, I never thought about cells being in milk. I looked up some more info, sharing for others who might be interested:

    The legal limits are 750’000 cells per milliliter in the US and 400’000 cells per milliliter in the EU. The somatic cells found in milk are mostly white blood cells, so their number is taken as an indicator of infection in the cows the milk stems from.

    Both these values are quite a bit higher than the threshold value of 200’000-300’000 cells per milliliter that are taken as a sign of mastitis in an individual cow. I don’t really see why the legal limit would be higher.

    And finally for comparison: In blood you’d expect between 4.5 million and 11 million per milliliter. For pus it seems the estimates are very wide, because it depends on how much dead tissue and bacteria is mixed in, I’m seeing 10 million to 100 million per milliliter