Tag Archives: Physics

Dark energy and repulsive gravity

Over the weekend, Sean Carroll put up a blog post to address common misconceptions about cosmology.  I understood most of his points, but was confused when I saw this one: Dark energy is not a new force; it’s a new substance. … Continue reading

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Sean Carroll on the Many Worlds Interpretation of quantum mechanics

Related to the post last week on quantum mechanics, here is a talk that got mentioned in the discussion thread.  Warning: Carroll is a passionate advocate for the Many Worlds Interpretation, so don’t expect a fair and balanced discussion.  The … Continue reading

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Do all quantum trails inevitably lead to Everett?

I’ve been thinking lately about quantum physics, a topic that seems to attract all sorts of crazy speculation and intense controversy, which seems inevitable.  Quantum mechanics challenges our deepest held most cherished beliefs about how reality works.  If you study … Continue reading

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Consciousness is composed of non-consciousness

The components of a thing are not individually the thing. For example, the components of the chair I type most of my blog posts from are not the chair itself, but the wood of the frame, the springs for the … Continue reading

Posted in Mind and AI, Philosophy, Science | Tagged , , , , , , | 63 Comments

In case you haven’t heard yet, gravitational waves have been detected

I won’t attempt to describe the implications.  For that, your best bet is to read it from one of the experts, Ethan Siegel: The First Detection Of Gravitational Waves Validates Einstein In A Whole New Way! Let’s hope those implications aren’t … Continue reading

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SMBC: What if the universe is made of math?

I loved this SMBC.  It echoes something I’ve observed before, that some physicists have disdain for philosophy, while often engaging in it themselves. Hovertext: “Philosophy is dumb, unless it comes out of the mouth of a physicist.” Click through for full … Continue reading

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Einstein, Schrodinger, and the reluctance to give up hard determinism

Ethan Siegel on his Starts With a Bang blog has an interesting review of Paul Halpern’s new book on Einstein and Schrodinger, and their refusal to allow the implications of quantum physics to dissuade them from idea that the universe … Continue reading

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Dark energy may be less energetic than previously thought

This is interesting.  Astronomers discovered dark energy, the energy causing the rate of expansion rate of the universe to speed up, by looking at large numbers of Type 1a supernovae. Type 1a supernovae are white dwarfs (collapsed stars after their … Continue reading

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SMBC: Apologies by discipline

  Click through for full sized version. via Saturday Morning Breakfast Cereal. STRICT REDUCTIONIST: Anyway, apologies are an evolutionary survival mechanism and therefore just an illusion.  

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Dark matter might cause neutron stars to collapse into black holes

ratamacue0 called my attention to this interesting article on the possibility of dark matter “eating” neutron stars: Dark matter: Devourer of stars | Ars Technica. Neutron stars are collapsed stars that have used up all of their fusion fuel.  Typically what happens … Continue reading

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