Recent content by Watari

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    Why did my glass bottle explode?

    Five days ago, I filled a glass 2L bottle about halfway with litchis, then filled the bottle with water till the end and sealed it with its cap. I was curious to see how it decomposes in there. This morning, about 1/7th of the water was lying in a puddle around the bottle. I could see gas...
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    Amino acid side chain: amino group basic and hydroxyl not?

    Hi all I don't really understand this... How come that if an amino group is attached to the amino acid side chain, like in arginine or lysine, the molecule is basic, but if an hydroxyl group is attached, like threonine, it is not basic? How come the amino group can accept a H+ and a hydroxyl...
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    How Do Orbital Interactions and Sigma Bonds Work in Methane?

    Hello all I have an exam coming up this week but there's something that I don't understand: Let's take methane, for example. If I understand it correctly, the bonding orbitals of carbon are all hybridized to sp³ orbitals and overlap with the 1s orbital of four H atoms. Does the orbital of...
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    Did I understand the double slit experiment correctly?

    Do I get this correctly: if a wave/particle is not measured, it is in the wave state, and if it is measured, it becomes a particle, fixated on an eigenstate of the probability distribution of the wave function. So the universe - matter, light, each natural phenomenon - if unmeasured, is in a...
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    Basic question about spacetime and matter

    I'm trying to understand the concepts of physics, but there's one thing I don't fully get... If there is some matter with a spatial and temporal coordinate, let's say coordinate X, is the matter "in" that time and place, or "is" the matter that time and place? In other words, does space-time...
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