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Cake day: July 5th, 2024

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  • To put some math around CO2 usage:

    The entire structure of plants is built primarily from CO2. A tomato plant and fruit grows from seeding to maturity in about 60 days, and will yield about a kilogram of dry plant mass.

    That mass will be about 20% carbon, meaning each plant would need to uptake a net 3.3 grams of carbon - 12.3 grams of CO2 per day. A person exhales around 1Kg of CO2 per day, or about as much as would be needed to supply 81 tomato plants.


  • Bit of a nitpick, we don’t know that the dark matter is pervasive throughout the universe. What we observe is that galaxies and galaxy clusters are held together too strongly to be explained by our current theory of gravity, and the motions of galaxies within clusters do not match the gravitational forces that are known to act on them from observed matter - The Milky Way for instance is spinning fast enough for the stars on the edges to be flung off into intergalactic space.

    One solution to this contradictory observation is that there is bunch of extra mass we can’t see (dark matter) that is holding the galaxies and clusters together. Every experiment designed to detect dark matter has failed, and more serious work is going into adjusting theories of gravity as a result. However no adjusted theory has arisen that can explain every observation either, so physics is a bit lost at the moment.



  • skibidi@lemmy.worldtoLemmy Shitpost@lemmy.worldWHAT IF WHAT IF
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    16 days ago

    And it is a terrible thing for science and contributes greatly to the crisis of irreproducibility plaguing multiple fields.

    If 1000 researchers study the same thing, and 950 of them find insignificant results and don’t publish, and 50 of them publish their significant (95% confidence) results - we have collectively deluded ourselves into accepting spurious conclusions.

    This is a massive problem that is rarely acknowledged and even more rarely discussed.