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Showing content with the highest reputation on 09/28/21 in all areas

  1. So I've been thinking a lot about how we can help fix and stop climate change and one thing came to mind... I remember watching a documentary about the history of earth from the start and hearing that a bacteria is what produced the air we breathed today and it is estimated that it contributes to 50-80% of that. After realizing this is a huge amount i was wondering... is it possible to genetically modify the Phytoplankton to be exact to produce more oxygen or do make them reproduce faster? if we can get them to produce faster... would this be able to stop global warming? (This would also need more trees and less carbon emissions as well). Let me know I've been super interested in this subject recently. please no hate just an idea.
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  2. While a Moon's tidal influence can dominate, the star will have a tidal influence. For example. Let's start with a planet-moon system tidally locked to each other, The star will still will still produce tidal effects that will produce drag on the Planet's rotation. If this were allowed to happen, then the Moon would orbit faster than the planet rotates. In this situation, the Moon would spiral in, transferring rotational energy to the planet, speeding up its rotation. So what happens is while the Moon does end up keeping the planet tidally locked to itself, it does so at the expense of it's own orbital energy. Both it's orbital period and the rotational period of the planet shorten. However, this can't be maintained forever, as eventually the moon would spiral inside the Roche limit and break up. How long this would take depends on the tidal influence of the star. For example, Proxima Centauri B orbits so close to its star that the stellar tidal forces on it are roughly 1000 times that of the Sun on the Earth.
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  3. Yes, this is basically the problem, along with his clarification "By the phrase "exotic matter" I mean matter that has negative energy and therefore anti-gravitates, i.e. repels." First of all, the Casimir force is attractive, not repulsive. The plates get pushed together. It also has nothing to do with gravity - the derivation of the force relies on the electric and magnetic field boundary conditions applied to the conducting plates; it's purely an electromagnetic phenomenon. You eliminate photon standing wave modes (of one polarization) because the field needs to go to zero at the boundary. The QM solution says for the vacuum, each state has an energy of hv, so there are fewer photon modes inside the plates than outside. The energy density imbalance means there is a pressure that pushes them together. In short, if the plates are a micron apart, then no photon states of 2 microns or longer can exist in between the plates (plus more that wouldn't form standing waves) but they do exist outside the plates. There's no gravity involved, and no matter identified with it, AFAICT. Maybe his point is that if the Casimir force exists maybe there's something like this for gravity, but still, the Casimir force isn't tied to exotic matter and it's attractive and it relies on there being boundary conditions for E and B fields that AFAIK don't exist for gravity, so it would be a really weak analogue for the kind of exotic matter you need for wormholes to become stable
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  4. I think this is a populist approach to the subject, and so it's flawed from the start. Bernie Sanders had it right; elect the leader that stands for what YOU stand for, one who is more interested in maintaining a movement towards the goals we share rather than doing what's popular to stay in office.
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  5. Here's the abstract and the full paper is in the link below:
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